Questions tagged [geojson]
GeoJSON is a geospatial data interchange format based on JavaScript Object Notation (JSON)
2,154
questions
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10 views
Leaflet map without basemap
I have a geojson of US States and i only want to show them in map.
I want to remove any basemap which is addded in map.
I only want to show US States which i am loading from geojson and i want to add ...
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0answers
15 views
How use GeoPandas to generate shapefile from GeoJSON that could be open for ArcGIS
I got from an API a layer of parcels in format GeoJSON, just like the file in this .zip
https://www.dropbox.com/s/5eqi8bbqt6ej6lc/json_data.rar?dl=0
I need to convert this to a shapefile that could ...
1
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0answers
29 views
Spatial operations with JSTS
I'm working with Leaflet and I'm also working with JSTS to do the spatial operations. In most of the cases I want to create Polygons inside another Polygon Geometry.
In this case the yellow shape is ...
2
votes
1answer
47 views
GeoJSON to CSV with geometry using QGIS
I downloaded a GeoJSON file from vangdata.carto.com and I'm trying to convert it to CSV that has geometry data in tact. I'm trying to achieve the same result as a CSV file when exported from public....
0
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1answer
19 views
GeoJSON map color does not change
I am trying to code save/load function. I can say my save and load function works properly because it displays on console that for example when I load "Canada" file from database, it shows ...
0
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1answer
16 views
Gdal_polygonize and gdaltindex error
I'm trying to convert .tif file to .geojson using following cmd:
gdal_polygonize.py flowdirection.tif -f "ESRI Shapefile" flowdirection_shp.shp
After which I'm getting error:
Program '...
1
vote
1answer
11 views
Output in GeoJSON data format using Ruby
I have some data with Ruby script (obtained by geolocating, loading from config files etc) that I want to output as a GeoJSON file.
I have some ugly code that generates valid geojson files - but is ...
1
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0answers
41 views
Finding closest marker to user location Leaflet KNN
I am using Leaflet KNN and would like the closest station to a users location, from the web browser, to have a pop up saying it is their closest station.
How can I find the nearest marker to the user ...
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1answer
26 views
How to visualize different segments of a MultiLineString?
I have a GeoJSON file that describes the outline of an ice shelf; I hand-digitized the geometry from satellite imagery and DEMs.
The data consists of a MultiLineString, but some of the constituent ...
1
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1answer
13 views
MapBox GL - filtering GeoJSON by feature index
I'm using MapBOX GL JS with GeoJSON data source. The content of the GeoJSON is changing dynamically. It is a FeatureCollection which contains polygons. I would like to update my MapBox data source ...
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0answers
24 views
Query to Display Polygons not Working on Geodjango-Leaftlet Web App
I am currently working on a Geodjango-Leaflet-OpenStreetMap web app. I have around 540000 polygons of property boundaries that were drawn in ArcMap; the polygons will be imported to the web app later ...
1
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1answer
39 views
Display a track comment when clicking a track in Leaflet multi track layer
See this question Displaying different tracks from one GPX XML file in different colors in Leaflet
If I hover a track the hand transforms into an index pointer but if I click nothing happens, see ...
0
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1answer
22 views
How to ensure the values set in the CSV are captured within the GeoJSON feature values when merging CSV attributes into a GeoJSON
I create a GeoJSON but the merged values are null. The length of the datasets do not match -- is this a potential issue? If so, how do I merge for all covid matches. (FYI this isnt Covid19 related COV ...
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0answers
19 views
Markers appearing slightly off their points when Leaflet map zoomed out [duplicate]
I have noticed that the markers on my Leaflet map are displaying slightly off where they should be. However when I zoom in they go to the correct position.
Is this a common error? How would I go about ...
0
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1answer
34 views
SpatiaLite splitting large polygons from imported shape file into multiple rows
I have this shapefile:
shapes.shp
in which I have imported in SpatiaLite using this command:
spatialite_tool --import --shapefile shapes --db-path db.sqlite --table shapes --charset UTF-8 --srid 27700 ...
0
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1answer
47 views
GeoJSON coordinates transformation to Web Mercator coordinates
I'm not sure how OpenLayers is converting the raw coordinates from a GeoJSON's geometry.coordinates property into a Feature's extent property. I can't really seem to find a lot of documentation on it ...
1
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1answer
19 views
Order and orientation of pgRouting result
I have a routing application based on pgRouting and OSM data.
