multilinestring class
Examples
x <- '{ "type": "MultiLineString",
"coordinates": [ [ [100.0, 0.0], [101.0, 1.0] ], [ [102.0, 2.0], [103.0, 3.0] ] ] }'
(y <- multilinestring(x))
#> <MultiLineString>
#> no. lines: 2
#> no. nodes / line: 2, 2
#> coordinates: [[[100,0],[101,1]],[[102,2],[103,3]]]
y[1]
#> [1] "{ \"type\": \"MultiLineString\",\n \"coordinates\": [ [ [100.0, 0.0], [101.0, 1.0] ], [ [102.0, 2.0], [103.0, 3.0] ] ] }"
geo_type(y)
#> [1] "MultiLineString"
geo_pretty(y)
#> {
#> "type": "MultiLineString",
#> "coordinates": [
#> [
#> [
#> 100.0,
#> 0.0
#> ],
#> [
#> 101.0,
#> 1.0
#> ]
#> ],
#> [
#> [
#> 102.0,
#> 2.0
#> ],
#> [
#> 103.0,
#> 3.0
#> ]
#> ]
#> ]
#> }
#>
geo_write(y, f <- tempfile(fileext = ".geojson"))
jsonlite::fromJSON(f, FALSE)
#> $type
#> [1] "MultiLineString"
#>
#> $coordinates
#> $coordinates[[1]]
#> $coordinates[[1]][[1]]
#> $coordinates[[1]][[1]][[1]]
#> [1] 100
#>
#> $coordinates[[1]][[1]][[2]]
#> [1] 0
#>
#>
#> $coordinates[[1]][[2]]
#> $coordinates[[1]][[2]][[1]]
#> [1] 101
#>
#> $coordinates[[1]][[2]][[2]]
#> [1] 1
#>
#>
#>
#> $coordinates[[2]]
#> $coordinates[[2]][[1]]
#> $coordinates[[2]][[1]][[1]]
#> [1] 102
#>
#> $coordinates[[2]][[1]][[2]]
#> [1] 2
#>
#>
#> $coordinates[[2]][[2]]
#> $coordinates[[2]][[2]][[1]]
#> [1] 103
#>
#> $coordinates[[2]][[2]][[2]]
#> [1] 3
#>
#>
#>
#>
unlink(f)
file <- system.file("examples", 'multilinestring_one.geojson',
package = "geojson")
con <- file(file)
str <- paste0(readLines(con), collapse = " ")
(y <- multilinestring(str))
#> <MultiLineString>
#> no. lines: 2
#> no. nodes / line: 80, 20
#> coordinates: [[[-80.51399230957031,28.069556808283608],[-80.51193237304688,28.05743 ...
y[1]
#> [1] "{\"type\":\"MultiLineString\",\"coordinates\":[[[-80.51399230957031,28.069556808283608],[-80.51193237304688,28.057438520876673],[-80.49819946289062,28.05622661698537],[-80.5023193359375,28.04471284867091],[-80.48583984375,28.042288740362853],[-80.50575256347656,28.028349057505775],[-80.50163269042969,28.02168161433489],[-80.49476623535156,28.021075462659883],[-80.48652648925781,28.021075462659883],[-80.47691345214844,28.021075462659883],[-80.46936035156249,28.015619944017807],[-80.47760009765624,28.007133032319448],[-80.49201965332031,27.998039170620494],[-80.46730041503906,27.962262536875905],[-80.46524047851562,27.91980029694533],[-80.40550231933594,27.930114089618602],[-80.39657592773438,27.980455528671527],[-80.41305541992188,27.982274659104082],[-80.42953491210938,27.990763528690582],[-80.4144287109375,28.00955793247135],[-80.3594970703125,27.972572275562527],[-80.36224365234375,27.948919060105453],[-80.38215637207031,27.913732900444284],[-80.41786193847656,27.881570017022806],[-80.40550231933594,27.860932192608534],[-80.39382934570312,27.85425440786446],[-80.37803649902344,27.86336037597851],[-80.38215637207031,27.880963078302393],[-80.36842346191405,27.888246118437756],[-80.35743713378906,27.882176952341734],[-80.35469055175781,27.86882358965466],[-80.3594970703125,27.8421119273228],[-80.37940979003906,27.83300417483936],[-80.39932250976561,27.82511017099003],[-80.40069580078125,27.79352841586229],[-80.36155700683594,27.786846483587688],[-80.35537719726562,27.794743268514615],[-80.36705017089844,27.800209937418252],[-80.36889553070068,27.801918215058347],[-80.3690242767334,27.803930152059845],[-80.36713600158691,27.805942051806845],[-80.36584854125977,27.805524490772143