GeoJSON is a geospatial data interchange format based on JavaScript Object Notation (JSON)

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Convert Leaflet WMS layer to Leaflet GeoJSON layer

Using the Leaflet API I am adding a WMS layer through the L.tilelayer.WMS feature. This feature includes only a certain amount of options such as 'layers','crs','style' etc. Through the Leaflet ...
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3answers
530 views

How to load geojson from geoserver to define a variable in leaflet?

How can I load a geojson file from geoserver in leafletjs? There are lot of suggestions out there, but none of them work for me. Currently my app loads a js file from the server that starts like this:...
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1answer
238 views

Openlayers 3.5.0: Problems with GeoJSON in IE11

I seem to have a problem with loading a geojson-file as source for a layer in IE11 using openlayers 3.5.0. IE11 throws an error without any description. The problem seems to occur when the geojson is ...
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2answers
369 views

How to reduce large dataset for processing by Tippecanoe and upload to Mapbox

I'm a masters student at the University of Washington without any background in geo, so if this question seems naive or unclear, I apologize. Please let me know if I can add any information for ...
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629 views

OL3 bbox strategy on geoJSON vector layer?

I try to improve my current OL-3 webmap to load less payload using the bbox strategy. So I altered my code similar to the bbox examples out there: overlayGroup.getLayers().extend([ new ol.layer....
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1answer
383 views

parse geoJSON using bounding box and Openlayers 3

I have used Openlayers 3 to give me a bounding box extent and then make a WFS call to Geoserver using those extents and returning a geoJSON and it has worked perfectly, giving me the features within ...
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1answer
42 views

OpenLayers doesn't display US Census-based GeoJSON Layer

I'm getting started with OpenLayers and all was going well until I tried to use my own GeoJSON file. I started with the Cartographic Boundary Shapefiles - Counties from the Census website, loaded it ...
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98 views

Where can I find world map shapefiles/GEOJSONs/KMLs for 1950-2015?

I'm looking for world maps showing countries from 1950-2015. Are there shapefiles, KMLs or GEOJSON files of these?
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1answer
37 views

use a global geoJson layer in leaflet

i´m using getJSON to draw points in leaflet, this is the code: function cargarpapes(movibles){ $.getJSON("papeleras1.php", function(data) { papesjson = L.geoJson(data, { ...
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1answer
236 views

Is there any method to retrieve SQL queries into a GeoJSON file using JSP?

I want to display the contents of my PostGIS database of various shape-files in leaflet pop-up dynamically. I know there are static methods available that retrieves attributes. But I need to by ...
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1answer
678 views

Leaflet map - custom markers from CSV and referring to CSV / GeoJSON marker properties?

I run a non-profit online resource called the Megalithic Portal and have created a Leaflet map that uses Leaflet.geoCSV to load in points from a CSV file github.com/joker-x/Leaflet.geoCSV To see ...
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707 views

GeoJson and D3.js multipolygon

I have this geometric shape file, so no map of a city. I store the two Shapefiles in a GIS database as a geometric form. Now, I want to visualize the geojson data. I created the GeoJson data ...
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51 views

Cannot draw geometery on WorldWind

I'm trying to draw my geometery on worldwind but it keeps saying WARNING: Unspecified coordinate system and draws a default blue line in the middle of nowhere. The procedure is that I populate ...
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1answer
188 views

Function to merge geojson and csv data in R

I have been using merge() to merge my geojson file with csv data in R. My codes are as follows: map@data <- merge(map@data, csvdata, by.x="ID", by.y="ID") However, after exporting the geojson ...
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2answers
943 views

How to store a drawn feature in OpenLayers?