When I generate a route from coordinates A to B, it works well, but when I export the geojson to GPX format, I notice, that some ...
0
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2answers
32 views
GeoJSON Datastore and GeoServer
I found a way that should allow to use (Geo-)JSON flies with GeoServer: An unsupported GeoTools GeoJSON Datastore (thanks to this answer)
Here is a link to the jar: https://mvnrepository.com/artifact/...
0
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1answer
33 views
Using large data JSON file in Leaflet markercluster [closed]
I want to show the JSON file consisting of many points on the map using the leaflet marker cluster plugin.
My JSON file looks like:
[
{
"json_featuretype" : "Output",
"...
-2
votes
0answers
28 views
Geometry editing plugin for maps [closed]
We have an ongoing project and are looking for a geometry editing plugin for maps to use in our application (tech stack: angular for front-end and .net core for back-end).
Requirements
draw geometry ...
0
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0answers
23 views
Divide polygon features to reduce feature size
I am attempting to load FCC Mobile Deployment Form 477 Data into Google BigQuery for analysis and combining with other data I am using. I converted the shapefiles into new-line delimited geojsons ...
1
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2answers
48 views
Changing leaflet circle marker colour and size when clicked upon
I am currently using GIS to plot train stations within Wales
I have currently made a custom circle marker to point to that of the stations latlng successfully adding it to the map. I am wanting the ...
1
vote
1answer
94 views
Select several polygons with the same identifier in GeoJSON layer
I have a map application where:
I load polygons as GeoJSON objects
I draw all polygons in a single layer
I highlight a polygon on mouse hover from a identifier list
Some polygons have the same ...
0
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1answer
36 views
Manipulating data with a Handsontable spreadsheet in a Leaflet GeoJSON Layer and rerender the map
The goal is to add a spreadsheet view to a GeoJSON Layer to comfty edit the properties directly in the spreadsheet and the location (lat/long) within the map by dragging the marker with leaflet.draw.
...
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13 views
QGIS: JSON (GeoJSON) from Public API is empty if done by protocol
This Question is actually related to this one:
QGIS: JSON Load error: Invallid Layer cannot be loaded in: Origin is GeoJSON
Because the context is the same but I am going on this by a different angle.
...
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0answers
22 views
QGIS: JSON Load error: Invallid Layer cannot be loaded in: Origin is GeoJSON
So far I have tried to load in a GeoJSON inside QGIS, but I get a problem doing so.
To give some context I am testing a system, where we can get a JSON more specifcally a GeoJson from a API. for now ...
0
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0answers
15 views
Is it necessary to sanitize GeoJSON/WKT inputs to Leaflet / Terraformer?
I am currently building a website which includes the following:
a Leaflet map where users can draw polygons using Leaflet-draw (and enter other data using HTML forms)
a paired text field where users ...
0
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0answers
32 views
Setting a number of decimal places a GeoJSON will have when pulled from PostgreSQL db
I have noticed that the markers on my Leaflet map are displaying slightly off and I believe this is being caused by the GeoJSON coordinates only pulling to 4 decimal places. I can see this by looking ...
0
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0answers
23 views
Dropdown list and map.fitBounds in Leaflet
In my Lealfet application I have a dropdown list which uses data from a GeoJSON to directly populate the list.
HTML
<div class="form-group">
<label for="inputCS"><...
-2
votes
1answer
49 views
GeoJSON coordinates are displaying incorrectly on map
I am setting up my first Leaflet map with react / node / PostgreSQL and have managed to get to the level where I have pulled the geojson form my PostgreSQL database. However from what I can see the ...
-1
votes
1answer
67 views
GeoJSON custom marker for different data sources
I need help how to show markers with two different colors for two different GeoJSON data sources.
Here's first source geojson.php:
{
"type": "FeatureCollection",
"...
0
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1answer
40 views
Publish JSON with GeoServer
I generated a JSON by a PHP script and now want to load this JSON to GeoServer. So far I just found ways to publish SHP files but not JSON...
0
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1answer
16 views
One-liner to print first feature from GeoJSON
To make the findings from this GDAL issue more discoverable, I'm posting here as well.
ogr2ogr has a -limit option. I couldn't find this option for ogrinfo, while ogrinfo has e.g. -where. I would ...
2
votes
1answer
32 views
Exporting a group of raster layer bounds from QGIS to a GeoJSON
I have a QGIS project with a lot of raster layers; and I want to build a Mapbox map based on this project; that would display those images on a website's map.
