Converting between GeoJSON and sf

D Cooley

2019-01-11

What it does

Quickly converts between GeoJSON and sf objects

What it doesn’t do

As per GeoJSON (RFC 7946 specification), foreign members are ignored, and nested objects and arrays inside the properties object are converted to string/characters.

library(geojsonsf)
# library(sf)

You would also typically load library(sf) to take advantange of its plot methods.

GeoJSON

Geometry

Geometry Collection

Some web-plotting libraries (such as googleway) can’t plot GeometryCollections directly. Therefore, you can set expand_geometries to TRUE and it will extract each geometry from a GeometryCollection and create a row for each one

Feature

Feature Collection

Vectors of GeoJSON

geo <- c(p, gc, f, fc)
sf <- geojson_sf(geo)
head(sf)
#>   id value                text                                 geometry
#> 1 NA    NA                <NA>                                     0, 0
#> 2 NA    NA                <NA> 100, 0, 101, 102, 0, 1, 0, 1, 2, 0, 1, 2
#> 3  1   100 the quick brown fox                           101, 102, 0, 1
#> 4 NA    NA                <NA>                                   100, 0
#> 5 NA    NA                <NA>                           101, 102, 0, 1
#> 6 NA    NA                <NA>                           101, 102, 0, 1
#>           foo         bar
#> 1        <NA>        <NA>
#> 2        <NA>        <NA>
#> 3        <NA>        <NA>
#> 4 feature 1.1 feature 1.2
#> 5        <NA>        <NA>
#> 6 feature 3.1 feature 3.2

JSON Arrays of GeoJSON


js <- '[
{
  "type": "FeatureCollection",
  "features": [
  {
    "type": "Feature",
    "properties": null,
    "geometry": {"type": "Point", "coordinates": [100.0, 0.0]}
  },
  {
    "type": "Feature",
    "properties": null,
    "geometry": {"type": "LineString", "coordinates": [[201.0, 0.0], [102.0, 1.0]]}
  },
  {
    "type": "Feature",
        "properties": null,
        "geometry": {"type": "LineString", "coordinates": [[301.0, 0.0], [102.0, 1.0]]}
    }
 ]
},
{
  "type": "FeatureCollection",
    "features": [
    {
      "type": "Feature",
      "properties": null,
      "geometry": {"type": "Point", "coordinates": [100.0, 0.0]}
    },
    {
      "type": "Feature",
      "properties": null,
      "geometry": {"type": "LineString", "coordinates": [[501.0, 0.0], [102.0, 1.0]]}
    },
    {
      "type": "Feature",
      "properties": null,
      "geometry": {"type": "LineString", "coordinates": [[601.0, 0.0], [102.0, 1.0]]}
    }
  ]
}
]'

sf <- geojson_sf(js)
head(sf)
#>         geometry
#> 1         100, 0
#> 2 201, 102, 0, 1
#> 3 301, 102, 0, 1
#> 4         100, 0
#> 5 501, 102, 0, 1
#> 6 601, 102, 0, 1

