An open geographic data format based off of JavaScript Object Notation

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4
votes
0answers
49 views

Describing borehole information with geojson (javascript)

I deal a lot with borehole information and looking the best way to move it around in javascript / take advantage of javascript libraries (e.g. leaflet) for looking at this information on mobile ...
4
votes
0answers
230 views

How do I clip Geojson FeatureCollection with another Geojson polygon

I have a GeoJSON file that contains one FeatureCollection with a bunch of features that are polygons. I also have the boundary of the continental USA in another GeoJSON file. I'd like to clip the ...
3
votes
0answers
1k views

How can a leaflet SVG overlay be placed outside of the leaflet-overlay-pane?

I have SVG on top of GeoJSON in my map. How can a leaflet SVG overlay be placed outside of the leaflet-overlay-pane while keeping GeoJSON in place in the leaflet-overlay-pane? (For example, how could ...
3
votes
0answers
56 views

simple raster format to use in Web applications?

I'm building a Web application in which users create and edit very coarse raster data. They're assigning values to cells in a georeferenced grid. Right now I'm storing the values in a multidimensional ...
3
votes
0answers
147 views

GeoJSON support in ArcObjects 10 .NET

i am currently trying to build a geoprocessing application using OpenLayers and ArcObjects, I have some features that user draws on openlayers and i need to send these features to arcobjects for ...
2
votes
0answers
24 views

Different Leaflet fillcolors for different layers

I have a leaflet map set up with two layers and I want them to use different colorization functions to color the choropleth shapes. My shapes are set up in layers like this: var povertyLayer = ...
2
votes
0answers
19 views

geopandas: can't save geojson

My task is to upload geojson, add data from corresponding csv, drop some columns, then save it back to geojson. However, after I did everything, added csv data (gj.join(df) ), etc, I can't save it ...
2
votes
0answers
60 views

What is the most suitable way to get the boundary of a state or a country or the whole world dynamically?

I am working on a project where I have to create filled map charts based on the data client has provided. The data has latitude and longitude information. Based on the selected level (city or state or ...
2
votes
0answers
243 views

Using Extjs 5 & OpenLayers 3

To consume geojson data from a REST HAL CORS webservice, in client side i'm using ExtJs 5, but to map data having geometries i'm stuck between choosing geoExt2 which has a branch based on extjs5 and ...
2
votes
0answers
154 views

Leaflet filtering existing featuregroup

I have a leftleat map and i would like to filter the featuregroup i am displaying. exp_colJSON = new L.geoJson(exp_col,{ onEachFeature: pop_col, pointToLayer: function (feature, latlng) { ...
2
votes
0answers
120 views

How to get Geography data to GeoJSON in PostgreSQL?

I am using PostgreSQL database and there is a field in a table(area), i.e., public.geography(Points,4326). It contains below type of records "0101000020E6100000BA83D89942334540780B24287ED051C0" I ...
2
votes
0answers
265 views

How to load GeoJSON into PostgreSQL database using Python?

What I have tried to do is (In Python IDLE): import psycopg2 import json try: conn = psycopg2.connect("dbname='carto' user='postgres' host= localhost password='password'") except: print "I am ...
2
votes
0answers
89 views

Developing workaround to arcpy.asShape truncating all values to 3 decimal points?

I've read a few questions\answers about converting a GeoJSON Shape into an ESRI Object. Unfortunately most of the answers pointed to decoding the dictionary's manually. Im a bit more lazy ^_^ The ...
2
votes
0answers
162 views

Using OpenLayers' Refresh strategy for GeoJSON

I am trying to use the Refresh Strategy reading a GeoJSON file in OpenLayers, however it doesn't work (but it works perfectly using for instance .Fixed() strategy), here is my code: var ...
2
votes
0answers
255 views

Getting JSON/JSONP/GeoJSON from GetFeature WFS request to ArcGIS for Server?

I'm trying to perform a GetFeature request to an ArcGIS 10.2.1 for Server WFS service and would like to get response in geoJSON format. If I look at the GetCapabilities from the service the only ...
2
votes
0answers
206 views

Formatting Google Places API GeoJSON and Import to QGIS?

