Problem converting Turf Feature to GeoJSON? #124

FezVrasta · 2023-10-28T11:56:42Z

Hi, I have this code:

    func jsonToString(geoJSON: GeoJSONObject) -> String? {
      
        do {
            let encoder = JSONEncoder()
            let data = try encoder.encode(geoJSON)
            
            if let jsonString = String(data: data, encoding: .utf8) {
               return jsonString
            }
        } catch {
            // Handle error
        }
        return nil
        
    }
    
    func getMapImageUrl(bulletin: ContextualBulletin?, bw: Bool) -> UIImage? {
        if bulletin == nil {
            return nil
        }
        
        let publicationTime = bulletin!.data.publicationTime
        let region = bulletin!.data.bulletinID
        
        let accessToken = "my token"
        
        let size: CGSize
        switch (family) {
        case .systemSmall: size = CGSize(width: 626 / 2, height: 313 / 2)
        case .systemMedium: size = CGSize(width: 1242 / 2, height: 936 / 2)
        case .systemLarge: size = CGSize(width: 2478 / 2, height: 1404 / 2)
        default: fatalError("not supported")
        }
        
        let regionIDs = bulletin!.data.regions.map { $0.regionID }

        let options = SnapshotOptions(
            styleURL: URL(string: "mapbox://styles/fezvrasta/clnlphb2q004901qyexsybaqo")!,
            size: size
        )
        
        let firstRegion = regionIDs.first!
        let dangerRating = bulletin!.data.dangerRatings.first!
        if let elevation = dangerRating.elevation,  let feature = getFeatureByRegionIdAndElevation(
           regionID: firstRegion,
           elevation: elevation
        ) {
            
            let geoJSONString = jsonToString(geoJSON: feature.geoJSONObject)
            let geoJSONOverlay = GeoJSON(objectString: geoJSONString!)
            
            options.overlays.append(geoJSONOverlay)
            
        }
        let snapshot = Snapshot(
            options: options,
            accessToken: accessToken)
        
        if let image = snapshot.image {
            return image
        } else {
            print("no image")
            return nil
        }
    }

But I'm always ending in the no image branch.

The same geo jsons are working fine on the iOS Mapbox SDK v11

Am I doing something wrong? The stringified json looks correct to me:

{"properties":{"elevation line_visualization":1900,"threshold":3200,"elevation":"high","id":"IT-32-TN-02"},"type":"Feature","geometry":{"coordinates":[[[[10.66419272879387,46.09254566028145],[10.664147159156835,46.09222861163446],[10.662934992546054,46.09148446384751],[10.660225443651095,46.09069069506981],[10.655875904635925,46.090343417614356],[10.650670718600935,46.090194583745195],[10.644253365955521,46.08954963230871],[10.63690906237206,46.08811086713693],[10.632345611601783,46.08706897912315],[10.626997817730457,46.08567976429429],[10.623789141407663,46.084687446429825],[10.62214915128715,46.08379434499154],[10.621863935613995,46.08270275680525],[10.622220455205378,46.081611146881],[10.623290013979702,46.080817235100604],[10.624858700181987,46.08027141408196],[10.627069121648747,46.07937824069255],[10.629707366625295,46.07754222747073],[10.631204748909292,46.07530915555134],[10.632345611601846,46.07253009459116],[10.633700386049204,46.07069385203942],[10.635839503597856,46.06965163296825],[10.638335140737766,46.06915533121076],[10.640046434776568,46.068956809249926],[10.642542071916541,46.06920496158833],[10.646107267830779,46.06989978216276],[10.64824638537931,46.07039607718304],[10.65088463035586,46.07039607718304],[10.653166355740968,46.0698501524136],[10.655091561534693,46.069254591921464],[10.657658502593014,46.06771603071471],[10.66051065932431,46.06553219231259],[10.661152394588903,46.0643409710791],[10.661152394588903,46.062851908156574],[10.661081090670677,46.06121389225289],[10.660938482833977,46.0593276315313],[10.660938482833977,46.05763986959369],[10.660581963242597,46.05585277094919],[10.660581963242597,46.05391668172877],[10.660938482833977,46.05183158616722],[10.661936737690015,46.050441478442174],[10.664075855238545,46.04880309198696],[10.666714100215156,46.04641989709941],[10.668924521681976,46.04418555790558],[10.670778423557415,46.04195112775623],[10.671634070576694,46.040511113464675],[10.672061894086546,46.039170376546814],[10.67177667841327,46.03812755852823],[10.670635815720837,46.03708472070125],[10.669067129518432,46.03663778414018],[10.668068874662517,46.03658812429771],[10.665858453195638,46.0369854017798],[10.662863688627704,46.03792892427871],[10.660225443651155,46.03902140375689],[10.657658502593014,46.04070973837128],[10.656018512472382,46.04160354155812],[10.654164610596883,46.042695947912165],[10.651882885211776,46.04373867915222],[10.650100287254629,46.04438416951693],[10.646749003095314,46.04537721679452],[10.645037709056632,46.04592338513879],[10.64261337583489,46.04681710343409],[10.640902081795907,46.048058354701304],[10.63954730734861,46.04929957789619],[10.636481238862329,46.05113653670627],[10.633914297804068,46.052476981355326],[10.629778670543523,46.053519526777905],[10.625785651119616,46.0541152581261],[10.620010033738497,46.0541152581261],[10.614091808520863,46.05381739326059],[10.609100534240918,46.05421454605546],[10.603253612941572,46.05485991321616],[10.601328407147966,46.05485991321616],[10.60025884837364,46.054661339513636],[10.5994032013543,46.05391668172877],[10.598975377844509,46.052576272248736],[10.599189289599375,46.05103724320754],[10.600330152291928,46.048902389528315],[10.602255358085596,46.04661850062617],[10.604750995225627,46.045178608776254],[10.608601406812959,46.04398694557543],[10.611239651789509,46.04284491073054],[10.613022249746718,46.04135526435489],[10.615232671213477,46.03847516673511],[10.616658749579123,46.03594254225818],[10.617443092680357,46.0335091263417],[10.617229180925492,46.032168218425305],[10.616587445660835,46.031125267407525],[10.614377024193956,46.02968496915147],[10.61195269097233,46.02889030566756],[10.608387495058153,46.02859230389647],[10.601756230657635,46.02898963923182],[10.598690162171478,46.029039305946526],[10.595267574093693,46.028691637999856],[10.593057152626875,46.027648620953656],[10.591916289934321,46.026506246222446],[10.591356239676134,46.02494574168533],[10.590822963187254,46.02344324019019],[10.590751659269085,46.02200274046375],[10.59096557102389,46.01976740747891],[10.59103687494212,46.017730691568744],[10.590751659269085,46.01614100717441],[10.590181227922658,46.01470031596145],[10.589111669148453,46.0128621378444],[10.58804211037413,46.01112326410924],[10.58804211037413,46.00983149371391],[10.588469933883857,46.00839063706573],[10.589610796576471,46.00709880243612],[10.591179482778637,46.00625412491448],[10.593247296408997,46.00570756195336],[10.595101198284373,46.00570756195336],[10.597169011914737,46.006154750234884],[10.598880305953477,46.00665162183595],[10.600734207828795,46.006800682440335],[10.603087237132312,46.00670130874892],[10.6057254821088,46.006154750235005],[10.609076766268174,46.00526037003347],[10.611144579898419,46.004962240065375],[10.613497609201813,46.00511130525155],[10.61577933458692,46.0059063127499],[10.617775844298874,46.00709880243612],[10.620414089275604,46.00883780351639],[10.622339295069212,46.01027864844112],[10.624335804781106,46.01122262980509],[10.626474922329757,46.011818820206365]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It's 713 coordinate points

I also tried with a Gist using your example but I get the same problem:

let geoJSONOverlay: GeoJSON

do {
  let geoJSONURL = URL(string: "https://gist.githubusercontent.com/FezVrasta/e587d59b09d1b5920aa391224d8664ba/raw/b403f06c73ee139cf27ed0aa463603ceb73158a5/gistfile1.txt")!
  let geoJSONString = try String(contentsOf: geoJSONURL, encoding: .utf8)
  geoJSONOverlay = GeoJSON(objectString: geoJSONString)
                
  options.overlays.append(geoJSONOverlay)
}

It happens even with a version with way less points:
https://gist.githubusercontent.com/FezVrasta/5816d4d519ee147836ec0da2aeb0467a/raw/8d40f4776fb0f82a3c91a52adafbbf2f9306034e/gistfile1.txt