Reading from URL

url <- "http://eric.clst.org/assets/wiki/uploads/Stuff/gz_2010_us_050_00_500k.json"
sf <- geojson_sf(url)
head(sf)
#>           GEO_ID      NAME STATE COUNTY CENSUSAREA   LSAD
#> 1 0500000US01029  Cleburne    01    029    560.100 County
#> 2 0500000US01031    Coffee    01    031    678.972 County
#> 3 0500000US01037     Coosa    01    037    650.926 County
#> 4 0500000US01039 Covington    01    039   1030.456 County
#> 5 0500000US01041  Crenshaw    01    041    608.840 County
#> 6 0500000US01045      Dale    01    045    561.150 County
#>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          geometry
#> 1                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         -85.38872, -85.38089, -85.37945, -85.37743, -85.37640, -85.36459, -85.36184, -85.36049, -85.35740, -85.35525, -85.34405, -85.34272, -85.32379, -85.31534, -85.31499, -85.31484, -85.31409, -85.31400, -85.30444, -85.30821, -85.30925, -85.31485, -85.31603, -85.32089, -85.32486, -85.33106, -85.33828, -85.34254, -85.34492, -85.34671, -85.34996, -85.35159, -85.35449, -85.35258, -85.35257, -85.35532, -85.49746, -85.50164, -85.51731, -85.52513, -85.52751, -85.53992, -85.56376, -85.56565, -85.62339, -85.62364, -85.62784, -85.64348, -85.66722, -85.68035, -85.74098, -85.76543, -85.76531, -85.76563, -85.78124, -85.78269, -85.78274, -85.88778, -85.88768, -85.87005, -85.86931, -85.85242, -85.85189, -85.84984, -85.79685, -85.79605, -85.74412, -85.74235, -85.74220, -85.73738, -85.72452, -85.72495, -85.72367, 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#> 2                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                -86.03044, -86.00409, -85.99995, -85.98010, -85.92670, -85.90446, -85.89920, -85.87889, -85.83221, -85.78914, -85.78914, -85.78914, -85.78931, -85.78937, -85.78937, -85.79029, -85.78984, -85.78982, -85.78959, -85.78975, -85.78978, 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31.33728, 31.33691, 31.33628, 31.33008, 31.32345, 31.32027, 31.31750, 31.29760, 31.29534, 31.29418, 31.29400, 31.29355, 31.29325, 31.29178, 31.26932, 31.20985, 31.19635, 31.19637, 31.19637, 31.19637, 31.19637, 31.19634, 31.19634, 31.19612, 31.19624, 31.19596, 31.19593, 31.19578, 31.19532, 31.19408, 31.19301, 31.18389, 31.18210, 31.18206, 31.19275, 31.19269, 31.19221, 31.21136, 31.21303, 31.21959, 31.24312, 31.25017, 31.26291, 31.28353, 31.32793, 31.33681, 31.35268, 31.35336, 31.41035, 31.42543, 31.44007, 31.44659, 31.52446, 31.52995, 31.53005, 31.53020, 31.53753, 31.53760, 31.53768, 31.57099, 31.61774, 31.61804, 31.61817, 31.61840, 31.61879, 31.61894
#> 3                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        -86.00928, -86.00917, -86.00861, -86.00848, -86.00834, -86.00832, -86.00826, -86.00826, -86.00831, -86.00820, -86.00790, -86.00789, -86.00785, -86.00766, -86.00765, -86.00757, -86.00756, -86.01241, -86.01385, -86.01358, -86.00950, -86.00747, -86.00753, -86.00910, -86.01102, -86.01277, -86.01349, -86.00902, -86.00731, -86.00709, -86.00489, -86.00388, -86.00005, -86.00516, -86.00473, -86.00690, -86.00494, -86.00622, -86.00573, -86.00721, -86.00719, -86.05919, -86.13626, -86.14927, -86.15473, -86.19797, -86.20659, -86.22936, -86.23158, -86.28087, -86.29607, -86.31948, -86.31945, -86.31924, -86.31916, -86.33669, -86.33678, -86.33677, -86.37497, -86.37995, -86.38802, -86.39262, -86.39674, -86.39942, -86.40265, -86.40591, -86.40870, -86.41156, -86.41340, -86.41883, -86.42867, -86.43475, -86.44383, -86.44462, -86.44392, -86.44131, -86.44249, -86.45701, -86.45874, -86.46023, -86.46058, -86.45996, -86.45738, -86.45438, -86.44784, -86.44688, -86.44845, -86.45152, -86.45499, -86.45824, -86.46567, -86.47138, -86.47493, -86.47871, -86.48022, -86.48121, -86.48142, -86.48257, 