Hi Stackexchange I'm trying to export JSON or XML data to my desktop and import it to QGIS. This is the URL I'm using but it appears to be incorrectly formatted: ...
2
votes
0answers
116 views

ogr2ogr does NOT save “styles”, say “color”, information; how do I get around it?

I'm using ogr2ogr to convert KML to GeoJSON and I'd like to extract style information along with the data. The bash script I am using is: filekml="/tmp/poly.kml" filegeojson="/tmp/poly.geojson" ...
2
votes
0answers
90 views

Stray horizontal lines after converting from GeoJSON to topojson

After converting a GeoJSON file to topojson, and loading the topojson into Leaflet, stray lines appear in the resulting map. Like this: What is causing this? If I view the GeoJSON, these stray ...
2
votes
0answers
144 views

What is wrong with my data receiving from php script for geoJSON TileLayer?

I want to get geo data as geojson for geojson tile layer requests in leaflet. I set up a geojson layer like this: https://github.com/glenrobertson/leaflet-tilelayer-geojson/ A php script answers ...
2
votes
0answers
82 views

loading geojson in leaflet

I just added the geoJSON vector layer in leaflet for my hybrid mobile app using phonegap, the problem is that when I add the geoJSON file of size larger than 2mb the application crashes. What is the ...
2
votes
0answers
165 views

How can I merge adjacent polygons and return all (adjacent and not adjacent) as Multipolygon?

I have a postgres database with administrative boundaries and their geometry. Each of those boundaries have an ident number. What I want to achieve: First I want to select all rows which are ...
2
votes
0answers
109 views

Adding marker on a leaflet map

I'm very new to GIS and for learning I started with building a simple web app with GeoDjango. I am using dango-leaflet. Since I have a very limited knowledge I am facing many challenges. I'm trying to ...
2
votes
0answers
371 views

Z-Index in GeoJSON features using leaflet

I have a watershed polygon with sub-watersheds contained within the larger watershed. I would like the sub-watersheds drawn on top. Can i control the drawing order of features within a geojson object ...
2
votes
0answers
320 views

How to add an offset to a GeoJSON layer in Leaflet?

Using the example GeoJSON tutorial code at leafletjs.com. Change the myLines variable so that the two lines overlap, but run in opposite directions as follows: var myLines = [{ "type": ...
2
votes
0answers
1k views

Geoserver WFS get feature doesn't work - “SyntaxError: missing ; before statement”

I'm trying to use geoserver WFS json for creating vector layer (instead of using WMS) because this is a layer I redraw every 20 seconds. This is the code I use : function getJSON() { var ...
2
votes
0answers
207 views

Show geoJSON properties in jQuery Mobile Panel

First off I'm a novice at JS so please bear with me if this is a simple task to complete. I'm currently using the stock LeafletJS popup bubble to display the properties from my geoJSON. However, I ...
2
votes
0answers
421 views

R, GeoJSON and Leaflet

I recently learned about leafletjs.com from an R-Bloggers.com post. One such tutorial that I would like to achieve is to create interactive choropleth maps with leaflet. I have been using the rjson ...
1
vote
0answers
22 views

Shared edge between two geojson polygons

I am interested in getting the coordinates of a shared edge (if exists) between two geojson polygons. I am (currently) using turfjs and geojson-equality libraries I tried this but I consider it quite ...
1
vote
0answers
29 views

Can I use GeoJSON GeometryCollection in QGIS?

I want to create a GeoJSON that contains multiple geometries to be used in QGis later on. Now I red through the specs here: http://geojson.org/geojson-spec.html#geometrycollection When I simply copy ...
1
vote
0answers
51 views

Using GEOJSON offline in QGIS

I have some GEOJSON-Layers in my QGIS-project. The problem is, that when I zoom in or out, it takes very long to built up the window again. That's because it always loads it from the server. But I ...
1
vote
0answers
10 views

Editing geojson without separating segment endpoints

I have a few maps of city sidewalks in Geojson format which I need to manually edit to make corrections. However, in the tools that I've tried, geojson.io and QGIS, segments that share an endpoint are ...
1
vote
0answers
34 views

Leaflet with GeoJSON Tiles and a Partitioned Datastore

I'm looking at displaying a frequently updated (potentially thousands of points per second) global dataset of locations on a tiled slippy map. Functionally I'm just going to be putting a marker down ...
1
vote
0answers
37 views

