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

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416 views

Displaying more than one layer from GeoServer using OpenLayers?

How can I add additional data layers to this code? I tried using "map = new OpenLayers.Map('map', options);" again and set up a tiled layer for buildings exactly as it has been done for roads but not ...
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1answer
136 views

How do I get ArcGIS tiles to display a single layer when multiple layers are available?

I am using Bing Maps v7 to display layers from an ArcGIS server. The server displays multiple layers as one, but I would like to only display a single layer. Suppose a map service has the layers: ...
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vote
1answer
443 views

OpenLayers map with Nominatim lookup function not working

I am trying to create a simple map with a search function, my minimal example is here: http://jsfiddle.net/TimLucas/vbaupe30/4/ For some reason the coords transformation after the script has received ...
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0answers
73 views

Connection to Shapefiles and PostGIS

I have this HTML (see below) code, I want to connect to PostGIS to the Shapefiles I have loaded, but I can't find where and how to accomplish that. I want my map to display this Shapefiles when the ...
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1answer
462 views

Does an event get fired after a Layer has finished rendering in Openlayers 3?

I am rendering about 27000 Markers in different layers on a mapview. Everything works fine on fast devices. I have a problem on older devices (like the iPad3). When i hide one layer and set another ...
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1answer
101 views

How to toggle selected features by clicking on them in OpenLayers?

This is my website for test: http://www.cv.nctu.edu.tw/shapefile-js-openlayers/ol_simple.html This is my expected result:http://www.cv.nctu.edu.tw/shapefile-js-openlayers/test.html I want to try ...
2
votes
1answer
2k views

Why my Shapefile is not loaded into OpenLayers?

This is my website for test: http://www.cv.nctu.edu.tw/tonywang/shapefile-js-openlayers/ol_simple.html I want to put my Shapefile in OpenLayers. I found an example at https://github.com/mattwigway/...
3
votes
1answer
172 views

Define a circle extent using the circle tool - arcgis javascript api

I have the following script for drawing a circle and I want to limit the user to a predefined radius: $('#circle').click(function () { clearPreviousSearch(); map.disableMapNavigation();...
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0answers
135 views

How do I determine programmatically what values to add to the proj4js constructor for a CRS or SRS such that I can iteratively render proper overlays

I think this is primarily a GIS based question as far as for example: var crs = L.CRS.proj4js('EPSG:2154', '+proj=lcc +lat_1=49 +lat_2=44 +lat_0=46.5 +lon_0=3 +x_0=700000 +y_0=...
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2answers
1k views

Open Layers Label styling (font size)

I have a polygon dataset that I am symbolizing in OpenLayers using a context to determine the correct color, and also a label for each polygon that I want to alter depending on the zoom level. But ...
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0answers
144 views

Limit Nominatim results tp specific country

I want to limit the search in Nominatim to a specific country and was trying this code: mapPanel = new GeoExt.MapPanel({ border: true, region: "center", map: map, zoom: 7, layers:...
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43 views

Prevent rendering of a layer until time definition is applied

I want to add layers to a map, with some criteria. Before the layer is drawn, I want to a set a time definition on the client-side to limit the data being rendered. I've tried setting the time ...
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0answers
3k views

Waiting on AJAX result in main JS function

So .... my main init()Javascript function has these 3 lines: sarea = GetArea(Uname,UIDfield,Table, document.getElementById("Source").value); darea = GetArea(Uname,UIDfield,Table, document....
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2answers
121 views

Including js file in openlayer.js file

I have this code for showing markers on map: function addUserLayerCSV(){ layer1 = new OpenLayers.Layer.Vector("CSV", { projection: epsg6316, strategies: [new OpenLayers....
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1answer
558 views

Finding the closest facility in a feature layer from a webmap

I have created a webmap on which a feature layer is displayed and I'm trying to find the closest facility when the user clicks on the map. Based on Find closest facilities in the Javascript API ...
3
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0answers
60 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 ...
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1answer
76 views

Automatically select the default feature in TemplatePicker ARCGIS Javascript

I am using this example to implement the editing on my map. Editing Without Widget ARCGIS Javascript The code employs a templatepicker which uses the layers on the map to show the features which can ...
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1answer
170 views