I have found a draw tool in OpenLayers-3 which allows us to draw on a map (see http://openlayers.org/en/v3.2.0/examples/draw-features.html). Is there an API in openlayers to store the drawn feature in ...
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1answer
78 views

How to update an existing GeoJSON with Fiona

With the code below I can create a new GeoJSON and add data to it: data =[(LINESTRING (-98.98234 19.38234, -98.990341 19.342345, -98.992449 19.378621, -98.991299 19.378233, -98.992349999 19.377381), ...
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1answer
159 views

Using CartoDB to change projection of maps - then exporting as SVG

This seems like a fairly simple question, but I've looked everywhere for the answer and can't find it. I've imported geoJSON UK constituency data into CartoDB and it looks great. I now want to export ...
2
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1answer
315 views

How to efficiently use a Postgres DB with Python

I have a Postgres DB with a lot of lines that are too long and so now I want to split those lines into smaller ones. This is why I started writing a little python script for that job. Basically it ...
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1answer
544 views

How can I export a GeoJSON file from R?

The write. function allows one to export a JSON file, but it does not seem to work for a GeoJSON file. This is the code i ran: write(map,"Map Layer2.GeoJSON") and this was the error produced: ...
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1answer
68 views

How to Convert db.ListProperty(GeoPt) to GeoJSON Polygon

My Python Google App Engine (no tag?) app has a datastore model of an Area of Interest, simplified as import geojson class AreaOfInterest(db.Model): name = db.StringProperty(required=True) #...
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1answer
989 views

Loading GeoJSON via AJAX after adding Layer to OpenLayers 3?

I'm trying to add a new GeoJSON layer to OpenLayers 3 that I have to fetch via AJAX. I want the user to click on a list of layers, have it add an empty vector layer, and then make an AJAX call and ...
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1answer
183 views

How to protect the loaded json file name and location using html5 and javascript?

The data of markers (not the map) is stored in a json/csv/js file. We want to show all data as markers on the map. But how to protect the raw data file from public access? Following the example on ...
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1answer
238 views

extend extent of geoJSON layer - Leaflet

I am zooming to the extent of a set of geoJSONs collected in a FeatureGroup with this call: map.fitBounds(myFeatureGroup.getBounds()); ...I would like to extend the extent a bit; as it is the ...
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1answer
2k views

Load external geojson file into leaflet map

Have studies this thread but not getting desired result. My index.html looks like this: <!DOCTYPE html> <html> <head> <meta charset=utf-8 /> <title>GeoJSON ...
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204 views

Efficient way to read large GeoJSON data using Openlayers API

For now this is how I read GeoJSON data: $.ajax({ url: "flood_map/", type: "GET", dataType: "json", async: !0, beforeSend: function () { $("#...
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1answer
1k views

how to draw a polygon in leaflet and add it to geojson file

I am working on a small project with leaflet. the goal of the project is to show a geojson file and updating it dynamicaly from the window of the web site. I have imported the geojson file to the map. ...
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1answer
82 views

Alternatives to GeoRSS for time-sensitive point data

I'm looking for a suitable data format for various organisations to publish point data with a recent time component, like events, road closures, etc. GeoRSS is the obvious candidate but: It's XML, ...
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2answers
649 views

How to create/obtain district data for Singapore? [closed]

I am newbie in GIS and have started using QGIS. I am hoping to map all districts of Singapore and create a Shapefile and get GeoJSON details for all districts. I am not able to find that currently. ...
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143 views

Leaflet application with geojson IE9 error

Help.. My applications doesn't work in IE10 or IE9. It's fine in IE11, FF, Chrome, Safari etc. The error must be in the geojson featurelayer function, since removing it (row102-151) fixes the problem....
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1answer
1k views

Submit a form from within a leaflet popup?

