Questions tagged [geojson]
GeoJSON is a geospatial data interchange format based on JavaScript Object Notation (JSON)
2,544
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Finding if Long-Lat coordinate falls under a specific region in ArcGIS Online map [closed]
I am very new to this.
I am working with this map: Poverty & Disadvantaged Census Tracts
I have a collection of longitude and latitude coordinates and I am trying to check if they intersect one of ...
- 11
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H3 Hexagon Geometry join on MSA Geometry
I have a pandas DataFrame with h3 hex ids and corresponding Polygon geometries and a geojson file with Texas Metro Area Geometries.
I'd like to join the H3 hex ID to Metro area and identify which ...
- 453
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Geometry extraction from osm.pbf file using relation id with ogr2ogr
What works
If I need a GeoJSON file with the OpenStreetMap borders of Liechtenstein, I download liechtenstein-latest.osm.pbf from GeoFabrik:
curl https://download.geofabrik.de/europe/liechtenstein-...
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Displaying outline of municipalities where wind turbines are located
With this query, I get the outline of the department of Yonne in France and the points representing the wind turbines.
I would also like to obtain the outline of the municipalities where the wind ...
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How receive one-piece polygon from OSM Relation with overpass API
How I can receive Polygon one-piece from OSM using Overpass API. When I used simple query like a:
[out:json];
rel['ISO3166-1'='PL'];
out geom;
I got on map polygon of country Poland, but when I ...
- 21
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41
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Clipping a raster with a multipolygon using rasterio in Python
I'm trying to write a function to clip rasters by a multi-polygon shapefile or GeoJSON in Python using rasterio.
So far, I found a good article that I've implemented, but it doesn't seem to work on ...
- 201
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36
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Get GeoJSON files hosted on AWS S3 to work in Leaflet inside JavaScript
Is there a way to call an AWS GeoJSON file from leaflet and not get CORS errors? I took the advice of putting "var Flight =" at the beginning of a GeoJSON file and saving it as JavaScript. ...
- 828
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Error while importing shapefile data using LayerMapping in GeoDjango
I am facing an issue while importing shapefile data using LayerMapping in GeoDjango. I have defined a model Province with two fields - province_name and province_shapefile. The province_shapefile ...
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29
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Projection Transformation from ArcGIS Pro to GeoJSON
I have a dataset with points in a layer viewable in ArcGIS Pro where all points are correctly placed on the map. When I export the attribute table to Excel, the data looks like this:
Year
Country
...
- 101
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84
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Extracting elements plotted on OpenStreetMap canvas
I found a very nice website with eclipse maps, which example can be found here:
http://ytliu.epizy.com/eclipse/solar_eclipse_interactiveMap.html?ybeg=2001&ind=55&dT=69.49500924568443&k2=...
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Geotools GeoJSONWriter setEncodeFeatureCollectionCRS not giving any output
I have a very simple Test Class where I try to parse a simple Shapefile (just a few points) to a GeoJson.
public class ShapefileToGeoJSON {
public static void test() throws IOException {
/...
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41
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Export attribute data with GeoJSON in QGIS
I'm trying to create .geojson files that contain basic tracks and waypoints to be used in Leaflet.
I am able to export .geojson file from QGIS and display it on a Leaflet map. However, the exported ...
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How to apply the Four Colour theorem on GeoJSON feature collection with Leaflet
Imagine you have a GeoJSON feature collection of adjacent colored polygons presented in a Leaflet map; in the present case the parishes of the city of Lisbon
fetch('https://geoapi.pt/municipio/lisboa/...
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LayerSwitcher from OpenLayers doesn't appear
I have 3 layers, which 2 layers are from 2 geojson and 1 layer is OpenStreetMap basemap. 2 layers consider of BusRoutes (have 21 classes from "nama" field) and BusStops (have five classes ...
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Add extra info to the GeoJSON `features` from a Folium choropleth map with multiple feature groups
When I make a single Folium choropleth map, I often add data from my data DF to the GeoJSON data, so it can be displayed with the folium.GeoJsonTooltip().
My code looks like this:
map_data_lookup = ...
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Folium Choropleth Maps -- when do I need "geojson" parameter b/f .add_to(map)
Normally, when I create a choropleth map with Folium, at the end of the folium.Choropleth() call, I just .add_to(map):
folium.Choropleth().add_to(m)
I've been trying to create a map with multiple ...