I also tried a feature collection and setting the stroke, stroke-width, stroke-opacity, fill properties, but still it errors:

{"features":[{"type":"Feature","geometry":{"type":"Polygon","coordinates":[[[10.66419272879387,46.09254566028145],[10.664147159156835,46.09222861163446],[10.662934992546054,46.09148446384751],[10.660225443651095,46.09069069506981],[10.655875904635925,46.090343417614356],[10.650670718600935,46.090194583745195],[10.644253365955521,46.08954963230871],[10.63690906237206,46.08811086713693],[10.632345611601783,46.08706897912315],[10.626997817730457,46.08567976429429],[10.623789141407663,46.084687446429825],[10.62214915128715,46.08379434499154]]]},"properties":{"stroke-opacity":1,"stroke-width":3,"stroke":"#00f","fill": "#00f"}}],"type":"FeatureCollection"}

I only managed to make work a LineString, but I really need a MultiPolygon...

{"features":[{"type":"Feature","geometry":{"type":"LineString","coordinates":[[10.66419272879387,46.09254566028145],[10.664147159156835,46.09222861163446],[10.662934992546054,46.09148446384751],[10.660225443651095,46.09069069506981],[10.655875904635925,46.090343417614356]]},"properties":{"stroke-opacity":1,"stroke-width":3,"stroke":"#00f","fill": "#00f"}}],"type":"FeatureCollection"}

The text was updated successfully, but these errors were encountered:

FezVrasta · 2023-10-28T15:53:13Z

This file passes all the geojson.io checks but it still does not render.

https://gist.github.com/FezVrasta/b46b2ef5b7d1bd3581306c0399fbe05b

FezVrasta · 2023-10-29T07:27:57Z

So, this doesn't render:

{
  "features": [
    {
      "geometry": {
        "type": "MultiPolygon",
        "coordinates": [
          [
            [
              [
                10.684980781555069,
                47.17077699734051
              ],
              [
                10.68312687967963,
                47.17082562180113
              ],
              [
                10.680702546458006,
                47.171311863944304
              ],
              [
                10.677921693644882,
                47.1716522307793
              ],
              [
                10.675568664341425,
                47.17145773571382
              ],
              [
                10.673786066384334,
                47.1710687434326
              ],
              [
                10.67186086059061,
                47.17043662486137
              ],
              [
                10.670719997897995,
                47.169464119969724
              ],
              [
                10.669793046960367,
                47.16800532903708
              ],
              [
                10.669436527368985,
                47.165573921227875
              ],
              [
                10.669507831287213,
                47.163482820945845
              ],
              [
                10.66922261561406,
                47.16090530431487
              ],
              [
                10.66786784116664,
                47.15832766185489
              ],
              [
                10.664157104413695,
                47.155707717383834
              ],
              [
                10.663803517824384,
                47.15545806281091
              ],
              [
                10.663779462335798,
                47.15544712348457
              ],
              [
                10.66048210458708,
                47.153947615867125
              ],
              [
                10.658669635707922,
                47.15312335872262
              ],
              [
                10.655817478976505,
                47.15258830783271
              ],
              [
                10.65218097914398,
                47.15234510109101
              ],
              [
                10.64697579310917,
                47.152782872419884
              ],
              [
                10.642554950175532,
                47.15263694904667
              ],
              [
                10.63556716618363,
                47.151712758321295
              ],
              [
                10.630504587985397,
                47.15044805006996
              ],
              [
                10.627723735172271,
                47.149086022702555
              ],
              [
                10.62608374505182,
                47.14752937699218
              ],
              [
                10.625085490195781,
                47.14645915645694
              ],
              [
                10.624871578440917,
                47.14558350534678
              ],
              [
                10.625156794114071,
                47.14417270358431
              ],
              [
                10.626725480316294,
                47.14339431407119
              ],
              [
                10.627509823417467,
                47.14324836476077
              ],
              [
                10.630148068393956,
                47.14310241504707
              ],
              [
                10.634497607409365,
                47.14397810728122
              ],
              [
                10.635930658529801,
                47.14409450485197
              ],
              [
                10.640487136545348,
                47.14446459669514
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                10.661684901938559,
                46.98592843758383
              ],
              [
                10.660187519654443,
                46.98505012898338
              ],
              [
                10.65769188251441,
                46.98456217348627
              ],
              [
                10.654768421864826,
                46.98490374280494
              ],
              [
                10.649777147584881,
                46.98583084845636
              ],
              [
                10.644001530203825,
                46.98670914414913
              ],
              [
                10.64065024604433,
                46.98670914414913
              ],
              [
                10.638439824577572,
                46.986172409617886
              ],
              [
                10.636799834457,
                46.985001333635445
              ],
              [
                10.636086795274297,
                46.98358624904662
              ],
              [
                10.636585922702253,
                46.98212232877295
              ],
              [
                10.638439824577572,
                46.97987757267659
              ],
              [
                10.63893895200559,
                46.978413550215386
              ],
              [
                10.637940697149551,
                46.97724230320345
              ],
              [
                10.636229403110752,
                46.97636385100273
              ],
              [
                10.633020726788017,
                46.975338971748265
              ],
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                10.62710250157032,
                46.974558098097155
              ],
              [
                10.623537305656024,
                46.97382601862856
              ],
              [
                10.620685148924728,
                46.97260586377107
              ],
              [
                10.619330374477311,
                46.971190449041984
              ],
              [
                10.618546031376138,
                46.96874999029948
              ],
              [
                10.618902550967519,
                46.9670904143504
              ],
              [
                10.620328629333226,
                46.96504027840896
              ],
              [
                10.622039923372087,
                46.96294124779594
              ],
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                10.622824266473259,
                46.960890951842366
              ],
              [
                10.622539050800167,
                46.958938215521826
              ],
              [
                10.620827756761244,
                46.95605779854636
              ],
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                10.619187766640733,
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                10.616264305991152,
                46.9529331020168
              ],
              [
                10.613839972769345,
                46.95229837560049
              ],
              [
                10.609775649427087,
                46.95161481560381
              ],
              [
                10.607280012287237,
                46.95073593984188
              ],
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                10.605996541758046,
                46.949417598969106
              ],
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                10.605996541758046,
                46.94765976030909
              ],
              [
                10.606852188777385,
                46.946146019358345
              ],
              [
                10.608920002407688,
                46.94497406129676
              ],
              [
                10.613198237504811,
                46.944046242854284
              ],
              [
                10.616977345173972,
                46.942581233420654
              ],
              [
                10.618546031376138,
                46.94072549689181
              ],
              [
                10.618807468890866,
                46.93971082270557
              ],
              [
                10.623191601495742,
                46.93971082270557
              ],
              [
                10.63518326506732,
                46.935615314157836
              ],
              [
                10.637519390340042,
                46.93572283390954
              ],
              [
                10.644582776981215,
                46.936047925028035
              ],
              [
                10.648355732507452,
                46.93430626456141
              ],
              [
                10.65141606915012,
                46.932893561096456
              ],
              [
                10.651416081665433,
                46.93289356270387
              ],
              [
                10.65679675507177,
                46.933584638847506
              ],
              [
                10.663300053615789,
                46.93441988932499
              ],
              [
                10.66330005553097,
                46.93441988957097
              ],
              [
                10.663300055530971,
                46.93441988957097
              ],
              [
                10.663300055530982,
                46.93441988957097
              ],
              [
                10.670281897529724,
                46.93045134448573
              ],
              [
                10.690239077378012,
                46.929109667882294
              ],
              [
                10.703500323742155,
                46.9231271688194
              ],
              [
                10.708461956795723,
                46.92486140613026
              ],
              [
                10.71484684645777,
                46.92709311366652
              ],
              [
                10.714846923825043,
                46.92709311692663
              ]
            ]
          ]
        ]
      },
      "type": "Feature",
      "properties": {
        "end_date": null,
        "stroke-opacity": 1,
        "start_date": "2022-10-01",
        "elevation line_visualization": 2000,
        "id": "AT-07-14-01",
        "elevation": "high",
        "threshold": 3200,
        "stroke": "#00f",
        "stroke-width": 3
      }
    }
  ],
  "type": "FeatureCollection"
}