],[-80.36563396453857,27.80465140342285],[-80.36619186401367,27.803095012921272],[-80.36623477935791,27.801842292177923],[-80.36524772644043,27.80127286888392],[-80.36224365234375,27.801158983867033],[-80.36065578460693,27.802639479776524],[-80.36138534545898,27.803740348273823],[-80.36220073699951,27.804803245204976],[-80.36190032958984,27.806625330038287],[-80.3609561920166,27.80742248254359],[-80.35932540893555,27.806853088493792],[-80.35889625549315,27.806321651354835],[-80.35902500152588,27.805448570411585],[-80.35863876342773,27.804461600896783],[-80.35739421844482,27.804461600896783],[-80.35700798034668,27.805334689771293],[-80.35696506500244,27.80673920932572],[-80.35726547241211,27.80772615814989],[-80.35808086395264,27.808295547623707],[-80.3585958480835,27.80928248230861],[-80.35653591156006,27.80943431761813],[-80.35572052001953,27.808637179875486],[-80.3555917739868,27.80772615814989],[-80.3555917739868,27.806055931810487],[-80.35572052001953,27.803778309057556],[-80.35537719726562,27.801804330717825],[-80.3554630279541,27.799564581098746],[-80.35670757293701,27.799564581098746],[-80.35499095916748,27.796831264786892],[-80.34610748291016,27.79478123244122],[-80.34404754638672,27.802070060660014],[-80.34748077392578,27.804955086774896],[-80.3433609008789,27.805790211616266],[-80.34353256225586,27.8101555324401],[-80.33499240875244,27.810079615315917],[-80.33383369445801,27.805676331334084],[-80.33022880554199,27.801652484744796],[-80.32872676849365,27.80848534345178]],[[-80.51193237304688,28.091366281406945],[-80.47760009765624,28.074403740607135],[-80.47210693359375,28.058650411105386],[-80.46936035156249,28.01016414897993],[-80.45425415039061,27.99682659773872],[-80.44464111328125,28.02956127552927],[-80.43228149414062,28.024712321517228],[-80.40069580078125,28.01743848094423],[-80.3704833984375,28.004101830368654],[-80.35537719726562,27.991976169784156],[-80.3485107421875,27.947099367319762],[-80.32379150390625,27.937393821330247],[-80.34027099609375,27.879142241732627],[-80.35263061523436,27.90948552034696],[-80.36773681640625,27.858503954841247],[-80.34027099609375,27.822073862795612],[-80.29220581054688,27.853647316127383],[-80.30319213867188,27.860932192608534],[-80.30319213867188,27.88278388425912],[-80.2935791015625,27.894921808206057]]]}"
geo_type(y)
#> [1] "MultiLineString"
geo_pretty(y)
#> {
#> "type": "MultiLineString",
#> "coordinates": [
#> [
#> [
#> -80.51399230957031,
#> 28.069556808283608
#> ],
#> [
#> -80.51193237304688,
#> 28.057438520876673
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#> [
#> -80.49819946289062,
#> 28.05622661698537
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#> [
#> -80.5023193359375,
#> 28.04471284867091
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#> [
#> -80.48583984375,
#> 28.042288740362853
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#> -80.50575256347656,
#> 28.028349057505775
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#> -80.50163269042969,
#> 28.02168161433489
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#> 28.021075462659883
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#> }
#>
close(con)
# add to a data.frame
library('tibble')
tibble(a = 1:5, b = list(y))
#> # A tibble: 5 × 2
#> a b
#> <int> <list>
#> 1 1 <gmltlnst [1]>
#> 2 2 <gmltlnst [1]>
#> 3 3 <gmltlnst [1]>
#> 4 4 <gmltlnst [1]>
#> 5 5 <gmltlnst [1]>