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Folium choropleth maps in layers lose scale - how to fix?
How can I get the scale/legend to display?
I can get Folium to produce choropleth maps individually; they always include the scale and legend.
I've also figured out how to get them grouped into ...
- 11
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14
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Sentinel2 Level2A Tile Coordinates are wrong, only simple box, doesn't represent no-data shape
For some Sentinel2 L2A tiles, the geometry/coordinate meta data is a simple box and doesn't describe the actual bounds of the tile, for example tile ...
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60
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Use data from JSON file with Leaflet GeoJSON marker
I have a JSON file that I am fetching from and I would like to use the 'LAT' and 'LON' attribute to place markers. The problem is I am unable to see any markers appear. I think it's because the file ...
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33
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Adding Pop-up feature in OpenLayers WebGIS
I have some problems with popups in OpenLayers, where the popup didn't show up. I'm using Geojson for 2 vector layers, and I want only to show the column "Route, Ramp, and Canopy" for the ...
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63
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Adding names or labels to the Voronoi polygons obtained from shapely.voronoi_polygons
I currently have a dataset in CSV format with around a thousand points, each has a name, latitude and longitude, I'm using those make some Voronoi polygons which in turn I'll later plot on a folium ...
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18
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gdal2tiles finding unexpected state either way this GeoJSON is formatted [closed]
I am using gdal2tiles with a GeoJSON file to process. It is giving the following errors when trying to process the file below :
ERROR 1: At line 29, character 16: Unexpected state: ',' or ']'
...
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35
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Why do I get array of features after click on one feature in OpenLayers?
There is a geojson:
{
"features": [
{
"id": "f6105acf-065e-499b-b23d-85298dd84108",
"geometry": {
"coordinates": [
...
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74
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Transfer GeoJSON data to a MySQL database
I want to transfer my GeoJSON data to a MySQL database. I know that MySQL somehow supports GeoJSON but I do not really understand how that works.
That was my try:
SET @point_o_from_geoJSON := ...
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34
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Converting Geojson with utm values to latlon (To display in Cesium)
I have a GeoJson with coordinate fields which seem to be in UTM:
[3840346.36141685, 3270002.87814633]
My final goal is to be able to load them correctly using Cesium.
To do that, it seems I need to ...
- 21
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96
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PHP library to get center of the polygon center
I have the folloging example GeoJSON data stored in a PostgreSQL PostGIS database:
{"geoJSON":{"type":"Feature","properties":[],"geometry":{"type&...
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27
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OpenLayer's VectorSource only adding first feature of array
I'm working on an angular implementation of OpenLayers:
the component receives a Map instance and a Feature[] observable. The component attaches the Map instance to the view and after doing so, it ...
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1
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23
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Extracting vector attributes and inserting them into Pop-ups in OpenLayers
I am slowly getting to grips with OpenLayers v4.6.5 - I have pop-ups which pop-up - but now I'm attempting to get information into the pop-ups.
Here is the code I am using - I have vector items on my ...
5
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109
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Unable to remove GeoJSON features/layer in Leaflet
I am able to select a decal and display the GeoJSON on the map. Once I select another decal from the select dropdown it shows the new GeoJSON shape but doesn't remove the old ones. I've tried multiple ...
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92
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Convert ESRI JS Graphic geometry into WKT format
I am drawing an object on map and retrieving it's geometry using following code:
this.draw = new SketchViewModel({
layer: this.drawLayer,
view: this.view
});
this.draw.on("create", function(...
- 447
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41
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Create layer from an array of geometries in OpenLayers?
After a fetch from a PostgreSQL view, I get a response and extract the geometries in an array of object result.
.then(rep => rep.json())
.then(tableauObjOpe => {
for (const ope of ...
- 1,164
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39
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ogr2ogr SQLite and json_each, filtering using WHERE does not work
using ogr2ogr I want to process a geojson file that has a JSON field (see minimal file below).
I tried the following command to extract the description corresponding to group a from the JSON field:
...
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1
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64
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Get GeoJSON feature from a promise response in OpenLayers?
Openlayers 6.3.5
I am using an APIRest and a promise to request a PostgreSQL database :
const test = fetch(`http://...`)
.then(rep => rep.json())
.then(ope => {
//ope in GeoJSON ...