But if I only leave the first polygon in it, it renders:

{
  "features": [
    {
      "geometry": {
        "type": "MultiPolygon",
        "coordinates": [
          [
            [
              [
                10.684980781555069,
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              ],
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                10.677921693644882,
                47.1716522307793
              ],
              [
                10.675568664341425,
                47.17145773571382
              ],
              [
                10.673786066384334,
                47.1710687434326
              ],
              [
                10.67186086059061,
                47.17043662486137
              ],
              [
                10.670719997897995,
                47.169464119969724
              ],
              [
                10.669793046960367,
                47.16800532903708
              ],
              [
                10.669436527368985,
                47.165573921227875
              ],
              [
                10.669507831287213,
                47.163482820945845
              ],
              [
                10.66922261561406,
                47.16090530431487
              ],
              [
                10.66786784116664,
                47.15832766185489
              ],
              [
                10.664157104413695,
                47.155707717383834
              ],
              [
                10.663803517824384,
                47.15545806281091
              ],
              [
                10.663779462335798,
                47.15544712348457
              ],
              [
                10.66048210458708,
                47.153947615867125
              ],
              [
                10.658669635707922,
                47.15312335872262
              ],
              [
                10.655817478976505,
                47.15258830783271
              ],
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                10.65218097914398,
                47.15234510109101
              ],
              [
                10.64697579310917,
                47.152782872419884
              ],
              [
                10.642554950175532,
                47.15263694904667
              ],
              [
                10.63556716618363,
                47.151712758321295
              ],
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                10.630504587985397,
                47.15044805006996
              ],
              [
                10.627723735172271,
                47.149086022702555
              ],
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                10.62608374505182,
                47.14752937699218
              ],
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                10.624871578440917,
                47.14558350534678
              ],
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                10.625156794114071,
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              ],
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                10.626725480316294,
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                10.650968812533199,
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                10.652965322245093,
                47.13940488781972
              ],
              [
                10.653892273182842,
                47.13838315703817
              ],
              [
                10.655175743712032,
                47.13775064713015
              ],
              [
                10.657172253423866,
                47.13750737207268
              ],
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                10.660167017991919,
                47.137653337241645
              ],
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                10.663375694314775,
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              ],
              [
                10.66786784116664,
                47.139745460356586
              ],
              [
                10.67186086059061,
                47.141059076722776
              ],
              [
                10.67442780164893,
                47.14237266043135
              ],
              [
                10.677636477971728,
                47.1443186503414
              ],
              [
                10.680916458212751,
                47.14694562302446
              ],
              [
                10.684105552224057,
                47.15033965220244
              ],
              [
                10.68448165412699,
                47.150739908508086
              ],
              [
                10.685329731326245,
                47.15199031080673
              ],
              [
                10.686283581385553,
                47.15339662890117
              ],
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                10.68669207559387,
                47.15399888485055
              ],
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                10.687032064460523,
                47.15475263006547
              ],
              [
                10.68840336963273,
                47.157792663689676
              ],
              [
                10.69061379109949,
                47.16192659954044
              ],
              [
                10.692039869465257,
                47.16484447704792
              ],
              [
                10.692111173383484,
                47.16708140726157
              ],
              [
                10.69182595771039,
                47.168831982182034
              ],
              [
                10.690899006772762,
                47.1698044987199
              ],
              [
                10.689544232325225,
                47.17077699734039
              ],
              [
                10.687690330449847,
                47.17097149491432
              ],
              [
                10.684980781555069,
                47.17077699734051
              ]
            ]
          ]
        ]
      },
      "type": "Feature",
      "properties": {
        "end_date": null,
        "stroke-opacity": 1,
        "start_date": "2022-10-01",
        "elevation line_visualization": 2000,
        "id": "AT-07-14-01",
        "elevation": "high",
        "threshold": 3200,
        "stroke": "#00f",
        "stroke-width": 3
      }
    }
  ],
  "type": "FeatureCollection"
}

Both pass the geojson.io checks though.

