Questions tagged [geojson]
GeoJSON is a geospatial data interchange format based on JavaScript Object Notation (JSON)
1,708
questions
2
votes
0answers
13 views
How to convert an OSM relation to a list of lat/lng points?
I would like a convert a relation (e.g. https://openstreetmap.org/relation/2851613) to a list of coordinates that can be displayed on a map, potentially using geojson. I ported over this converter ...
0
votes
0answers
22 views
GeoJSON doesn't display on GeoServer [on hold]
I wish to add TMS/WFS source into my frontend. But I had a problem with rendering layer in OpenLayers. So I have found that GeoJSON of my caching layer doesn't display in the OpenLayers viewer on ...
0
votes
0answers
22 views
Show points (layer) from PostgreSQL database on OpenLayers map
I have this code, I want to load a collection of points stored in a table in PostgreSQL database, I retreive the GeoJSON format succesfully, but the points never show up on the map!
The three files ...
0
votes
0answers
18 views
GeoJSON from react-leaflet doesn't render the layer over the map [duplicate]
I have a GeoServer running on my localhost also I have a react app which consumes a WFS service to get a GeoJSON data to render as a layer over the map.
These are my dependencies on my package.json
"...
0
votes
0answers
22 views
Transforming Alaska and Hawaii to be next to USA with TurfJS?
I'm working on an app that contains a map; right now, the map just includes the Continental US, but it would be great if Alaska and Hawaii could be included as well.
So far, I've found shapefiles ...
1
vote
1answer
15 views
Adding data from KML/shapefile/GeoJSON to OSM nodes
I have data of streets which is marked with the osm way/node ids. I would like to add speed limit data which is available in KML, shapefile, or GeoJSON to these OSM wayids (OSM wayid with start node ...
0
votes
0answers
10 views
showing GeoJSON result on googlemap [duplicate]
I want to get some point (in Geometry type) from my sql database with AJAX and show them on googlemap
my table name is location_flat which has a column named position conatained my geometry points.
...
2
votes
1answer
67 views
Import more than one GeoJSON into Leaflet map?
I've searched far and wide and tried a number of different options but I cannot get more than one GeoJSON into my Leaflet web app. I can get one, and once I try anything else, the map itself will go ...
0
votes
1answer
38 views
Showing GeoJSON result on Google Maps [closed]
I have some points result query in MySQL database which is GeoJSON and I want to show these points on a Google map. I need to get this result with AJAX and deliver them to Google Maps. Can anybody ...
1
vote
1answer
38 views
Transform HTML area to GeoJSON
I have this file http://www.meteofrance.com/mf3-rpc-portlet/js/datas/zones_AVDEPT73.json where the "zone" field is put in an area HTML element (so does "shape").
I have a little script that takes the ...
0
votes
0answers
24 views
GeoJSON matching, changing color and zooming element in OpenLayers?
I'm trying to look for matching in the geosynthe loadloaded on openlayers when a user clicks on a button in that table then the button sends the element id and I want to color it in another color and ...
2
votes
0answers
51 views
Converting GeoJSON file to vector tiles
I need to display huge GeoJSON file using OpenLayers. So I decided to use VectorTiles. Library geojson-vt.js works perfectly for me, but unfortunately it requires my GeoJSON file to be preloaded on ...
1
vote
2answers
54 views
Why is the order of my features changed when using readFeatures in OpenLayers v4.6.5?
I have a geojsonObject that is a featurecollection of X number of features.
see picture
I Then add this to a vector:
var Source = new ol.source.Vector({
features: (new ol.format.GeoJSON())....
0
votes
0answers
20 views
Consume a GeoJSON service from GeoServer in QGIS 3.4?
It seems there has been an update to the way QGIS consumes GeoJSON files in version 3.4x
At 2.18.x, a WFS service with GeoJSON output from GeoServer such as:
https://server.org/geoserver/datastore/...
2
votes
1answer
42 views
Set default coordinate precision
Is there a way to set the default coordinate precision to 7 for GeoJSON files in QGIS? This would help me save time when I go to save files.
0
votes
0answers
33 views
Python - Issue to create choropleth map based on GeoJSON file: AttributeError
I'm trying to build a choropleth map, I cannot figure out why I get this error:
AttributeError: 'NoneType' object has no attribute 'get'
Here is my code:
station_nb is a dataframe with values ...
3
votes
0answers
60 views
Why an extra iteration on the first feature of a GeoJSON layer?