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32.88761, 32.86403, 32.86015, 32.83150, 32.82777, 32.82796, 32.82654, 32.82583, 32.82499, 32.82510, 32.82357, 32.82293, 32.82363, 32.82135, 32.82012, 32.81312, 32.81220, 32.80224, 32.80216, 32.80111, 32.80165, 32.79852, 32.79786, 32.79643, 32.79557, 32.79497, 32.79188, 32.79154, 32.75498, 32.75488, 32.75430, 32.75409, 32.75427, 32.75402, 32.75353, 32.75345, 32.75348, 32.75343, 32.75354, 32.75370, 32.75621, 32.75836, 32.76784, 32.76813, 32.76747, 32.75378, 32.75358, 32.75523, 32.75754, 32.75991, 32.76295, 32.76812, 32.77083, 32.77298, 32.77671, 32.78310, 32.78818, 32.79098, 32.79232, 32.79843, 32.80448, 32.80566, 32.80865, 32.81049, 32.81250, 32.81390, 32.81882, 32.82753, 32.83205, 32.83704, 32.84284, 32.84671, 32.85098, 32.85401, 32.85861, 32.86369, 32.86666, 32.86833, 32.86914, 32.86979, 32.87067, 32.87266, 32.87435, 32.87716, 32.88030, 32.88392, 32.88724, 32.89256, 32.89583, 32.90562, 32.90893, 32.90996, 32.91165, 32.91222, 32.91230, 32.91328, 32.91455, 32.91773, 32.91989, 32.92230, 32.92936, 32.93557, 32.93764, 32.94318, 32.95038, 32.95331, 32.95507, 32.96246, 32.96607, 32.96884, 32.97118, 32.97343, 32.97555, 32.97792, 32.98151, 32.98538, 33.00440, 33.00666, 33.01492, 33.01832, 33.02057, 33.02318, 33.02871, 33.03052, 33.03948, 33.04222, 33.04620, 33.04969, 33.05193, 33.05460, 33.05699, 33.06057, 33.06150, 33.06440, 33.06606, 33.06775, 33.07180, 33.07784, 33.07991, 33.08588, 33.08843, 33.09090, 33.09916, 33.10294, 33.10373, 33.10383, 33.10299, 33.10302, 33.10377, 33.10431, 33.10404, 33.10410, 33.10412, 33.10430, 33.10439, 33.10439, 33.10445, 33.10460, 33.10469, 33.10469, 33.10470, 33.10469, 33.10469, 33.10466, 33.10464, 33.10164
#> 4                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    -86.34851, -86.35023, -86.36491, -86.36927, -86.37454, -86.38865, -86.39194, -86.40491, -86.45470, -86.45832, -86.49995, -86.51283, -86.51994, -86.54249, -86.56344, -86.56759, -86.62775, -86.66468, -86.67838, -86.68831, -86.68806, -86.69255, -86.70022, -86.70060, -86.70075, -86.70044, -86.70028, -86.70104, -86.70104, -86.70113, -86.70114, -86.70164, -86.69951, -86.69969, -86.70279, -86.69980, -86.69729, -86.69601, -86.69329, -86.69318, -86.69043, -86.68816, -86.68832, -86.68685, -86.68359, -86.67857, -86.68049, -86.67966, -86.68124, -86.67945, -86.67772, -86.67683, -86.67424, -86.67099, -86.66746, -86.66756, -86.66861, -86.67072, -86.66874, -86.66970, -86.67042, -86.67205, -86.67512, -86.67541, -86.67290, -86.67303, -86.67133, -86.66582, -86.66612, -86.66582, -86.66251, -86.66208, -86.66403, -86.66358, -86.66475, -86.66705, -86.66684, -86.66905, -86.66937, -86.66638, -86.66537, -86.66681, -86.67077, -86.67301, -86.67368, -86.67410, -86.67330, -86.67100, -86.67485, -86.70122, -86.70124, -86.70155, -86.69896, -86.69022, -86.68853, -86.67688, -86.67581, -86.64225, -86.52707, -86.52668, -86.50620, -86.49921, -86.48614, -86.41538, -86.39994, -86.39888, -86.39861, -86.39860, -86.39855, -86.39614, -86.39520, -86.39559, -86.39415, -86.39074, -86.38896, -86.38873, -86.38760, -86.38727, -86.38469, -86.38648, -86.38495, -86.38392, -86.37928, -86.37980, -86.37850, -86.37752, -86.37522, -86.37794, -86.37697, -86.37732, -86.37556, -86.37556, -86.37345, -86.37386, -86.37030, -86.36942, -86.37070, -86.36746, -86.36720, -86.36495, -86.36376, -86.36431, -86.36280, -86.36199, -86.35822, -86.35811, -86.35615, -86.35379, -86.34779, -86.34679, -86.34560, -86.34757, -86.34589, -86.34130, -86.34004, -86.33771, -86.33567, -86.33642, -86.33444, -86.33258, -86.33062, -86.32915, -86.33060, -86.32979, -86.32860, -86.32752, -86.32623, -86.32348, -86.32469, -86.32373, -86.32150, -86.31964, -86.31914, -86.31985, -86.31871, -86.31967, -86.31833, -86.31492, -86.31403, -86.31302, -86.31229, -86.30983, -86.30696, -86.30437, -86.30403, -86.30142, -86.30109, -86.29885, -86.29889, -86.29094, -86.28911, -86.28015, -86.27808, -86.27705, -86.27605, -86.26019, -86.26188, -86.21070, -86.19395, -86.19637, -86.19609, -86.19506, -86.19504, -86.19478, -86.19463, -86.19389, -86.19355, -86.19334, -86.19371, -86.19385, -86.19354, -86.19400, -86.19348, -86.19318, -86.19328, -86.19233, -86.19173, -86.19112, -86.19024, -86.18693, -86.18752, -86.18725, -86.23834, -86.25645, -86.27119, -86.28907, -86.28925, -86.30460, -86.33404, -86.34851, 30.99434, 30.99435, 30.99445, 30.99448, 30.99447, 30.99418, 30.99417, 30.99405, 30.99379, 30.99400, 30.99334, 30.99370, 30.99325, 30.99427, 30.99522, 30.99511, 30.99475, 30.99453, 30.99454, 30.99460, 31.00018, 31.00042, 31.00042, 31.10107, 31.12294, 31.12517, 31.19222, 31.29398, 31.29530, 31.31566, 31.32436, 31.33750, 31.34080, 31.34255, 31.34539, 31.34807, 31.34759, 31.34830, 31.34745, 31.34949, 31.34876, 31.35009, 31.35155, 31.35286, 31.35284, 31.35781, 31.35850, 31.36038, 31.36216, 31.36168, 31.36345, 31.36209, 31.36260, 31.36530, 31.36901, 31.37360, 31.37561, 31.37587, 31.37748, 31.37858, 31.38249, 31.38417, 31.38522, 31.38946, 31.38829, 31.39007, 31.39118, 31.39207, 31.39505, 31.39947, 31.40145, 31.40280, 31.40376, 31.40530, 31.40679, 31.40796, 31.41022, 31.41394, 31.41602, 31.41637, 31.41877, 31.42100, 31.42242, 31.42499, 31.42803, 31.43037, 31.43289, 31.43316, 31.43656, 31.43664, 31.46206, 31.52395, 31.52398, 31.52369, 31.52407, 31.52389, 31.52368, 31.52375, 31.52467, 31.52438, 31.52485, 31.52533, 31.52536, 31.52557, 31.52713, 31.46803, 31.45584, 31.45526, 31.45194, 31.45071, 31.45079, 31.45275, 31.45302, 31.45594, 31.45644, 31.45827, 31.45873, 31.45737, 31.45851, 31.45978, 31.46106, 31.46243, 31.46598, 31.46793, 31.46808, 31.46655, 31.46813, 31.46976, 31.47053, 31.47231, 31.47239, 31.47401, 31.47406, 31.47254, 31.47369, 31.47523, 31.47605, 31.47769, 31.48016, 31.48079, 31.48449, 31.48641, 31.48578, 31.48733, 31.48747, 31.48605, 31.48747, 31.48471, 31.48578, 31.48531, 31.48716, 31.48837, 31.49027, 31.48706, 31.48692, 31.48831, 31.49091, 31.49169, 31.49441, 31.49513, 31.49890, 31.49967, 31.50095, 31.50199, 31.50135, 31.50266, 31.50274, 31.50153, 31.50374, 31.50479, 31.50527, 31.50504, 31.50579, 31.50895, 31.50963, 31.51199, 31.51116, 31.51401, 31.51397, 31.51562, 31.51528, 31.51652, 31.51907, 31.51983, 31.52077, 31.52118, 31.52268, 31.52379, 31.52850, 31.52844, 31.52860, 31.52851, 31.51335, 31.45663, 31.45560, 31.45572, 31.44117, 31.44171, 31.44007, 31.42543, 31.41035, 31.35336, 31.35268, 31.33681, 31.32793, 31.28353, 31.26291, 31.25017, 31.24312, 31.21959, 31.21303, 31.21136, 31.19221, 31.19028, 31.12512, 31.09036, 31.06387, 31.03954, 31.00306, 31.00308, 31.00018, 30.99405, 30.99437, 30.99385, 30.99383, 30.99380, 30.99380, 30.99403, 30.99424, 30.99434