I want to submit a form from within a leaflet popup simply using javascript and geojson. I am essentially collecting attribute information in the form and then I want to process the information into ...
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1answer
218 views

How to obtain the shape or width of a road in GeoJson

I'm new to openstreet maps and the geojson format. I'm drawing buildings and roads using GeoJson. A Building is represented as a Polygon, thus i can create the proper geometry as needed, but a Road ...
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110 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 ...
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2answers
842 views

Read (GEO)JSON file from web service using FME Desktop

I have a webmap of bike stations and there is a json service for these stations behind the map. It is possible to provide this URL as the source dataset, using FME Desktop? Does FME Desktop support ...
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2answers
630 views

Leafletjs : combine location data in geoJSON/KML/GPX with other information in CSV through key field

I've been able to load CSV having lat-long co-ordinates into leaflet using this useful solution. Looking for ways to cross-link co-ordinates from a different source and data from another. Describing ...
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0answers
131 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: {"type":"FeatureCollection","features":[{"type":"Feature","...
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82 views

Javascript - Problems getting GeoJSON from Geoserver

I already read other posts regarding this topic. However, I cannot make it run. This is what I have: var geoJsonUrl = "http://localhost:8080/geoserver/nyc_roads/ows?service=WFS&version=1.0.0&...
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3answers
237 views

GeoJSON Rendering in Leaflet

I have published a wms using the QGIS Cloud and on top of it I am overlaying the same data (countries of Europe), using GeoJSON. Have a look at an example here: http://jsfiddle.net/j21kh7ao/ At a low ...
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275 views

Any other FuseSearch.js examples in Leaflet?

Have been researching about using FuseSearch and using this example. The only difference is that am using polygons.Its working well but not highlighting polygons on results click. Has anyone done a ...
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3answers
546 views

FME and elasticsearch

We are developing a system to disseminate information about roadkills. The source data comes from three different databases. We have set up a FME project which pulls geojson from the source databases, ...
0
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1answer
109 views

How to export point geomtery geojson from QGIS?

I want export geojson (from shapefile), for leaflet project. But QGIS 2.6 exported geojson is multipoint geometry(leaflet doesn't read that), so its way to export point geometry geojson from QGIS?
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312 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 ...
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43 views

Is there a website that has collection of GeoJSONs? [closed]

I specifically look for GeoJSON for all dry lands in the globe.
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How get geoJson layer whit geoTools? [duplicate]

I have a class in java: "MyPoint" Class: @Entity @Table(name="MyPoint") public class MyPoint{ @id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long Id; @Column ...
2
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1answer
216 views

GeoDjango Setup: Python 'GDALAllRegister' Attribute Error

I am trying to setup Geodjango 1.8 in a virtualenv with Python 2.7.9 (Win32). I have installed and setup Postgres/PostGis and have my Path setup to my OSGeo4W directory. I have also installed the ...
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1answer
183 views

Batch Edit GeoJSON Markers with Mapbox.js

I cannot figure out how to style all feature points from a local GeoJson file at once using the Mapbox.js. My GeoJSON file has roughly 500 points. I could go through each point in the GeoJSON file and ...
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1answer
895 views

Dump a GeoJSON FeatureCollection from Spatialite query with Python

Given a Spatialite database, holding a table with a geometry column and some other attribute columns. I want to query that table in a Python script and get a GeoJSON FeatureCollection string in return ...
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1answer
444 views

Querying GeoJSON polygons from Django models in Leaflet?

Am developing an application in GeoDjango and using Leaflet to show my data.I have loaded my data successfully into the map and added a sidebar where I have my textboxes to input values and a search ...
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1answer
220 views

How to add hyperlink in geojson popup in Leaflet?

I am trying to add a geojson layer with interactive functionality to my leaflet map. I am mostly using this (dated)blog: http://palewi.re/posts/2012/03/26/leaflet-recipe-hover-events-features-and-...
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1answer
34 views

Geojson mapevent second mouse click

I am trying to add a geojson layer with interactive functionality to my leaflet map. I am mostly using this (dated)blog: http://palewi.re/posts/2012/03/26/leaflet-recipe-hover-events-features-and-...
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3answers
174 views

How to delete a feature from a GeoJSON with Python

Given a GeoJSON like following: { "type": "FeatureCollection", "features": [ { "type": "Feature", "properties": { "city": "city1" }, "geometry": { "...