JavaScript is a prototype-based, object-oriented scripting language that is dynamic, weakly typed and has first-class functions.

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4
votes
5answers
166 views

3D perspective on maps in Leaflet, CartoDB?

Are there any JS library out there that would render normal, flat maps (like Leaflet) into a perspective map like this one, on the web: Also, anyone seen anything that could turn CartoDB data into ...
1
vote
1answer
16 views

Opacity contrl for mapbox map with several layers

This is an example of how opacity can be changed for a Mapbox.JS map: https://www.mapbox.com/mapbox.js/example/v1.0.0/opacity/ The example shows only one layer used. With barely any experience in ...
2
votes
1answer
210 views

How do I set the fillcolor of polygons in Leaflet.js dynamically?

I'm using the interactive chloropath example for leaflet.js I figured out how to make each of my polygons add a running tally of values to the bottom of the page after each polygon is clicked. Upon ...
0
votes
1answer
23 views

get and change style property openlayers

i need to change the property of some style after its created, and i need to change it with knowing only the string of the property name. i am getting string like "fillColor" and value like "blue", ...
0
votes
0answers
5 views

problem login geoexplorer - redirect IP

I have problems when I want to log the administrative user through GeoExplorer when geoserver is running on a server with public ip but redirection to a private ip. GeoExplorer takes too long to load ...
1
vote
1answer
81 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 ...
0
votes
0answers
9 views

Customize LabelLayer extent based on density/location using ArcGIS JavaScript API

I'm using a LabelLayer that can be seen only within a certain minScale - maxScale window. I'm trying to display labels of census tract IDs within Illinois, and the difference in label density between ...
0
votes
1answer
77 views

set infoTemplate for various graphics in graphics layer in loop

I am successful at getting an info window pop up on the event click of a marker on a map. Now, what I'm having trouble with is passing unique information for each graphic in the loop to the individual ...
0
votes
0answers
10 views

Openlayers WFS change featureType

I am trying to change wfs featuretype "on the fly" in openlayers. (This method http://dev.openlayers.org/docs/files/OpenLayers/Protocol/WFS/v1-js.html#OpenLayers.Protocol.WFS.v1.setFeatureType) This ...
1
vote
1answer
228 views

ESRI JS API - How to get event object from Draw Toolbar onDrawEnd

I am using the Draw Toolbar in the Esri Javascript API v3.4 and connecting to the onDrawEnd event using aspect.after(drawingToolbar, "onDrawEnd", drawEndHandleFunction, true); I am using the Draw ...
0
votes
1answer
181 views

Display photo in GeoExt popup

I have point feature with name PointPhoto. This feature have attribute: id area PhotoPath Now I am using GeoExt popup to display this attributes, but I cant find a way to display image from ...
0
votes
0answers
12 views

GP clip and ship crash. Any idea?

I have been trying to implement this code for a few weeks but always run into new issues. It seems like everything is working fine now except my clip and ship GP. It always returns the GPerrorFailed ...
0
votes
0answers
8 views

Handling Popups in Leaflet with Overlapping Features

I am new to Leaflet as well as Javascript, and I'm looking for some advice on a basic topic. Currently, I am trying to create a spatial index of library holdings for old topographic maps that people ...
0
votes
2answers
72 views

MapServer: Symbol color is set in mapfile. Is there a way to change it using javascript (ie not in mapfile)?

I have a mapfile where the symbol color is set to blue. In my html I have a hover event that brings a popup when the user puts their cursor over the symbol. Working as intended. Now on that same ...
4
votes
1answer
191 views

How to generate xml for use with geoxml3

I have a kml and shp I would like to convert to an xml to use with geoxml3. How would I go about doing such a thing? the xml I gen should look something like this: <?xml version="1.0" ...
1
vote
2answers
652 views

ESRI proxy page not working properly + CORS + cross domain scripting

I have setup proxy page , i am using jsp version of proxy page.I have setup server url which will point to my java ,when i load the my page which proxy url set in its html i will work fine only in IE ...
0
votes
1answer
25 views

How can i figure out to convert this points to latlong?