#> 5 -86.14699, -86.14711, -86.15116, -86.15105, -86.15505, -86.15776, -86.15982, -86.15984, -86.16104, -86.16131, -86.16049, -86.15831, -86.15979, -86.15893, -86.16094, -86.16115, -86.16250, -86.16173, -86.16303, -86.16562, -86.16730, -86.16577, -86.16708, -86.16788, -86.16914, -86.16971, -86.17068, -86.17029, -86.16868, -86.16907, -86.17085, -86.17296, -86.17481, -86.17532, -86.17634, -86.17759, -86.17920, -86.18006, -86.17855, -86.18035, -86.17911, -86.17967, -86.16454, -86.14589, -86.14476, -86.14395, -86.15031, -86.15677, -86.15656, -86.18210, -86.19478, -86.19472, -86.19397, -86.19395, -86.21070, -86.26188, -86.26019, -86.27605, -86.27705, -86.27808, -86.28015, -86.28911, -86.29094, -86.29889, -86.29885, -86.30109, -86.30142, -86.30403, -86.30437, -86.30696, -86.30983, -86.31229, -86.31302, -86.31403, -86.31492, -86.31833, -86.31967, -86.31871, -86.31985, -86.31914, -86.31964, -86.32150, -86.32373, -86.32469, -86.32348, -86.32623, -86.32752, -86.32860, -86.32979, -86.33060, -86.32915, -86.33062, -86.33258, -86.33444, -86.33642, -86.33567, -86.33771, -86.34004, -86.34130, -86.34589, -86.34757, -86.34560, -86.34679, -86.34779, -86.35379, -86.35615, -86.35811, -86.35822, -86.36199, -86.36280, -86.36431, -86.36376, -86.36495, -86.36720, -86.36746, -86.37070, -86.36942, -86.37030, -86.37386, -86.37345, -86.37556, -86.37556, -86.37732, -86.37697, -86.37794, -86.37522, -86.37752, -86.37850, -86.37980, -86.37928, -86.38392, -86.38495, -86.38648, -86.38469, -86.38727, -86.38760, -86.38873, -86.38896, -86.39074, -86.39415, -86.39559, -86.39520, -86.39614, -86.39855, -86.39860, -86.39861, -86.39888, -86.39994, -86.41538, -86.48614, -86.49921, -86.49935, -86.50375, -86.50395, -86.49925, -86.49943, -86.49953, -86.48555, -86.45640, -86.44863, -86.44840, -86.44598, -86.44583, -86.44609, -86.44625, -86.44235, -86.44195, -86.44194, -86.44629, -86.44640, -86.44643, -86.44643, -86.44641, -86.44228, -86.44229, -86.44230, -86.43834, -86.43836, -86.44263, -86.44278, -86.44662, -86.44740, -86.44767, -86.44778, -86.44751, -86.44803, -86.44811, -86.44820, -86.41423, -86.40501, -86.40605, -86.39636, -86.39651, -86.40616, -86.40628, -86.35490, -86.34524, -86.30362, -86.30351, -86.30263, -86.30253, -86.30227, -86.30222, -86.28430, -86.25332, -86.22954, -86.19138, -86.18570, -86.18463, -86.18176, -86.18201, -86.18002, -86.17913, -86.17980, -86.17765, -86.17553, -86.17763, -86.17505, -86.17548, -86.17519, -86.17602, -86.17563, -86.17395, -86.17440, -86.17309, -86.17328, -86.17505, -86.17736, -86.17688, -86.17814, -86.17739, -86.17964, -86.17881, -86.17941, -86.17965, -86.18231, -86.18056, -86.17986, -86.18027, -86.18185, -86.18289, -86.18178, -86.18299, -86.18292, -86.18394, -86.18423, -86.18352, -86.18492, -86.18618, -86.18303, -86.18388, -86.18576, -86.18824, -86.19049, -86.19360, -86.19320, -86.19406, -86.19288, -86.19376, -86.19546, -86.19578, -86.19941, -86.19938, -86.16122, -86.14834, -86.14738, -86.14731, -86.14707, -86.14699, 31.68045, 31.66300, 31.66248, 31.66172, 31.66157, 31.66023, 31.66043, 31.65758, 31.65577, 31.65319, 31.65109, 31.65142, 31.64985, 31.64782, 31.64506, 31.64343, 31.64324, 31.64131, 31.64068, 31.64116, 31.64077, 31.63928, 31.63841, 31.63974, 