I need a way to export a group of raster ...
0
votes
2answers
91 views
Dynamically load data from a GeoJSON
I ask a new question about the problem I have, because I tried it but I don't know how to solve it.
(I'm learning OpenLayers, and I see that it isn't that easy).
Using a html select, I run a PHP query ...
1
vote
1answer
22 views
QgsJsonExporter preserve attributes order in QGIS
I've a memory layer i created that i would like to export in GeoJson.
If i add it to main canvas, the attributes table preserve attributes order.
# Attributes order preserved
QgsProject.instance()....
0
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0answers
13 views
Merging two GeoJSON files for Leaflet Map in R
Does anyone know how to convert 2 GeoJSON files into 1 in R? I'm trying to build a Leaflet map for the two files together.
library(geojsonio)
library(leaflet)
dataset1 <-geojson_read("https://...
0
votes
1answer
32 views
Extracting only roads through Overpass API query
I am using overpass API and querying the api for ways,as a result it gives points, whereas I need only lines, multiline strings and polygons. But while using the following code, I get a geojson file ...
1
vote
2answers
57 views
Popup for each feature when using Leaflet marker.cluster plugin
I have leaflet map to display locations of points. Firstly, I use leaflet.ajax plugin to load the points data in GeoJSON format, then I want to enable cluster view using the Leaflet.markercluster ...
1
vote
1answer
28 views
Converting ArcGIS / ESRI PBF to GeoJSON
Anyone able to convert ESRI PBF into anything "human readable"? For example GeoJSON?
The ArcGIS dev doc is not very concrete here:
The PBF format is binary and is thus smaller and faster ...
0
votes
2answers
57 views
Loading GeoJSON data to Leaflet overlay?
I am trying to get GeoJSON data from an API URL to an overlay.
Code;
// - GET GEOJSON DATA WITH AJAX TO OVERLAY REGION - //
// Get the data
var regions = $.ajax({
url:"https://public....
0
votes
1answer
35 views
Unsupported GeoJSON type
I run a query and I get a GeoJSON file, but when I try to load the file into the map, I get the error that it's an Unsuported GeoJSON type.
this is the PHP file that generate GeoJSON :
$element = $...
1
vote
1answer
66 views
Loading a dynamic GeoJSON created from a PostgreSQL query
I want to load a dynamic GeoJSON, I get the data for the search from a select, execute the query and write the GeoJSON file with a session_id like this
$element = $_POST['element'];
$query = "...
2
votes
1answer
55 views
Converting a single shapefile with multiple features into independent GeoJSON files using ogr2ogr
Let's say there's a single shapefile that contains multiple features. Most of which are polygons.
How can one convert those features into separate independent GeoJSON files?
Can this be done with ...
0
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0answers
36 views
Importing GeoJSON without duplicating values in properties
Here is the issue I am having, it should be fully reproducible. I am attempting to import a GeoJSON into ArcGIS Pro. The issue is that if one of the features has a property that the other doesn't, ...
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0answers
25 views
Getting JSON data from Google Maps [duplicate]
I have reviewed Getting polygon boundaries of City in JSON from Google Maps API? as well as the answers by german_martin and Kamil Latosinski. There are two critical weaknesses in Nominatim, using ...
1
vote
1answer
51 views
Dump multiple geometry columns of a GeoDataFrame to Features in a FeatureCollection (GeoJSON) instead of properties?
I have a GeoDataFrame with some of its attributes that are geometries (only the position is the one which was interpreted as the active geometry when loading the data from PostGIS):
import psycopg2
...
0
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0answers
135 views
Cannot access GeoJSON layer in react-leaflet
I am using React Leaflet to render Leaflet map and its GeoJSON component to render polygons. I am trying to implement dragging multiple polygons.
I added Leaflet.Path.Drag library and tried to reuse ...
3
votes
1answer
67 views
Can't display GeoJson on map
I've generate the GeoJson below, but I'm not able to display it on map, neither on http://geojson.io/.
I'm pretty sure it depends from my GeoJson but i don't understand why.
What am i doing wrong?
{
...
0
votes
1answer
35 views
How to contract geojson polygon
I'd like to convert the big red area to a smaller one (blue) by shifting their borders parallelly by a certain distance to inner direction. This is not equivalent to scale as the result shape will ...
