An open geographic data format based off of JavaScript Object Notation

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85 views

How Do I configure PostGIS 2.0 on windows to use ST_GeomFromGeoJSON?

I have installed PostGIS 2.0 on a Postgres 9.1 database on a Windows 2012 Server. I need to write an insert query, which uses ST_GeomFromGeoJSON(). The Docs for this query say that I need - JSON-C >= ...
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2answers
46 views

How to remove features from geojson by mouse selection?

There are these unnecessary lines in my geojson: You see, not all the borderline was deleted when I merged two countries. Is there any way to quickly select and remove the features in a practical ...
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1answer
134 views

Get Features from OpenLayers Layer.Vector not working

polygon_layer = new OpenLayers.Layer.Vector("Polygone", { projection : projLonLat, strategies : [ new OpenLayers.Strategy.Fixed() ], protocol : new ...
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1answer
119 views

projection error on Leaflet map

I am trying to add a converted shapefile (now a geojson) to a Leaflet basemap, using EPSG 26986, so I tried using proj4leaflet to reproject it. However, I keep getting an error message "phi2z has ...
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1answer
67 views

Can a GeoJSON GeometryCollection contain another Collection?

From a reading of the spec it seems that a GeometryCollection is a Geometry and can contain geometry objects? But I want to be sure that this is really allowed before I file a bug report.
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2answers
200 views

Can't read returned geojson

I've got a function that takes an Openlayers mouse click and puts the click location into a SQL statement which then gets passed to a JSP script which runs the SQL statement on the PostGIS database ...
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1answer
178 views

OpenLayer and not well formed Json

I am learning to use GeoExt and OpenLayers, and I want to reproduce one of the examples given at the geoExt website. The script call a GeoJSON containg the position of Alp summits. I downloaded it via ...
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1answer
156 views

SQL Command to convert pgRouting result to GeoJSON

My goal is to produce a Web UI for pgRouting using this tutorial. I have already imported my data from an OSM pBF to PostGIS using osm2po. Using the pgRoutingLayer plugin for QGIS, I was able to ...
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1answer
67 views

BBox missing when converting TIGER to GeoJSON

I can't get the bounding boxes of polygons if TIGER/Line shape files when converting them to GeoJSON using FWTools. The other default information is present and there is no difference between the ...
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1answer
931 views

OpenLayers and GeoJSON - problem projecting EPSG:4326

I'm trying to project some GeoJSON data but it ends up at 0,0. I've looked at other posts and tried those solutions to no avail. Can anyone help? Here is the code: <html> <head> ...
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1answer
460 views

How to add images in CartoDB infowindows

Can't seem to get the default site to display images. I've added hrefs to a image column. example; I've dragged the image column to the top of the infowindow sidebar app and it still just displays ...
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1answer
33 views

GeoJSON - Resymbolize without redownloading?

GeoJSON served via GeoServer to OpenLayers. Simple question - Is it possible to apply a new styleMap without redownloading the data from the server? I am currently using the following, but am ...
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1answer
2k views

Integrate GeoJSON file with openlayers.protocol.http

I've got a problem with (the title says it) integrating a geojson file in my openlayers map. I have to use the openlayers.protocol.http way. I examined lots of examples on the web (and on ...
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1answer
447 views

Draw svg-circle on a coordinate with polymaps

I'm making a tracker system which uses polymaps to display a satellite image. The code is copied from the bing-example on the website of polymaps. I now want to periodically call an update function ...
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1answer
262 views

how to make openlayers example work in jsFiddle

Hy, I'm working on a jsFiddle with a openlayers example in it. http://dev.openlayers.org/releases/OpenLayers-2.11/examples/snapping.html At the moment it's not working because it's not getting a ...
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1answer
553 views

Vector layer won't move as window resizes in Chrome

I have a GeoJSON layer that I am treating as a javascript object in my openlayers map. When I use IE or Firefox, everything works fine. However, in Chrome, as I resize the window, the GeoJSON layer is ...
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2answers
744 views

Convert ArcGIS Javascript api Geometry Object to GeoJson [duplicate]

Possible Duplicate: How to convert ArcGIS Server JSON to GeoJSON? How to convert ArcGIS Javascript api Geometry Object to GeoJson using Javascript?
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1answer
517 views

How to update GML layer without reloading local file?