31.63931, 31.63729, 31.63726, 31.63552, 31.63481, 31.63332, 31.63399, 31.63130, 31.63162, 31.62920, 31.62971, 31.62820, 31.62774, 31.62511, 31.62317, 31.62203, 31.61727, 31.61641, 31.61745, 31.61774, 31.57099, 31.53768, 31.53760, 31.53753, 31.53020, 31.53005, 31.52995, 31.52446, 31.44659, 31.44007, 31.44171, 31.44117, 31.45572, 31.45560, 31.45663, 31.51335, 31.52851, 31.52860, 31.52844, 31.52850, 31.52379, 31.52268, 31.52118, 31.52077, 31.51983, 31.51907, 31.51652, 31.51528, 31.51562, 31.51397, 31.51401, 31.51116, 31.51199, 31.50963, 31.50895, 31.50579, 31.50504, 31.50527, 31.50479, 31.50374, 31.50153, 31.50274, 31.50266, 31.50135, 31.50199, 31.50095, 31.49967, 31.49890, 31.49513, 31.49441, 31.49169, 31.49091, 31.48831, 31.48692, 31.48706, 31.49027, 31.48837, 31.48716, 31.48531, 31.48578, 31.48471, 31.48747, 31.48605, 31.48747, 31.48733, 31.48578, 31.48641, 31.48449, 31.48079, 31.48016, 31.47769, 31.47605, 31.47523, 31.47369, 31.47254, 31.47406, 31.47401, 31.47239, 31.47231, 31.47053, 31.46976, 31.46813, 31.46655, 31.46808, 31.46793, 31.46598, 31.46243, 31.46106, 31.45978, 31.45851, 31.45737, 31.45873, 31.45827, 31.45644, 31.45594, 31.45302, 31.45275, 31.45079, 31.45071, 31.45194, 31.45526, 31.45584, 31.46803, 31.52713, 31.52557, 31.52536, 31.52533, 31.55393, 31.55404, 31.56870, 31.56848, 31.62630, 31.65525, 31.65531, 31.65555, 31.65562, 31.68406, 31.70116, 31.71163, 31.74856, 31.75941, 31.75932, 31.75971, 31.77420, 31.77417, 31.81808, 31.83061, 31.83075, 31.83166, 31.83168, 31.83299, 31.83554, 31.83554, 31.84284, 31.84286, 31.84641, 31.84643, 31.86479, 31.87050, 31.87295, 31.87515, 31.96179, 31.96369, 31.96463, 31.96484, 31.96377, 32.03682, 32.03699, 32.04397, 32.04380, 32.05073, 32.05122, 32.05138, 32.05166, 32.05031, 32.03714, 32.01609, 31.96829, 31.96506, 31.96539, 31.96599, 31.96628, 31.96645, 31.96204, 31.95707, 31.94915, 31.94420, 31.94200, 31.93897, 31.93595, 31.93409, 31.93127, 31.92545, 31.91833, 31.91487, 31.90660, 31.90482, 31.90090, 31.89937, 31.89687, 31.89314, 31.89115, 31.88755, 31.88657, 31.88363, 31.88253, 31.88118, 31.87832, 31.87562, 31.87392, 31.87253, 31.87029, 31.86972, 31.86679, 31.86549, 31.86580, 31.86434, 31.86245, 31.86122, 31.85752, 31.85371, 31.85083, 31.84648, 31.84369, 31.83743, 31.83244, 31.83000, 31.82865, 31.82397, 31.82250, 31.81893, 31.81478, 31.81345, 31.81237, 31.81134, 31.81130, 31.80935, 31.80786, 31.79045, 31.79082, 31.79095, 31.77673, 31.71528, 31.68548, 31.68045
#> 6                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           -85.79043, -85.79033, -85.79012, -85.79010, -85.79006, -85.79006, -85.78997, -85.79000, -85.78987, -85.78978, -85.78975, -85.78959, -85.78982, -85.78984, -85.79029, -85.78937, -85.78937, -85.78931, -85.78914, -85.78914, -85.78914, -85.76787, -85.76542, -85.74825, -85.74810, -85.74704, -85.73048, -85.72867, -85.70492, -85.69632, -85.69097, -85.63648, -85.62791, -85.58151, -85.56311, -85.51873, -85.49996, -85.41644, -85.41602, -85.41543, -85.41534, -85.41577, -85.41758, -85.41804, -85.41773, -85.41768, -85.41729, -85.41656, -85.41671, -85.41710, -85.41754, -85.41751, -85.41746, -85.41737, -85.41743, -85.41743, -85.41753, -85.41772, -85.41725, -85.41714, -85.41706, -85.41830, -85.42623, -85.43051, -85.43503, -85.44742, -85.46026, -85.46581, -85.46723, -85.46804, -85.46813, -85.46822, -85.46841, -85.47697, -85.48544, -85.48570, -85.48579, -85.48581, -85.48578