- 1,164
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28
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Does MultiPolygon support Altitude?
I have a GeoJSON of type MultiPolygon that includes altitudes. When loading it with Earth Engine (ee.FeatureCollection), I receive an error, that the Geometry is invalid. The underlying code suggests ...
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247
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Shapely import and to_geojson()
I am attempting to convert a shapely LineString to GeoJSON.
According to the Shapely documentation, there is a method called shapely.to_geojson() which should be able to do this.
However, when I try ...
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74
views
Crossing lines when displaying multilinestring from GeoJSON in Leaflet
I'm stuck with something simple. I'm trying to draw a multilinestring from a GeoJSON file in a Leaflet map.
I've taken the GeoJSON data from an application (built with OpenLayers + GeoServer), which ...
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How To Iterate Over Features, Create GeoJSON Object, And Download Stringified GeoJSON [duplicate]
I have a bit of confusion regarding my previous post (Convert HMTL Maps to GeoJSON/JSON data)
I'm here to ask how to iterate and download geojson from it. HTML code is as follows : https://pastebin....
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Is it possible to convert GML to GeoJSON [duplicate]
This is an example generated by GeoServer.
<wfs:FeatureCollection xmlns="http://www.opengis.net/wfs" xmlns:wfs="http://www.opengis.net/wfs" xmlns:gml="http://www.opengis....
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Convert HMTL Maps to GeoJSON/JSON data
I have an HTML file here, but I don't know how to extract the coordinate data into a GeoJSON or shapefile. Is there a quick way to get it? Link : https://codeshare.io/DZEwnO
...
function myMap() {
....
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161
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Getting GeoJSON data from Google Map lines
Can I get the GeoJSON data from this Subway line on Google Maps?
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250
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Add a fill pattern to feature style instead of a fill color on a certain condition in Leaflet
As a continuation to Hatch polygons in Leaflet
I'm using Vue and Quasar but I would love to see any type of example. What I have is
statestyleCDC(feature) {
return {
fillColor: this....
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48
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Translate GeoJSON tile coordinates to X,Y coordinates on canvas 500 by 500
I have GeoJSON vector tile which I want to render to HTML canvas 500 by 500. How can I translate the lat, lon coordinates of a line string to X,Y points on the canvas?
{
"type": "...
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Extracting inner rings of polygon creates falsy geojson
This is a follow up question to this question.
I created a JSFiddle with various input geometries, which can be found here
What I basically need is turf's mask to work with any number of interior and ...
- 3,288
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173
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Visualize uber h3 hexagon in Power BI
I have two columns. One is h3 index and other is quantifying column. I have converted each hexagon into WKT. I am not sure how I can display hexagons over a map in Power BI.
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Inserting polygon as GeoJSON in PostGIS with only boundry coordinates
I am trying to insert GeoJSON polygon features into a PostGIS DB. The input coordinate points are only the left-top corner and the bottom right corner. I have tried to use the ST_MakeEnvelope, but it ...
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146
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Expose list of GeoJSON through REST API in a Java Spring Boot project
We need to expose APIs which would list uploaded GeoJSONS at S3 bucket for a particular user.
I plan to take below steps
Storing all GeoJSONs to S3 bucket
As USER logs in
Read his GeoJSONs from S3 ...
- 133
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27
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PyQGIS - importing features selected by location from online GeoJSON file
There is a large GeoJSON file stored online with thousands of geometries and I have created and stored a simple polygon .shp file that is the area of interest.
Is there a way to use PyQGIS to import ...
- 504
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108
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How to add GeoJSON file to Leaflet map
I am new to JavaScript, HTML, and Leaflet. I would like to add a polygon to my Leaflet map.
Here is where I store the file. I want to use this file and don't want to add thousands of coordinates to my ...
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144
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How to use Turf mask when Polygon has islands in inner rings/inner rings
I am getting some weird result with turf.mask().
This is the polygon I am trying to run the mask() function with: https://gist.githubusercontent.com/Stophface/50155878441205412001247878f58b63/raw/...
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92
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Problem with displaying GeoJSON in EPSG:3575 projection in Leaflet
In the EPSG:3575 projection in the Leaflet, all settings are identical, but GeoJSONs are displayed differently for different rasters.
For rasters, the difference is only in the size of the tiles.
The ...