I'm using Python and GDAL to iterate over the features in a GeoJSON layer and I'm seeing this strange behavior where the first iteration is repeated a second time before moving onto the next feature.
...
0
votes
1answer
21 views
Format GeoJSON use Join method before export in Earth Engine
After filter an LANDSAT-05 for an small area
var Collection = function(pixel) {
var colForPixel = ee.ImageCollection('LANDSAT/LM05/C01/T1')
.filterBounds(pixel)
.filterMetadata('CLOUD_COVER','...
1
vote
1answer
53 views
Mimic in-line GeoJSON using fetch()
For simplicty, referencing this example:
https://carto.com/developers/carto-vl/examples/#example-load-external-geojson-layer
I would like to have this bit of code behave the same as through it were ...
2
votes
1answer
22 views
Get geometry type from Feature Collection for every row
I want to get geometry type for every row (like point, linestring, polygon etc.) from GeoJSON data.
This is my code for reading data.
import argparse
import geopandas as gpd
import os
import sys
...
1
vote
1answer
20 views
Using custom marker name in Leaflet from external GeoJSON file
I have the following code (which works great):
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.5.1/dist/leaflet.css" integrity="sha512-xwE/...
1
vote
1answer
53 views
Exporting GeoJSON from PostGIS?
I am, trying to export GeoJSON from postgis. I am using the following code which is working local machine but when I am trying to use this in a server the following error is occuring
CODE:
ogr2ogr ...
0
votes
1answer
36 views
Using getmapasync() function instead of getmap() function in Android to plot GeoJSON file?
This is the code that I have used to plot GeoJSON file in Google Maps in Android:
mMap = googleMap;
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
...
1
vote
2answers
47 views
Convert GeoJSON directly to geodatabase
I'm looking for a way to convert a GeoJSON File (from overpass-turbo.eu) directly into a Feature Class in an Esri geodatabase.
Normally I'm doing this by loading the GeoJSON into QGIS, Export it to a ...
2
votes
1answer
41 views
Non-interactive points in Leaflet
I do have a point layer (data from a GeoJSON) and a polygon layer (also GeoJSON) in Leaflet. Both layers are created the same way and I made both layers "non-interactive". Unfortunately the point ...
1
vote
0answers
24 views
Transformation issue with SVG to GeoJSON conversion
I have a vector image in SVG format. (without georeferences)
I am trying to display it using OpenLayers to display properties of different polygons in it.
I tried converting it to GeoJSON but the ...
0
votes
0answers
41 views
SVG to GeoJSON conversion - incorrect render [duplicate]
I have a vector image in SVG format.(without georeferences)
I am trying to display it using OpenLayers to display properties of different polygons in it.
I tried converting it to GeoJSON but the ...
1
vote
1answer
58 views
Access geometry.coordinates of sliced vector grid
I am trying to represent LineString GeoJSON as vector tile layer using Leaflet.VectorGrid.
But i need to do some interactive by clicking on vector tile layer.
but this vector tile layer has came with ...
2
votes
2answers
36 views
Setting Labels on Vector features in OpenLayers 5
I am following this very big example to set labels on the style of the vector but it's confusing.
The labels should be the Plot numbers, of each feature, which come from the JSON file.
Also i have ...
1
vote
1answer
65 views
Manipulating polygon data imported from Google BigQuery GIS within R
I have some polygon shapefiles (representing UK postcodes) which I have uploaded to BigQuery, using this guide, hoping to take advantage of the inbuilt GIS support described here.
I am trying to ...
0
votes
0answers
27 views
Import GeoJSON in QGIS with file name as layer name?
When I add a GeoJSON layer to my QGIS project, it always gets the name "filename name_field_value".
For example, file named CZ0100554782.geojson is as layer in QGIS named "CZ0100554782 Praha"
I ...
2
votes
1answer
62 views
GeoJSON files being saved without line breaks
Why are my GeoJSON files being saved without line breaks? Why are they missing the proper formatting? All features in the file are being saved in the same line.
I'm using QGIS 3.6.3.
Here is what I ...
1
vote
0answers
27 views
Blur all other area outside polygon in mapbox-gl
I am trying to create an effect like
Can view it by adding feature from fiddle in
http://geojson.io/#map=14/46.9597/7.1446
when added the feature in mapbox as geojson layer of mapbox-gl I am getting ...