CartoDB SQL and returning values

Right I've got this JS function function AreaCompare(sql, UIDfield, Geogname, Table, sourceName, sourceID, destName, destID){ CompareObj = {}; CompareObj.sName = sourceName; ...
2
votes
2answers
218 views

Create a layer selector when making a map at runtime for CartoDB

Using the same theory to create a search box at runtime, (such as here), I wrote this code: var l = cdb.vis.Overlay.create('layer_selector', map.viz, {}) l.show(); $('#map').append(l.render().el); ...
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1answer
714 views

insert update delete wfs layer to gesoerver on openlayers3

i am using geoserver 2.5.2 and openlayers3 i can show geojson wfs data from geoserver with geojson and edit with interactions on map (function () { showData= function () { var format = ...
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1answer
5k views

Openlayers get coordinates of a circle vector after draw

I have made a openlayers map. I have made two features on the map. Navigate DRAW POLYGON I have made 40 sides to my polygon which turns out to be a circle. After I have drawn my circle I want to ...
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0answers
45 views

Get latlong at a distance on a path

I have 2 decimal point in lat/lon. I want to divide the line drawn by lat/lon into parts each at a specified distance, lets say 'x' -- all except the last segment will be of length x -- and I need the ...
2
votes
2answers
1k views

Getting value coded of domain from map layer with arcgis javascript api

I'm trying to read domain values on a map, how to achieve this objective in arcgis javascript api? any help?
2
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4answers
4k views

Formula to Check Latitude & Longitude is within Area without Google Maps Api

I got this Example Map SampleMap: http://techinfo.co.id/test/map.php I make Boundary Polygon shape , -6.875165174925262, 107.56293296813965 -6.882663904407988, 107.66730308532715 -6.980818117491586,...
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1answer
136 views

The ordering of layers with CartoDB/Leaflet

Just want to get a bit of clarity about this query from before: Layer order in CartoDB I have a map with a Basemap and I want to draw points between features based on layer featureclicks, The good ...
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1answer
836 views

Setting properties of geoJSON in OpenLayers

I have a map with layers that have similar attributes. I want to add a function that when you select a feature in a layer, it searches for a feature with similar properties in another feature (in this ...
0
votes
1answer
221 views

esri JavaScript Spatial Analysis Services: Select appropriate helper services url from Portal for requested operation

About 6 months ago I built a prototype JavaScript app which uses the spatial analysis service; FindNearest. Find Nearest. I've posted this on GeoNet but haven't had much joy there. The app ran fine ...
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1answer
168 views

set definition expression based on slider values

Using the Esri JavaScript API I want to control the set.DefinitionExpression values based on a user controlled range slider. The data is loaded from REST as ondemand using: var POP_Total = new ...
0
votes
3answers
586 views

Measure Widget Issue - ArcGIS Javascript API 3.11

I am having an issue with the Measure Widget in my application after updating to 3.11. The widget does not appear after the application loads. I have checked my code and do not see an issue, also ...
0
votes
1answer
149 views

Configurable Map Viewer (CMV) - average the values of the points

I have been able to select points and find the sum of the points. What I really need is to average the points. Here is my (acquired from someone else) code for finding the sum. define([ 'dojo/_base/...
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0answers
141 views

API for Java and JavaScript app integration

Are there any APIs to make calls or integrate JavaScript functions to a Java written application? I have come across Rhino's liveconnect.js, but this is uncharted territory for me, and would like a ...
3
votes
2answers
660 views

Javascript API: How can I change renderer on the fly with feature layer hosted on ArcGIS Online?