I set up a GML layer with local GeoJSON file as data source: veclayer = new OpenLayers.Layer.GML("vector", "localfile.json", { format: OpenLayers.Format.GeoJSON, strategies: [new ...
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0answers
18 views

How can we generate GeoJSON from SQL data with latlong

Is there any way we can create GeoJSON from SQL server table with Latitude & Longitude Data?
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1answer
26 views

converting/parsing geojson into com.vividsolutions.jts geometry

Does any has any experience with converting string geojson into com.vividsolutions.jts geometry object (point, polygon, etc). Maybe there is some java library I cannot find. Greets!
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0answers
37 views

django---error in displaying data and displaying it on the map

. i am trying to display a feature queried from postgis. . i also designed a user input field to enter the id of the desired feature to be displayed. . i have already queried the attributes first ...
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0answers
110 views

OpenLayers3 vs Leaflet for styling multifeature geojson

I'm experimenting with various options for displaying geographic information to the public in html format. The ultimate aim is to build an online application where anyone can add the route they cycle ...
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0answers
176 views

Access-Control-Allow-Origin problem when loading json file from Amazon S3 to display in OpenLayers

This is my code for displaying geojson in OpenLayers, where "geourl" is directed to a json file in Amazon S3. geojson_layer = new OpenLayers.Layer.Vector("GeoJSON", { strategies: [new ...
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2answers
73 views

Printing possible for openlayers GeoJson WFS with Mapfish printing service and wkhtmltopdf?

I searched lots of places but i couldn't find proper examples or documentation to do printing using Mapfish Printing service or Wkhtmltopdf. My application got few WFS layers from openlayers and ...
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0answers
77 views

How to get data from TileMill tileLayer properties in Mapbox for click/hover

I've successfully used Leaflet to load a geoJSON polygon-shapefile with data, and added click and hover interactivity to the layer. For a large dataset, I switched to mapbox.js 1.6.1, used TileMill to ...
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1answer
66 views

JSONP working with Geoserver and OpenLayers

I'm in this scenario (fighting with the same origin police issue): I have a map initialized with OpenLayers and a WFS request trough the Protocol.Script object that is giving me this error: ...
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58 views

Folium GeoJSON Overlay Not Appearing

I am in the midst of a task which involves the clustering of assessment neighborhoods into larger neighborhoods (data link). The goal is build these neighborhoods in a manner consistent with major ...
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2answers
85 views

json to xml transformation with x2js

I am trying to transform a JSON object to XML, but i have somehow get stuck in jscript (not an expert). Here is the code: ... var GEOJSON_PARSER = new OpenLayers.Format.GeoJSON(); var ...
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2answers
528 views

How to project pixel coordinates in leaflet?

I am trying to create a map based on an image which is 16384x16384 px, but I would also like to add markers at specific locations using pixel coordinates of this given image. I created a tile layer, ...
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1answer
190 views

How to export a geojson file with correct order of coordinates?

I was testing rendering of data via GitHub in geojson format, because I wanted to use it for INSPIRE data. INSPIRE data are in GML 3.2.1 format. I've downloaded one of datasets from ...
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101 views

Possible to rollback from QGIS 2.0.1?

I'm running Ubuntu 12.04 LTS. Unfortunately Ubuntu has automatically upgraded my QGIS from 1.8 to 2.0.1. And 2.0.1 which creates GeoJSON files that OpenLayers cannot parse. Would be best for me to ...
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0answers
516 views

OpenLayers and GeoJSON - possible to create, modify and delete features?