, -85.48576, -85.48579, -85.48578, -85.48567, -85.48575, -85.48577, -85.48585, -85.49039, -85.49331, -85.49464, -85.49684, -85.50141, -85.50305, -85.50379, -85.50743, -85.50776, -85.50888, -85.51454, -85.51584, -85.52016, -85.52454, -85.52632, -85.53056, -85.53238, -85.53414, -85.53952, -85.54457, -85.54918, -85.55086, -85.55171, -85.55310, -85.55401, -85.55678, -85.55907, -85.56017, -85.56294, -85.56500, -85.56785, -85.57009, -85.57569, -85.58553, -85.58724, -85.58962, -85.58948, -85.59234, -85.59439, -85.59466, -85.59567, -85.59935, -85.60296, -85.60890, -85.60960, -85.61440, -85.61707, -85.61987, -85.62168, -85.62227, -85.62493, -85.62576, -85.62680, -85.62909, -85.63075, -85.63312, -85.63600, -85.64019, -85.64443, -85.64643, -85.64985, -85.65148, -85.65243, -85.65494, -85.65732, -85.65999, -85.66289, -85.66612, -85.66684, -85.66868, -85.67131, -85.67124, -85.67511, -85.67114, -85.67973, -85.68418, -85.68802, -85.68903, -85.68914, -85.68754, -85.69036, -85.68930, -85.68983, -85.69378, -85.69394, -85.69191, -85.69170, -85.69394, -85.69428, -85.69236, -85.69335, -85.69503, -85.69500, -85.69692, -85.69666, -85.69839, -85.69948, -85.70090, -85.70058, -85.70620, -85.70615, -85.70673, -85.70934, -85.71244, -85.71087, -85.79140, -85.79129, -85.79131, -85.79136, -85.79122, -85.79121, -85.79125, -85.79124, -85.79117, -85.79109, -85.79053, -85.79043, 31.32027, 31.32345, 31.33008, 31.33628, 31.33691, 31.33728, 31.34152, 31.34286, 31.35057, 31.35656, 31.35889, 31.37270, 31.38314, 31.38547, 31.43147, 31.48743, 31.48756, 31.49093, 31.54062, 31.58787, 31.61796, 31.61794, 31.61793, 31.61805, 31.61806, 31.61806, 31.61824, 31.61805, 31.61807, 31.61796, 31.61790, 31.61775, 31.61772, 31.61763, 31.61802, 31.61953, 31.62027, 31.61947, 31.56089, 31.53647, 31.50017, 31.49041, 31.45043, 31.44077, 31.42313, 31.41974, 31.40054, 31.37353, 31.36335, 31.33729, 31.33535, 31.32953, 31.32574, 31.32195, 31.31511, 31.31497, 31.31160, 31.30084, 31.28974, 31.28722, 31.28619, 31.28627, 31.28627, 31.28636, 31.28645, 31.28659, 31.28668, 31.28682, 31.28687, 31.28678, 31.28677, 31.28686, 31.28687, 31.28707, 31.28710, 31.27437, 31.25890, 31.25849, 31.25790, 31.25735, 31.25668, 31.25627, 31.25275, 31.25162, 31.25012, 31.24610, 31.24560, 31.24637, 31.24634, 31.24706, 31.24624, 31.24630, 31.24638, 31.24913, 31.24938, 31.25017, 31.25148, 31.25226, 31.25217, 31.25341, 31.25214, 31.25210, 31.25137, 31.25306, 31.25304, 31.25352, 31.25563, 31.25568, 31.25715, 31.25687, 31.25806, 31.25866, 31.26035, 31.25996, 31.26122, 31.26319, 31.26214, 31.26238, 31.26452, 31.26418, 31.26564, 31.26590, 31.26693, 31.26755, 31.26899, 31.27002, 31.26963, 31.27025, 31.27238, 31.27187, 31.27322, 31.27334, 31.27281, 31.27434, 31.27324, 31.27423, 31.27373, 31.27452, 31.27333, 31.27381, 31.27274, 31.27356, 31.27558, 31.27322, 31.27221, 31.27322, 31.27233, 31.27272, 31.27180, 31.27196, 31.27038, 31.27089, 31.26903, 31.26732, 31.26308, 31.26202, 31.25834, 31.25744, 31.25556, 31.25017, 31.23808, 31.23700, 31.23680, 31.23622, 31.23251, 31.22877, 31.22582, 31.22234, 31.22124, 31.22000, 31.21840, 31.21702, 31.21345, 31.21370, 31.21290, 31.21191, 31.20992, 31.21037, 31.20806, 31.20717, 31.20472, 31.20416, 31.20524, 31.20439, 31.20153, 31.20190, 31.19772, 31.19713, 31.19846, 31.19688, 31.19518, 31.19635, 31.20985, 31.26932, 31.29178, 31.29325, 31.29355, 31.29400, 31.29418, 31.29534, 31.29760, 31.31750, 31.32027

