-1

I have downloaded some ArcGIS data from here:

ArcGIS Data

and there is an explanation of the schema here:

ArcGIS Data Documentation

How do I convert the values in the array to lat/long? i.e.

Here's a snippet of the array:

"geometry":{"rings":[[[-9261296,4866613],[-9261240,4866160],[-9260975,4866191],[-9260945,4865884], ...]]}

Can you point me to a Python library that does this transformation?

closed as too broad by Vince, PolyGeo May 23 at 22:14

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • 2
    GeoJSON is a geographic coordinate system format, so you need to do 2 before 1. We have a One question per Question policy, so please Edit the question to focus on your effort at reprojection. – Vince May 23 at 21:50
  • 1
    You had tags for ArcGIS Desktop, ArcPy, Mapbox and GeoPandas but do not appear to be using any of them in the code that you have presented, so I am removing them and adding a Python tag in their place. – PolyGeo May 23 at 22:10
  • Please include a tiny sample of the data that you are using as formatted text within your question. Not all potential answerers will follow links to find it. – PolyGeo May 23 at 22:12
  • Thank you - I've edited the question to make it more specific. I've left the original links in place just as a reference. – vgoklani May 23 at 22:34
  • Take a look at this answer: gis.stackexchange.com/questions/13029/… You should be able to to it by using ogr2ogr (part of GDAL) if you don't have access to ESRI software. Add the parameter -t_srs "EPSG:4326" to the command in that answer to get the converted coordinates. – PhilippNagel May 24 at 13:50
1

ArcGIS REST Services can do the re-projection for you:

use:

http://maps.franklincountyauditor.com/fcaags/rest/services/BOEL/ElectionResults/MapServer/0/query?f=json&spatialRel=esriSpatialRelIntersects&maxAllowableOffset=38&geometry=%7B%22xmin%22%3A-9275174.760250824%2C%22ymin%22%3A4872401.931030698%2C%22xmax%22%3A-9255606.881009845%2C%22ymax%22%3A4891969.810271677%2C%22spatialReference%22%3A%7B%22wkid%22%3A102100%7D%7D&geometryType=esriGeometryEnvelope&inSR=102100&outFields=*&outSR=4326

The results will be like:

    {
"displayFieldName": "NAME",
"fieldAliases": {
"OBJECTID": "OBJECTID",
"PRECINCTID": "Precinct ID",
"NAME": "Precinct Name",
"COUNTY": "County",
"ESS_PRECINCT_NO": "ESS_PRECINCT_NO",
"ESS_PRECINCT": "ESS_PRECINCT",
"CITY_OR_VILLAGE": "CITY_OR_VILLAGE",
"SCHOOL_DISTRICT": "SCHOOL_DISTRICT",
"TOWNSHIP": "TOWNSHIP",
"HOUSE_DISTRICT": "HOUSE_DISTRICT",
"SENATE_DISTRICT": "SENATE_DISTRICT",
"CONGRESS_DISTRICT": "CONGRESS_DISTRICT",
"POLICE_DISTRICT": "POLICE_DISTRICT",
"ROAD_DISTRICT": "ROAD_DISTRICT",
"FIRE_DISTRICT": "FIRE_DISTRICT",
"PARK_DISTRICT": "PARK_DISTRICT",
"COURT_APPEALS_NAME": "COURT_APPEALS_NAME",
"BOARD_OF_ED_NAME": "BOARD_OF_ED_NAME",
"LIBRARY": "LIBRARY",
"EDUCATIONAL_SERVICE_CENTERS": "EDUCATIONAL_SERVICE_CENTERS",
"CAREER_CENTERS": "CAREER_CENTERS",
"WINNINGPARTY": "Winning Party",
"TOTALBALLOTS": "Total Ballots",
"SHAPE_Length": "SHAPE_Length",
"SHAPE_Area": "SHAPE_Area",
"POLLINGID": "POLLINGID",
"POLLINGLOCATION": "POLLINGLOCATION",
"LID": "LID",
"Symbol": "Symbol"
},
"geometryType": "esriGeometryPolygon",
"spatialReference": {
"wkid": 4326,
"latestWkid": 4326
},
"fields": [
{
"name": "OBJECTID",
"type": "esriFieldTypeOID",
"alias": "OBJECTID"
},
{
"name": "PRECINCTID",
"type": "esriFieldTypeString",
"alias": "Precinct ID",
"length": 10
},
{
"name": "NAME",
"type": "esriFieldTypeString",
"alias": "Precinct Name",
"length": 50
},
{
"name": "COUNTY",
"type": "esriFieldTypeString",
"alias": "County",
"length": 50
},
{
"name": "ESS_PRECINCT_NO",
"type": "esriFieldTypeString",
"alias": "ESS_PRECINCT_NO",
"length": 255
},
{
"name": "ESS_PRECINCT",
"type": "esriFieldTypeString",
"alias": "ESS_PRECINCT",
"length": 255
},
{
"name": "CITY_OR_VILLAGE",
"type": "esriFieldTypeString",
"alias": "CITY_OR_VILLAGE",
"length": 255
},
{
"name": "SCHOOL_DISTRICT",
"type": "esriFieldTypeString",
"alias": "SCHOOL_DISTRICT",
"length": 255
},
{
"name": "TOWNSHIP",
"type": "esriFieldTypeString",
"alias": "TOWNSHIP",
"length": 255
},
{
"name": "HOUSE_DISTRICT",
"type": "esriFieldTypeString",
"alias": "HOUSE_DISTRICT",
"length": 255
},
{
"name": "SENATE_DISTRICT",
"type": "esriFieldTypeString",
"alias": "SENATE_DISTRICT",
"length": 255
},
{
"name": "CONGRESS_DISTRICT",
"type": "esriFieldTypeString",
"alias": "CONGRESS_DISTRICT",
"length": 255
},
{
"name": "POLICE_DISTRICT",
"type": "esriFieldTypeString",
"alias": "POLICE_DISTRICT",
"length": 255
},
{
"name": "ROAD_DISTRICT",
"type": "esriFieldTypeString",
"alias": "ROAD_DISTRICT",
"length": 255
},
{
"name": "FIRE_DISTRICT",
"type": "esriFieldTypeString",
"alias": "FIRE_DISTRICT",
"length": 255
},
{
"name": "PARK_DISTRICT",
"type": "esriFieldTypeString",
"alias": "PARK_DISTRICT",
"length": 255
},
{
"name": "COURT_APPEALS_NAME",
"type": "esriFieldTypeString",
"alias": "COURT_APPEALS_NAME",
"length": 255
},
{
"name": "BOARD_OF_ED_NAME",
"type": "esriFieldTypeString",
"alias": "BOARD_OF_ED_NAME",
"length": 255
},
{
"name": "LIBRARY",
"type": "esriFieldTypeString",
"alias": "LIBRARY",
"length": 255
},
{
"name": "EDUCATIONAL_SERVICE_CENTERS",
"type": "esriFieldTypeString",
"alias": "EDUCATIONAL_SERVICE_CENTERS",
"length": 255
},
{
"name": "CAREER_CENTERS",
"type": "esriFieldTypeString",
"alias": "CAREER_CENTERS",
"length": 255
},
{
"name": "WINNINGPARTY",
"type": "esriFieldTypeString",
"alias": "Winning Party",
"length": 75
},
{
"name": "TOTALBALLOTS",
"type": "esriFieldTypeDouble",
"alias": "Total Ballots"
},
{
"name": "SHAPE_Length",
"type": "esriFieldTypeDouble",
"alias": "SHAPE_Length"
},
{
"name": "SHAPE_Area",
"type": "esriFieldTypeDouble",
"alias": "SHAPE_Area"
},
{
"name": "POLLINGID",
"type": "esriFieldTypeString",
"alias": "POLLINGID",
"length": 15
},
{
"name": "POLLINGLOCATION",
"type": "esriFieldTypeString",
"alias": "POLLINGLOCATION",
"length": 255
},
{
"name": "LID",
"type": "esriFieldTypeString",
"alias": "LID",
"length": 5
},
{
"name": "Symbol",
"type": "esriFieldTypeString",
"alias": "Symbol",
"length": 1
}
],
"features": [
{
"attributes": {
"OBJECTID": 2298,
"PRECINCTID": "01069A",
"NAME": "COLUMBUS 69-A",
"COUNTY": null,
"ESS_PRECINCT_NO": null,
"ESS_PRECINCT": null,
"CITY_OR_VILLAGE": null,
"SCHOOL_DISTRICT": null,
"TOWNSHIP": null,
"HOUSE_DISTRICT": null,
"SENATE_DISTRICT": null,
"CONGRESS_DISTRICT": null,
"POLICE_DISTRICT": null,
"ROAD_DISTRICT": null,
"FIRE_DISTRICT": null,
"PARK_DISTRICT": null,
"COURT_APPEALS_NAME": null,
"BOARD_OF_ED_NAME": null,
"LIBRARY": null,
"EDUCATIONAL_SERVICE_CENTERS": null,
"CAREER_CENTERS": null,
"WINNINGPARTY": null,
"TOTALBALLOTS": null,
"SHAPE_Length": 26042.304427102423,
"SHAPE_Area": 14032780.421679573,
"POLLINGID": null,
"POLLINGLOCATION": null,
"LID": "6002",
"Symbol": "A"
},
"geometry": {
"rings": [
[
[
-83,
40
],
[
-83,
40
],
[
-83,
40
],
[
-83,
40
]
]
]
}
},
  • Thanks for the link - but why do the rings have the same lat/longs -> -83, 40? The entire array is just showing [-83, 40]? Is this a bug? All the precision is also lost in the response. – vgoklani May 23 at 22:38
  • mostly likely your geometry is need to be in decimal degrees to intersect – Mapperz May 24 at 14:55

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