I got below data in sql server, Learned that data is collected under zone IIIa considering Lambert Conformal conic projection in India. The data is generated from Spatial Cadastre Software. Also ...
2
votes
2answers
121 views

District border join in Google maps

I am developing a district editor for cities. The idea is that we divide the city into districts. I am using GoogleMaps, but any other js library is acceptible. Problem 1: districts are connected ...
3
votes
1answer
599 views

Trouble with accesing API code: “ReferenceError: esri is not defined”

I am developing a web map application in the ArcGIS API for Javascript. I two have ArcGISDynamicMapServiceLayer layers that I am trying to run a simple query task on. The code I am using works in ...
0
votes
0answers
9 views

How can I use the SLD and SLD_body arguments?

How can I use the SLD and SLD_body arguments of a GetMap request with the mapA.overlayMapTypes.ImageMapType object? var wmsOptions = { alt: "", getTileUrl: function (tile, zoom) { return ...
0
votes
1answer
30 views

register to event in openlayers 3

I have a web application in openlayers and I am starting to rewrite it to openlayers 3. In the application i have some features that i need to delete/move/add/edit the features then to save it to the ...
-3
votes
0answers
23 views

Esri Javascript API Optimization [closed]

I am looking to optimize (compressed version) my esri javascript api with dojo, please guide
1
vote
1answer
153 views

passing geocode results object to another file

I'm using a geocoding plugin (Leafet.GeoSearch) on a map and I'd like the results, being the LatLng point coordinates, etc available as a parameter for GeoServer cql filtered calls. It doesn't seem ...
0
votes
0answers
19 views

Group / animate SVG using .net or javascript

So I'm very new to making animated / interactive maps so I'm not too sure where to start here. Basically I have a world map .SVG which I converted from shapefiles. Each country polygon (or 'path') has ...
0
votes
0answers
23 views

Help needed with query task results to show in dojo Grid?

I am trying to create a search widget where the HTML tempalte of the search is as follows: <div class="gis_SearchDijit"> <div class="formContainer"> <div ...
1
vote
1answer
16 views

Web API for reverse geocoding geographic features

Is there a free web API that can reverse geocode geographic feature names? I'm currently using the Google API, which will return political and street address info, but I would like to return the names ...
0
votes
0answers
14 views

ArcGIS ApplyEdits w/ JavaScript

I'm new to ArcGIS API. In a form, how can you submit data to modify a feature using applyEdits? No map is involved with this. I have a form that populates the editable data with javascript. When the ...
0
votes
1answer
24 views

Select all features close to clicked

I have an openlayers map with more then 20000 features not in wms, only in vector layer. I have a control to select features, but sometimes it's really hard to select, specially the lines, and also ...
0
votes
1answer
542 views

OpenLayers create marker (feature with icon) from WKT

I have a point object WKT. Like this: POINT (25.04568 48.221548). Also I have an icon in my project folder. My goal is to show on a map an icon that represents a feature. Can it be just a normal ...
0
votes
0answers
17 views

openlayers setCenter issue (other posts on this do not solve it)

I can't get map.setCenter to display an OSM layer (via openlayers) centered at my specified coordinates. Instead it defaults to the West Coast of Africa. The zoom level does however work. Both of ...
1
vote
1answer
37 views

CartoDB/Javascript - Layer Selection Buttons help

I'm trying to make my own layer selector (due to the CartoDB one not appearing on mobile devices) and I'm having issues, mainly due to my lack of experience with Javascript. The issue seems to be ...
2
votes
2answers
1k views

Animated lines and line styles in Javascript

I'm using Leaflet library and Mapbox. I need to create animated line from one city to another, slow motion "travelling" from one point to another point. Is that possible in javascript and how? I can ...
1
vote
2answers
498 views

How to prevent automatic new line when labeling point feature class?