0
votes
0answers
23 views
Convert Mapbox vector tiles to GeoJSON in browser
Although Mapbox's vt2geojson is fine for node use, I need to convert vector tiles to JSON in the browser. I haven't found a browser based solution for this. Is there one?
Possibly the solution is ...
0
votes
1answer
31 views
Using ogr2ogr for converting tables from non-public schema to GeoJSON
I've used ogr2ogr to convert tables in PostgreSQL database to GeoJSON which works fine for the public schema. The question is how can I set the schema to non-public to access my tables? I've already ...
0
votes
0answers
24 views
Creating shapefile/GeoJSON from CSV with zip codes
I have a CSV file containing zip codes to territory code mapping. I would like to create a map showing the boundaries of the territories as either a shapefile, GeoJSON, or TopoJSON. I was able to ...
1
vote
1answer
49 views
Join a CSV file to GeoJSON using ogr2ogr in a Python script?
I have a CSV which I would like to join to a GeoJSON.
I found this answer which I tried to implement but I can't get it to work just yet.
Here's an extract of my python:
join_command = ['ogr2ogr', '...
-1
votes
1answer
35 views
Converting ArcGIS Polygon data to Lat/Long? [closed]
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'...
3
votes
1answer
64 views
Re-project GeoJSON from pixel-space to lat-long in Python
I have created a GeoJSON of linestrings in pixel space using Python. However, I now need to re-project the file to match the same projections and extent of the .tiff file I wish to layer the GeoJSON ...
0
votes
1answer
75 views
Which is more performant GeoJSON or WMS/WFS using OpenLayers? [closed]
I'm developing a web application using PostGIS, Laravel, Vue.js and Openlayers, for the moment I generate the GeoJSON from my database using the following code :
public function plosWithGeom()
{
...
2
votes
0answers
37 views
Creating GeoJSON REST service
I'm trying to create a GeoJSON REST service from a PostgreSQL connection.
First I fetch GeoJSON as a string from PostgreSQL:
import java.util.*;
import java.sql.Connection;
import java.sql....
1
vote
1answer
38 views
Checking if GPS coordinate is in country polygon
In order to check in which country GPS coordinate is in, I've found this github repo, where there is GeoJSON file for each country.
I've loaded the files to geojson.io, and they seem very accurate.
...
1
vote
1answer
46 views
GeoJSON layer shows/enables only one row in attribute table in QGIS
I have a GeoJSON polygon layer which I converted from a shapefile layer. The layer opens up in geojson.io, for example, with no problem, displays the table correctly, etc:
However, in QGIS the ...
-2
votes
1answer
50 views
WFS display problem using GeoServer and OpenLayers
I know a lot of issues have already been posted about this tricky situation, but I can't figure out where is the problem in my script and most of the discussions about OpenLayers are outdated.
I'm ...
0
votes
0answers
41 views
Leaflet display PHP data on GeoJSON popups
I want to display data from my database which I get in JSON format with getJSON function. I want to display these data on all GeoJSON features based on a condition.
I am trying to do that with the ...
0
votes
0answers
43 views
How convert OSM relation to GeoJSON -based all kind of relation member roles
I just want to convert OSM data to GeoJSON where it is pretty simple with node and way tags of OSM data, but relation which is giving complex can't find the logic to convert OSM relation to GeoJSON ...
3
votes
3answers
67 views
Projection fails when ran with assertions enabled [closed]
The following minimal example runs fine only when assertions are disabled:
src/main/kotlin/main.kt:
package com.regions
import org.geotools.geojson.feature.FeatureJSON
import org.geotools.geometry....
0
votes
0answers
7 views
QgisGeoJSONExportPlugin won't install
I'm trying to download and install the Plugin "QgisGeoJSONExportPlugin" I downloaded from the "QGIS Python Plugins Repository", since I couldn't find on the "manage and install plugins" window.
So I ...
0
votes
1answer
130 views
How to cluster markers using the “Geojson-dashboard” in Leaflet JavaScript
I know how to use Leaflet.markercluster, but for some reason I can't use with geojson-dashboard framework template for Leaflet (http://fulcrumapp.github.io/geojson-dashboard/).
But I have a simple ...
0
votes
0answers
42 views
Opening geodata in GeoPandas?
I've downloaded some geodata but I'm unable to import it into GeoPandas.
This is a sample of the geodata (I've trimmed the JSON object):
{'displayFieldName': 'NAME',
'fieldAliases': {},
'...