Reading from file

sf <- geojson_sf(system.file("examples", "geo_melbourne.geojson", package = "geojsonsf"))
head(sf)
#>                 SA2_NAME polygonId strokeColor           SA3_NAME AREASQKM
#> 1             Abbotsford        70     #440154              Yarra   1.7405
#> 2            Albert Park        59     #450457       Port Phillip   4.6747
#> 3 Alphington - Fairfield        41     #46075A    Darebin - South   2.8853
#> 4               Armadale        66     #460A5D Stonnington - West   2.1835
#> 5             Ascot Vale        44     #460C5F           Essendon   3.8361
#> 6              Brunswick        36     #472D7B Brunswick - Coburg   5.1425
#>   fillColor strokeWeight
#> 1   #440154            1
#> 2   #450457            1
#> 3   #46075A            1
#> 4   #460A5D            1
#> 5   #460C5F            1
#> 6   #472D7B            1
#>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   geometry
#> 1                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 144.99252, 144.99265, 144.99268, 144.99269, 144.99275, 144.99283, 144.99286, 144.99294, 144.99298, 144.99309, 144.99319, 144.99324, 144.99330, 144.99342, 144.99359, 144.99388, 144.99406, 144.99434, 144.99446, 144.99483, 144.99492, 144.99500, 144.99507, 144.99536, 144.99548, 144.99548, 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#> 2                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     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#> 4                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     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#> 5                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           144.89941, 144.89977, 144.90060, 144.90094, 144.90250, 144.90359, 144.90408, 144.90520, 144.90663, 144.90749, 144.90802, 144.90884, 144.90915, 144.91005, 144.91029, 144.91066, 144.91113, 144.91142, 144.91252, 144.91368, 144.91481, 144.91502, 144.91548, 144.91617, 144.91673, 144.91809, 144.91835, 144.91956, 144.92064, 144.92192, 144.92316, 144.92392, 144.92526, 144.92632, 144.92644, 144.92693, 144.92688, 144.92726, 144.92743, 144.92764, 144.93025, 144.93033, 144.93199, 144.93208, 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#> 6                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              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sf to GeoJSON

geo <- sf_geojson(sf)
substr(geo, 1, 80)
#> {"type":"FeatureCollection","features":[{"type":"Feature","properties":{"SA2_NAM

Atomising

Sometimes it’s useful to convert each row of an sf object into it’s own GeoJSON object, for example when you want to keep each geometry separate in a database. Set atomise = TRUE to return a vector of GeoJSON

now geo is a vector of GeoJSON

Well-known Text

It also converts GeoJSON to Well-Known Text and returns a data.frame

fc <- '{
  "type": "FeatureCollection",
  "features": [
  {
    "type": "Feature",
    "properties": {"foo" : "feature 1.1", "bar" : "feature 1.2"},
    "geometry": {"type": "Point", "coordinates": [100.0, 0.0]}
  },
  {
    "type": "Feature",
    "properties": null,
    "geometry": {"type": "LineString", "coordinates": [[101.0, 0.0], [102.0, 1.0]]}
  },
  {
    "type": "Feature",
        "properties": {"foo" : "feature 3.1", "bar" : "feature 3.2"},
        "geometry": {"type": "LineString", "coordinates": [[101.0, 0.0], [102.0, 1.0]]}
    }
 ]
}'
df <- geojson_wkt(fc)
head(df)
#>           foo         bar                 geometry
#> 1 feature 1.1 feature 1.2            POINT (100 0)
#> 2        <NA>        <NA> LINESTRING (101 0,102 1)
#> 3 feature 3.1 feature 3.2 LINESTRING (101 0,102 1)