I wondered if anyone has some OpenLayers GeoJSON code to read, create, modify and delete features (i.e. instead of using WFS-T)? This is how far I've come - I've no problem changing the pop-up to a ...
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2answers
261 views

Polygon intersection with bounding box with polygon's holes intact

I am trying to serve GeoJSON FeatureCollection tiles with each feature's geometries trimmed to the tile boundary. I am working on a Leaflet plugin to re-assemble the geometries. It works by building ...
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301 views

translating and scaling viewport to fit geojson map in D3js

I am trying to load a map of Rio de Janeiro (Brazil) in GeoJson for with D3js the code and the map is here: https://gist.github.com/4157853 I can open the map normally with Qgis, but with d3js ...
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668 views

searching GeoJSON features

After googling for many days and reading the OL documentation, I don't understand well how the filterToParams in OpenLayers.HTTP protocol should work, what I'm trying to do is to find and display the ...
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1answer
431 views

Select independent objects using GEOJson on Openlayers

I'm working with OpenLayers and loading a couple of GEOJson files which works perfectly. Now I want to be able to select individual components of the GEOJson file. As for example if I have more than ...
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0answers
44 views

How to load GeoJSON files directly onto QGIS? [duplicate]

Possible Duplicate: Plugin or script to get QGIS to display geoJSON in a layer Is there a way to do this? Or is there a way i can put it onto PostGIS and then load it onto QGIS? I actually ...
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0answers
128 views

How to show an array of 2d points/polygons in Polymaps (Cartesian coordinate system)

I need to display these 2d points/polygons (Cartesian coordinate system) on Polymaps with GeoJson layer. I do not use the other layers. Do I need to convert xy coordinates to the lat lon? If so, how? ...
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1answer
286 views

Polymaps / Tilestache tiling grid mismatch

I have set up a basic PostGIS / Tilestache / gunicorn / nginx / Polymaps test environment, rendering my dataset from PostGIS to GeoJSON and shipping it out to be rendered in Polymaps. That works ...
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3answers
113 views

Postgis ST_AsGeoJSON() to openlayers security issues?

Im about to implement a python script serving my openlayers code with GeoJson data from PostGIS. However, here How to connect OpenLayers to PostGIS data? I see " Unfortunately you cannot connect a web ...
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2answers
108 views

How to plot geoJSON using Python?

I have huge geojson file that I am working on: [{ "geometry": { "type": "MultiPolygon", "coordinates": [ [ [ ...
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1answer
174 views

geojson -> topojson : no output

Trying to convert my geoJSON file into topoJSON so I downloaded topojson from npm and followed the instructions on gis.stackexchange Convert GeoJSON to TopoJSON basically the same as the topoJSON ...
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1answer
1k views

Building Floor Plan map using OpenLayers and json

How to show map of building floor plan using OpenLayers and json. moreover, i want to know that how to change features dynamically with zoom based from json files. Let's take example, Initial the ...
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1answer
869 views

Problem loading a GeoJSON file using Openlayers

I am setting up a website using Openlayers and GeoJSON files. When I get the GeoJSON file using the code below it work as expected. url: "./file.geojson", But if I try and use the full domain ...
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1answer
51 views

Which are the Geojson css style properties for mapbox.js?

I try to style a LineString in a Mapbox Map through L.Geojson and all the style properties I could find are: fillColor, colour, weight, opacity. Does anyone know if there is something else? For ...
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1answer
87 views

Reproject GeoJSON from EPSG:3857 to EPSG:4326

I am using this reproject tool to convert a GeoJSON point from EPSG:3857 to EPSG:4326. My command fails. What am I doing wrong? $ echo ...
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1answer
139 views

Is there a typescript interface for “GeoXML” formats (such as WFS and WMS) apart from GeoJSON?

I want to work with JSON behind TypeScript interfaces but I'm not sure what the spec should be outside of GeoJSON. Is there a spec which is more encompassing then GeoJSON and includes things like a ...
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1answer
133 views

Why do Shapefiles and GeoJSON behave differently in GDAL Python?

I have a test.shp. I loop over the file, buffer the features, and write the buffers to a new file. I tested writing the buffers to a Shapefile and to a GeoJSON. If I try to use the new buffer layer ...
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1answer
72 views

Access attributes on featureCollection

The geoJSON-String: { "type": "FeatureCollection", "features": [ { "type": "Feature", "properties": {"title": "Standort 1 "}, "geometry": { "type": "Point", ...
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1answer
2k views

How can I change the style of marker in leaflet (from GeoJSON)?

I'm serving GeoJSON to leaflet and by default it get a blue icon marker. I'm trying to change the style so I'll be able to use the feature properties as part of the style , but no matter what I do , ...