I also tried to split the feature in many single-polygon ones but I have the same problem:

{
  "features": [
    {
      "properties": {
        "stroke-opacity": 1,
        "end_date": null,
        "stroke-width": 3,
        "elevation": "high",
        "id": "AT-07-14-01",
        "threshold": 3200,
        "start_date": "2022-10-01",
        "stroke": "#00f",
        "elevation line_visualization": 2000
      },
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              10.684980781555069,
              47.17077699734051
            ],
            [
              10.68312687967963,
              47.17082562180113
            ],
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              10.680702546458006,
              47.171311863944304
            ],
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              10.677921693644882,
              47.1716522307793
            ],
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              10.675568664341425,
              47.17145773571382
            ],
            [
              10.673786066384334,
              47.1710687434326
            ],
            [
              10.67186086059061,
              47.17043662486137
            ],
            [
              10.670719997897995,
              47.169464119969724
            ],
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              10.669793046960367,
              47.16800532903708
            ],
            [
              10.669436527368985,
              47.165573921227875
            ],
            [
              10.669507831287213,
              47.163482820945845
            ],
            [
              10.66922261561406,
              47.16090530431487
            ],
            [
              10.66786784116664,
              47.15832766185489
            ],
            [
              10.664157104413695,
              47.155707717383834
            ],
            [
              10.663803517824384,
              47.15545806281091
            ],
            [
              10.663779462335798,
              47.15544712348457
            ],
            [
              10.66048210458708,
              47.153947615867125
            ],
            [
              10.658669635707922,
              47.15312335872262
            ],
            [
              10.655817478976505,
              47.15258830783271
            ],
            [
              10.65218097914398,
              47.15234510109101
            ],
            [
              10.64697579310917,
              47.152782872419884
            ],
            [
              10.642554950175532,
              47.15263694904667
            ],
            [
              10.63556716618363,
              47.151712758321295
            ],
            [
              10.630504587985397,
              47.15044805006996
            ],
            [
              10.627723735172271,
              47.149086022702555
            ],
            [
              10.62608374505182,
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            ],
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            ],
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            ],
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            ],
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            [
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            ],
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              10.652965322245093,
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            ],
            [
              10.653892273182842,
              47.13838315703817
            ],
            [
              10.655175743712032,
              47.13775064713015
            ],
            [
              10.657172253423866,
              47.13750737207268
            ],
            [
              10.660167017991919,
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            ],
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              10.663375694314775,
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            ],
            [
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            ],
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              10.67186086059061,
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            ],
            [
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              47.14237266043135
            ],
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              10.677636477971728,
              47.1443186503414
            ],
            [
              10.680916458212751,
              47.14694562302446
            ],
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              10.684105552224057,
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            ],
            [
              10.68448165412699,
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              10.685329731326245,
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            ],
            [
              10.686283581385553,
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            ],
            [
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            ],
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              10.687032064460523,
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              47.157792663689676
            ],
            [
              10.69061379109949,
              47.16192659954044
            ],
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              10.692039869465257,
              47.16484447704792
            ],
            [
              10.692111173383484,
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            ],
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              10.69182595771039,
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            ],
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            ],
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            ],
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            ],
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              10.684980781555069,
              47.17077699734051
            ]
          ]
        ]
      },
      "type": "Feature"
    },
    {
      "properties": {
        "elevation": "high",
        "id": "AT-07-14-01",
        "stroke": "#00f",
        "threshold": 3200,
        "stroke-width": 3,
        "stroke-opacity": 1,
        "end_date": null,
        "start_date": "2022-10-01",
        "elevation line_visualization": 2000
      },
      "geometry": {
        "type": "Polygon",
        "coordinates": [
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            ],
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              10.829035198153072,
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              47.057315586933704
            ],
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              10.8260404335849,
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            [
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Problem converting Turf Feature to GeoJSON? #124

Problem converting Turf Feature to GeoJSON? #124

FezVrasta commented Oct 28, 2023 •

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FezVrasta commented Oct 28, 2023

FezVrasta commented Oct 29, 2023 •

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Problem converting Turf Feature to GeoJSON? #124

Problem converting Turf Feature to GeoJSON? #124

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FezVrasta commented Oct 28, 2023 • edited Loading

FezVrasta commented Oct 28, 2023

FezVrasta commented Oct 29, 2023 • edited Loading

FezVrasta commented Oct 28, 2023 •

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FezVrasta commented Oct 29, 2023 •

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