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

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1answer
430 views

OpenLayers - markers not displayed

I just started worrking with OpenLayers and hava a problem with markers that don´t appear. I have no idea where is the problem. <script type="text/javascript"> function init() { var center ...
2
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1answer
78 views

Why aren't my basemap tiles showing up via ArcGIS Server

I have a leaflet js script referencing the ArcGIS server imagery api. The code worked fine up until about two days ago. Now when I click on the layer there's a gray background. I am using my local ...
5
votes
1answer
132 views

Making a 3D map with shapefiles, lidar and aerial image data

I want to try to make a simple 3D map for a small area (10 square miles) with some housing, some roads and some vegetation on it. My geodata is as follows: shapes with houses/roads/vegetation. ...
2
votes
1answer
575 views

How to display labels - created using LabelLayer only at certain scales

I am using ESRI Javascript 3.7 framework to develop a map application, in it I am trying to display labels created using LabelLayer at certain scales only, say from 1:1 to 1:500 scale only, how can I ...
0
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1answer
206 views

How can I extend L.mapbox.legendControl?

I'm trying to override legendControl.onAdd, but I can't seem to do it early enough. I can override the other functions, since they're fired after map init, but I can't seem to change the prototype? ...
1
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1answer
138 views

How to call Leaflet FullScreen plug-in from code

I'm currently using Leaflet along with leaflet.fullscreen to provide a full screen map. I've got it working nicely with the button but I can't work out how to "call" the function manually from my ...
1
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1answer
582 views

How to improve speed of rendering polygons from Postgis in Leaflet?

I want to improve speed of rendering polygons in my Leaflet map. Polygons are stored in Postgis, and are rendered with select query with bbox. I wonder can I cache somehow those polygons? I read ...
0
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1answer
539 views

Call function inside dojo.ready

I have code ArcGIS Javascript like this: <script type="text/javascript"> require(["dojo/ready", "dgrid/OnDemandGrid", "dgrid/Selection", "dojo/store/Memory", ...
2
votes
1answer
492 views

SVG control not visible on top of Leaflet.js

I'm using Leaflet 0.7.1 and want to draw a radial menu (like openstreetmap's iD editor) on top using d3. Some examples I found use Leaflet's overlayPane to append the svg element to: var ...
0
votes
1answer
96 views

Is there any Map event fired when map is loaded completely when we device is oriented from portrait to landscape mode?

We are using ESRI ArcGIS JavaScript API in one of our Mobile web app. When map is loaded first time, Onload event is fired. But when we change orientation from Portrait to Landscape, OnLoad event does ...
0
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1answer
521 views

Filter Vector Layer Features

I'm using OpenLayers - 2.11,GeoServer 2.13, ExtJS 3.4, and Java for developing GIS based web applications. I have added some point features in one vector layer. It has id, name, address, etc. Can I ...
1
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1answer
344 views

ArcGIS Javascript Map loads but doesn't display

I just started creating a very simple mobile GIS app using ArcGIS Javascript API, and I have experiencing a very peculiar issue. When the app loads, the basemap is white (not visible) until you use ...
1
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3answers
2k views

How to add png image with esri javascript api MapImageLayer Class?

I have a png image that we host that I need to resize and overlay onto a map at specific gps coordinates. Would this be an image class? I can't seem to find any examples that match up with my needs. I ...
0
votes
1answer
52 views

How do I change my title of app?