I am new to Javascript and somewhat new to GIS (especially web applications of GIS). I'm trying to understand how I can have a drop down menu or html buttons to change which data is rendered in my map....
2
votes
1answer
569 views

SQL query as part of featureClick in CartoDB.js

I am a complete novice at both Javascript and SQL so am learning as I'm going with this! I have made a webpage that shows a map with a layer of points on the left hand side of the page. What I want ...
2
votes
1answer
688 views

Projection Transform in OpenLayers3

I am trying to transform a GeoJSON object of a certain transformation (EPSG:28992) into my current map coordinate system (EPSG:4326). I have been trying to do a couple of things but none seem to work. ...
1
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1answer
164 views

Configurable Map Viewer (CMV) - select by drawing polygon around points, then average the values of the points

I have seen this question and have tried the code suggested: Adapting ESRI ArcGIS API for JavaScript Feature Layer With Selection sample for use in Configurable Map Viewer (CMV) But I have been ...
2
votes
1answer
3k views

Leaflet.js add/remove control from Map

I am attempting to combine two fine plugins Leaflet Easy Button and Leaflet Routing Machineand i can't quite get it to work. what I want seems simple enough, I would like to have a button that when ...
2
votes
1answer
56 views

Toggle Layers in OpenLayers does not work

I am trying to make a map in which I can toggle layers on and off in the navigation bar. A simple version of my code is in the following JSFiddle: http://jsfiddle.net/TimLucas/3cqsmc2L/ If you click ...
1
vote
1answer
326 views

Can I plot points on a map using JSON data from a Node.js API?

I am new to the arcGIS JavaScript API. I have a Node API that is providing geographical information in JSON. I have google'd for examples and searched for solutions on this web site. Can anyone ...
0
votes
1answer
168 views

Converting VBScript to JavaScript for labelling in ArcGIS Desktop?

I have a VB script used by ArcGIS 10.2 for Desktop to label different types of streets based on vales present in a specific field. I am a novice at Python but VB and JavaScript are beyond me. I need ...
2
votes
1answer
202 views

Choosing a platform for developing opensource GIS web application.

I am from a non programming background. I started learning GIS opensource web applications from last 3 moths. Now I am using only notepad++ for writing codes and I am familiar with javascript, HTML ...
1
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1answer
142 views

What would prevent ESRI JSAPI AMD modules from being cached?

I am using AMD style in the ESRI Javascript API (along with the esri application boilerplate: https://github.com/Esri/application-boilerplate-js). For some reason, the AMD modules from the js.arcgis....
2
votes
0answers
128 views

How to adapt layerswitcher to include listboxs

For my project I needed something that allowed the user to change the application´s layers and the best solution I found was this one layer switcher since openlayers 3 does not support a layerswitcher ...
4
votes
1answer
2k views

How to draw Geodesic lines in Openlayers 2?

Hi i want to display multiple lines between two coordinates. i will pass no of lines and color of the line, it has to display like below image. please see the below image.this is my previous post
5
votes
2answers
583 views

ArcGIS Javascript API on Wordpress 4.1

SOLUTION: For everyone interested: turned out the solution was moving all files that use DoJo beneath the jQuery UI files, so that jQuery UI is fully loaded before any DoJo stuff loads. Moved them all ...
1
vote
1answer
1k views

Changing list-item css class using ng-class when mousing over Leaflet Map Markers

I've got a doozy of an ng-class problem. So I have an app with a map/markers on the right and a list-item menu on the left with info about the markers (like Yelp or Foursquare). With some of my ...
2
votes
1answer
570 views

OpenLayers3: setCenter seems not to work in jsfiddle

I'm trying to replicate an example from the OpenLayer Examples, specifically this one: http://openlayers.org/en/v3.0.0/examples/animation.html The problem is that in my jsfiddle I cannot get all the ...
0
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0answers
104 views

Getting coordinates perpendicular to AB

I noticed that Google Mapmaker has a function that when you hold shift when drawing a shape you can see the perpendicular line. I want to recreate this function to use in the google maps api v3. So ...
2
votes
1answer
449 views

Time Slider in CartoDB

I once again have a question regarding this map project I'm working on. I'm trying to add a time slider to my CartoDB map, and the slider appears, but instead of displaying the correct dates and the ...
1
vote
1answer
69 views

Is it possible using JavaScript and cartodb.js to get the layer's total amount of visible data in a certain moment?

I am working with a torque layer and I would like to know for each moment the amount of data points shown in the visualization.
3
votes
1answer
548 views

How to get/pass token with ajax call to secured ArcGIS REST Service

I have a web map application that was written in HTML & JavaScript (using the ArcGIS JavaScript API). It desplays a few services that reside on an ArcGIS Server (10.2). It also has a custom legend ...