No output when rendering GeoJSON using Leaflet() package in RShiny

I am creating a Rshiny interface on that can take in the user input when a user click on a point on the map, query the user's selection from postgresql and return another map layer. The package I am ...
1
vote
0answers
82 views

Help serializing a postGIS query to geojson

I have a query which I would like to serialize to geoJSON: select article_title, pub_date, city, geom from article, location where article.id = location.id; I can serialize the geom field easily ...
1
vote
0answers
27 views

Telerik ajax RadMap

I am using telerik RadMap with client side binding in the OnInitialize client event. Copied from the examples: function OnInitialize(sender, args) { var originalOptions = args.get_options(); ...
1
vote
0answers
117 views

Rendering TopoJSON in Leaflet from GeoJSON PostGIS output?

I'm using the query found here SQL query to have a complete geojson feature from PostGIS to get a geojson that I can display on a leaflet map. However, the amount of data is kinda big and the ...
1
vote
0answers
29 views

How not to enforce lowercase field names in Spatialite?

I use a geojson file to publish a webmap. When I need to update the data I convert it to Spatialite, add the data, then convert back to geojson. Recently in QGIS 2.8 I found that the column names ...
1
vote
0answers
42 views

JSON Layer does not show when .setview Changes

I've set a Mapbox map with a geoJSON layer overlaying it. The problem is that with the default set values, the json layer shows up just fine. However, If I change the .setView too much, the json layer ...
1
vote
0answers
60 views

QGIS/GeoJSON: Dissolve featurecollection consisting of polygons and multipolygons into a large multipolygon

I've read this question. I would like to know how to do this in QGIS. I have a Geojson file with a featurecollection, starting with: ...
1
vote
0answers
137 views

How to get geoJSON from spring REST Controller?

I am developing a GIS application with java(Spring-4.1.5 + Hibernate-4.3.8) and OpenLayers. For this project I use GeoTools-13RC, HibernateSptial-4.3, jts-1.13 and jackson-2.5. In this project, I have ...
1
vote
0answers
31 views

How widely supported are nested FeatureCollections in GeoJSON?

I know that FeatureCollections inside FeatureCollections are not supported according to the GeoJSON spec, but I have seen multiple implementations that do support it. Are nested feature collections ...
1
vote
0answers
119 views

Merge multiple geojson-polygons

Lets say I have a very big image With a polygon in it: I want to polygonize this very big image with gdal polygonize. But the image is too big, so I dont have enough memory to polygonize that ...
1
vote
0answers
131 views

create image out of geojson (gdal_rasterize?)

Short version: I need to know how I can convert a .geojson-file to an according .png-file (or any other image format) long version: I have a .geojson which was created by gdal_polygonize from a .png ...
1
vote
0answers
142 views

Global POI database in JSON format?

Does anyone knows if there is a flat file database of points of interest in a json format somewhere available for download? If not how would one set off to create such a database? Are there any tools ...
1
vote
0answers
298 views

Fetching postgis data through php json and passing to leaflet map

I am new to this and trying to explore leaflet and geojson a bit. Please help me with this. This is my php page which I am using to fetch data from PostGIS. (the data opened successfully in the ...
1
vote
0answers
33 views

combine multiple geojsons

I have several geojsons which contain polygons. But the polygons are reaching over other geojsons. When I import them into lets say Qgis, the polygons, which are distributed among several geojsons are ...
1
vote
0answers
155 views

Saving data in OL3

I have a small app where I would like to be able to digitize new features and save them for use outside the app. I am using geojson as I don't have a geoserver I have managed to create a button that ...
1
vote
0answers
74 views

GeoJSON to routing graph

What are the best automated ways of placing the nodes and edges of a routing graph using the GeoJSON data of a multi-level building? What other data is needed (area layout, accessor directions etc)?
1
vote
0answers
150 views

Why can't gdal save CRS information to GeoJSON?

gdal fails to add CRS definitions to GeoJSON files in some cases. Try this, for example, from any linux terminal that has gdal installed: # download the data wget ...
1
vote
0answers
49 views

Read and Write data with Open Layers3

I'am currently using postGIS/geoDjango/OL3 I need the capability for a user to drop a point on the map, and store that in my database. When any user returns, that point will be shown on the map. ...