We have a map with streets as basemap. We have been trying unsuccessfully, for the last two days to change the basemap to tiled layer with no success at all. I am posting a snippet because script is ...
1
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0answers
986 views

openlayers 2.13.1 vector layer and CQL does not work in IE11

I have implemented a search functionality for a vector layer in openlayers 2.13.1. I use CQL. I take the values from an html form and I use javascript to pass them to a CQL filter and execute it. ...
1
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2answers
670 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 ...
2
votes
1answer
15k 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 ...
0
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2answers
1k views

A script on this page may be busy, or it may have stopped responding

I'm using OpenLayers - 2.11,GeoServer 2.13, ExtJS 3.4, and Java for developing GIS based web applications. Recently i'm getting below error message in my application "A script on this page may be ...
0
votes
1answer
122 views

TabContainer ArcGIS API for JavaScript

I am a novice programmer, but I know enough to be dangerous. Here's my issue and hopefully someone knows the answer. I am developing an application with 4 tabs on the left and a map from ArcGIS ...
3
votes
1answer
3k views

add marker to map from list of coordinates

Forgive me if this question has an incredibly obvious answer. I'm very new to ESRI and I'm trying to add markers to my map via gps coordinates. I have not found an example that does something this ...
1
vote
1answer
173 views

GWT-OpenLayers - BoundingBox selection

I'm searching for a way to get the bounds of a bounding box a user can drag on a map with gwt-openlayers but i can't figure out how to translate the javascript stuff to the javaside of the wrapper ...
-1
votes
1answer
511 views

My wms vector data overlay on openlayer vmap work fine but on osm img is not rendering

i am try to overlay my India roads vector over an openlayer (http://vmap0.tiles.osgeo.org/wms/vmap0) vmap work fine.but i want to do the sam task over osm(open street map), i am trying many different ...
0
votes
1answer
220 views

Chorpleth Data visualization in Mapbox Leaflet API

I am using Mapbox Leaflet API. I have followed the following tutorial of Mapbox. https://www.mapbox.com/mapbox.js/ (Please change to Data visualization Tab) Onclick its zooming on state and hover ...
0
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1answer
148 views

Visualizing information when click in polygon‏ - Spatial join

I am new to cartodb, right now I am trying to do something similar to the cartodb tutorial: Create your first map with CartoDB.js, but with polygons using my own map. For example: I did a spatial ...
6
votes
1answer
2k views

Zoom further in with leaflet javascirpt API

We're using the leaflet JavaScript API with a tile layer which supports zoom level up to 19. I'd like users to be able to zoom further even if the tiles blur as they have to place markers to a high ...
0
votes
1answer
116 views

What must be learned to build 3D web map? [closed]

I wish to build a 3D web map based on Silverlight or JavaScript. I cannot build 3D in Silverlight. What I should do then? Should I learn "Balder" or OpenGL or what? I must do it before 09/2014. Can ...
2
votes
1answer
211 views

How to use right-click to finish drawing a Polygon in OpenLayers?

I'm using OpenLayers 2.13 and the DrawFeature control. By Default, the Polygon is completed, when you double click. Some of our clients are requesting that we allow the mouse right-click, to finish ...
1
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0answers
26 views

How to hide infoWindow while using measure tool and showing it back after using it ArcGis JavaScript API [duplicate]

I have an infoWinfow set on the click event of the map. I want to disable this event when I'm using the measurement tool and then enable it back after the measurement tool is used. So far I've done ...
2
votes
2answers
1k views

CartoDB- Passing selected features bounds to map center parameter (Zoom to selected features)

Looking to build a light-weight viewer for some data we have hosted on CartoDB. I'm looking to have a user input their address into an input, pass a query to CartoDB and have the map zoom/pan to the ...
2
votes
1answer
2k 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
107 views

esri map popup problem [closed]

My map works fine. Popup works fine. For some reason, the bottom of the popup window has some layout issues. I have all the resources included. script: dojo.require("esri.map"); ...
1
vote
3answers
2k views

How to create working Hyperlinks in OnDemandGrid Cells

I'm creating a simple ArcGIS application that shows a table of data from a feature layer, one of which is a URL string. I'd like to make that string be a clickable hyperlink. Is this possible and if ...
2
votes
0answers
507 views

Leaflet Event Craziness: jQuery click events don't propagate to L.DomEvents

I noticed that calling .click() on jQuery selected DOM elements in Leaflet ( such as anchor icons ) will not do anything -- the click event isn't propagated to the events created with L.DomEvents. For ...
2
votes
1answer
253 views

How to join USDA SSURGO soil table data to features in QGIS?