I have a point feature class that I am labelling with the string "EXIT" for a majority of points, but some points will be longer, such as "EXIT into Pacific". I wrote a labeling script that will ...
1
vote
1answer
23 views

Add line break to ArcMap 10.2 label expression

How can I add a line break to a jscript label expression? My expression so far looks like this function FindLabel ( [NAME] ) { return [NAME]+'National Forest'; } I would like to add a break after ...
0
votes
1answer
10 views

Decarta - how to refresh map

I am using the Decarta JS API. I am displaying a map with layers. I want to refresh the map and redraw new layers, but I see no way to do this in the documentation. Is there a way to refresh the ...
2
votes
1answer
76 views

Authentication in Geoserver 2.4.x from a web application

I am trying to build a web application using html and javascript from which I want to login to geoserver hosted at: https://weaveprod.ucdp.utah.edu/geoserver/web/ I have written the following code for ...
0
votes
0answers
17 views

ArcGIS JavaScript problem with legend to show attributes

I'm running a geoprocessing task in my webapplication. When the task generated some results i destroy an existing legend and build up a new one that shows the legend for the resulting layers. That is ...
1
vote
1answer
712 views

Uncaught SyntaxError: Unexpected token : when using ajax

I try to call json data from geoserver, but when i try to run it in chrome, it return this following error "Uncaught SyntaxError: Unexpected token :" This is my code, function ...
2
votes
3answers
723 views

How to add a polygon from PostGIS ST_AsGeoJSON into Leaflet?

I try to use the following function to add polygons to my Leaflet map. function polygon(geojson) { alert(geojson); // alert for testing layer = L.geoJson(geojson); layer.addTo(map); } ...
1
vote
0answers
24 views

Multi layer, multi control

I am new to GIS technolgies. I'm working on the final project of my career. I need to have a background map of somewhere on this map I need to create 1 .. N layers in which a particular user can ...
0
votes
0answers
66 views

Acess control allow origin header is present on the request resource. Origin null is therefore not allowed acess

I'm trying to use the openlayers vector class. And the error occurred: Acess control allow origin header is present on the request resource. Origin null is therefore not allowed acess I've put ...
3
votes
0answers
62 views

Editing PostGIS topology in a web browser

I am trying to conceptualize the best process for editing topology from PostGIS in a web browser. Ideally what I would like to accomplish is the loading of a topology (imagine the lower 48 states of ...
0
votes
1answer
18 views

OpenLayers/Leaflet render world borders

I am trying to show all world borders. Either using OpenLayers or Leaflet. World borders are taken from here. This code does not work. What I am doing wrong? var Map = { map: null, layer: null, ...
1
vote
2answers
195 views

How to convert Shapefile to TopoJSON with grouping neighbor shapes by some criteria

I have a shapefile with countries, which I convert to GeoJSON using ogr2ogr and then converting that json to another TopoJSON, using topojson command-line tool. Everything works like charm, but now I ...
1
vote
2answers
542 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, ...
6
votes
3answers
1k views

tiny JS discretization library for choropleth representation

I would like to know if a tiny stat/discretization js library ready to use exists. I do know about the existence of jStat (which I may explore a little bit more thoroughly), and I know that mapfish ...
1
vote
1answer
112 views

Leaflet setView with non lat/long CRS

Is it possible to use setView when using an alternative CRS? var map = L.map('map',{crs: L.CRS.EPSG26915}).setView([4970081,477018], 13); // Returns: Uncaught TypeError: Cannot call method ...
5
votes
1answer
345 views

Why do ArcGIS Desktop 10 HTML popups give JavaScript/HTML Error?

Using ArcMap 10 Desktop HTML Popups. The issue I am having is that the html < select > elements aren't working - you can select it and use the arrow keys to navigate through(up/down) the list but ...
4
votes
5answers
686 views

How to get a Leaflet app with a big GeoJSON file to work on mobile devices?

I have a leaflet app which displays a GeoJSON file as a layer. It works fine in the web browser. On the mobile browser it starts up, but quits after panning around on the map. I think the reason for ...
0
votes
2answers
133 views

Programatically adding popups into OpenLayers map

I'm developing a web service and want to inset multiple popups dynamically to a web page according to the request. What I did was this <script> //injected programmatically var popups=[]; ...