I am trying to make a soil map using QGIS. The only problem is that I cannot join table data to features in QGIS. In ArcGIS for Desktop you just open the folder and then join the tabular table ...
2
votes
3answers
1k views

Simple javascript viewer for ArcGIS Server data

I would like a simple javascript viewer which will allow end users to do the following in their browser: Add layers from arcgis server by clicking an "add data" button See attributes with an info ...
1
vote
1answer
1k views

Export KML from points plotted in javascript Google Maps API?

I want to export a KML file from points plotted in Javascript using the Google Maps API. Is there a way to do this? The user logs in and checks Google Maps, then plot points on the map and finally ...
1
vote
1answer
532 views

Openlayers Vector Layers eventListeners: how to specify different data without defining multiple layers

I have a map. It has two origins, and two destinations. The code for one origin is here: vectors_origin = new OpenLayers.Layer.Vector("Origin", { eventListeners:{ ...
6
votes
1answer
1k views

Using Tilestache and Leaflet To Display Rasters In Native Projection

I have a collection of old Idaho state highway maps in GeoTiff format. The projection that these maps have been georeferenced in is a transverse mercator projection, called IDTM83 (Idaho Transverse ...
2
votes
1answer
5k views

Go to the URL when clicked on Leaflet marker

I want to implement marker click event so when user click on marker it goes to url. Url is written inside an array (a[3]). However, this is my code which doesn't work, it always goes to the link of ...
2
votes
2answers
1k views

json to shapefile in javascript

I know, there are some libraries to convert .shp to .json even with javascript, but haven't found a way to convert .json back into .shp that could be implemented in web enviroment. Do you know or ...
5
votes
5answers
3k 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 ...
1
vote
1answer
167 views

Openlayers: Making the map move with moving vector layer (airplane) on map

So currently I have a map that has some plane data. There is a setInterval function that updates the plane data every 5 seconds, making the plane move from point to point. That is working well. ...
1
vote
0answers
2k views

Google map did not update new geolocation when I moved the marker to new position [closed]

This is my google map code. I'm trying to update new latitude and longitude when i moved the existing marker to new position. But I don't understand why the following google map code is not updating ...
2
votes
1answer
808 views

How to flash a graphic in JSAPI using AMD

With the code below I was hoping to flash the selected polyline, however no success. function flashResults(featureSet) { alert("flash"); //remove all graphics on the maps graphics layer ...
1
vote
2answers
4k 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, ...
2
votes
0answers
462 views

How to get Google Street View panoramas on the same street as the requested address?

The Google Maps API geocodes an address to a point. I can use that point to find the nearest panorama (street view) image. I can then determine the heading based on the two points and show the ...
4
votes
5answers
4k views

What web mapping libraries are suitable for indoor maps?

I am looking for a custom mapping library but not to display an actual geographical area but to display a custom floor-plan. I have been looking for a while but most of the solutions that I found are ...
0
votes
2answers
765 views

Moving ArcGIS JSAPI Basemap Gallery Widget down 10px when opened

How can I move the Basemap gallery 10px down from its original position when it's opened. The basemap gallery sample, I am referring can be found here: ...
1
vote
1answer
324 views

Using ECQL filter on user form using GeoServer and OpenLayers

I know this is more of a JS question (skills of which I am inadequately inept) but it is using OpenLayers and GeoServer. I am trying to apply a filter with a user form on a Layer, but am not sure ...
1
vote
0answers
726 views

How should I make use of railway routes from Google Maps API?

I have a specific requirement wherein I have to display or highlight only railway stations in the map rather than the whole map. How can this be achieved? This is the code I tried: <html> ...