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

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How to reduce the opacity of a Google Maps layer in CartoDB.js

I have a CartoDB.js-App where I load my vis using cartodb.createVis (I do not manually define Leaflet layers). How can I reduce the opacity of the Google Maps base layer? I tried the following, as ...
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12 views

FindTask doesn't work with rest of JavaScript code

I need to add a FindTask to the following code that returns the attributes of the searched in a data grid and selects the data on the map. By modifying the "show find task results in a datagrid" ...
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0answers
12 views

JavaScript: FindTask works but no data appears on map

I need to add a FindTask to the following code that returns the attributes of the searched in a data grid and selects the data on the map. By modifying the "show find task results in a datagrid" ...
2
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1answer
16 views

Make Leaflet Map Background Transparent

How can i make the background of the leaflet map transparent. I see opacity controls from the layers, but not the map background. Should the be changed just with plain CSS? Thanks
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1answer
16 views

Draw arc in Geo map WGS84 coordinate system

im trying to draw an arc in OpenLayers, in non Geo map it works well and here is my code: function calculateArcPointsNonGeo(center, radius,startAngle,endAngle,segments) { var pointList = ...
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23 views

Showing only some points in Feature Layer on ArcGIS.Com WebMap Javascript API

I am looking at creating a webmap which will allow users to place a point either by clicking on a map or selecting a point from a drop down which will then buffer the point. I've done something ...
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0answers
32 views

ArcGIS Circle Buffer

I am stuck, trying to draw a simple circle buffer using ArcGIS. Here is how I set up my base map: dojo.require("esri.map"); dojo.require("esri.tasks.servicearea"); dojo.require("dijit.dijit"); ...
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17 views

Point Cluster Layer not defined

I am trying to do a point cluster layer based on the JSON objects I obtained from database. Here is my JavaScript to plot a point cluster layer: function addClusters() { $.ajax({ url: ...
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1answer
33 views

How to apply weight to Google heatmap?

I am trying to plot a Google heatmap based on the JSON objects returned. Here is my JavaScript: function getHeatMap() { heatLayer = new HeatmapLayer({ config: { "useLocalMaximum": true, ...
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0answers
13 views

How can i find shortest point on edge of a polygon from a point to that polygon (not it's distance ) [duplicate]

Point(x,y) may be inside or outside of the polygon ,shortest distance between polygon ABCDE and point(x,y) is marked as red line ,the intersecting point is Point(m,n) .I need the value of m and n I ...
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3answers
261 views

How can I find closest point on a polygon from a point

I have a point that may be inside or outside of a polygon, I need to find the nearest point on the polygon boundary from the point. Point(x,y) may be inside or outside of the polygon, shortest ...
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1answer
46 views

Using Google Map Spatial Reference to plot HeatMap?

Basically I am trying to plot a Google heatmap based on the JSON objects returned. Here is my JavaScript: function getHeatMap() { var gradient = [ 'rgba(185, 185, 203, 0)', ...
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0answers
43 views

How to simulate events from Openlayers 2?

I am working on a GIS API that uses OpenLayers. I am testing it using QUnit. The problem is I need to simulate clicks and trigger some events to be able to test the whole code. For example, I have a ...
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0answers
31 views

Radius based search with Leaflet maps

Using leaflet I have created a simple map, played around with markers (adding/removing) and have added some GeoJSON data polygons etc. I now need help with implementing a radius search. For example I ...
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0answers
10 views

Creating a layer switch Google Maps Api v3

I have generated a basic webpage with Visual Studio 2012 that displays a Google Map. My goal is to add multiple KML layers from my Server onto the Google Map, BUT, i want to be able to have a sort of ...
5
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3answers
132 views

Guidance when to style your features in Tilemill vs. Leaflet?

I've found this generally to be dependent on each project's goals (or what the client wants), but when you have the options, what any rules of thumb or guidelines do use you in a project to determine ...
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0answers
20 views

Dojo Stacked Columns Chart for JavaScript ArcGIS Web Map Pop

Anyone know how to use the the StackedColumns chart in dojo for ArcGIS JavaScript API? I need to add one to my popup window. I can only find the documentation below: ...
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1answer
25 views

Syntax for using ArcGIS for Server layer with WMS service?

I am having some issues with getting an image/png format from an ArcGIS Server. The console returns: Resource interpreted as Image but transferred with MIME type application/vnd.ogc.se_xml: ...
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1answer
27 views

ESRI Javascript API QueryTask error handling

I'm struggling to find the proper way to handle errors in a QueryTask. Particularly if the user clicks outside the feature layer. My current QueryTask looks at a field (bare_earth) populated with ...
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0answers
18 views

OpenLayers vector feature not being highlighted

I'm trying to highlight a clicked area of a layer using a vector: var highlightLayer = new OpenLayers.Layer.Vector("Highlighted Features", { displayInLayerSwitcher: false, styleMap: mystyle ...
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0answers
23 views

OpenLayers 2.13.1, how could I make a click, get coordinates, send it to geoserver function?

I am trying to make this very simple function, at the moment I am quite stuck when I have to place the markers as start/end points. I would like to add a marker as start and another as end and then do ...
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0answers
11 views

Get Web Map Layer Field Value for If/else Statement

I've been trying to read through the ArcGIS JavaScript API but can't find what I want. I have a web map on my page that is based on my my map stored on ArcGIS online. I want to create an if/else ...
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1answer
16 views

Kml not overlaying onto Google Map

I created a basic dashboard with MVC 4, visual studio 2012, The dashboard displays a Google map. Here is an image of the dashboard: My intention is to be able to take this Kml file: And ...
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1answer
25 views

ArcGIS Javascript API Editing - Create Feature from Geometry Object

I'm interested in passing a geometry object with certain attributes to an exposed feature class for committed edits. Essentially, I want to manually create a new feature without the template pane or ...
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0answers
30 views

Openlayers Map Marker / Popup Behaviour Mobile Devices

Quick overview. i am creating a site with a map using Openlayers and Open Street Maps. User clicks on map and fills out a popup form and submits form. Markers appear at lonlat points where map was ...
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7 views

WMC as a permalink

I'm using the permalink control in openlayers but there are limitations in the way it handles map's context. For example if users load an external WMS layer it won't appear in the permalink. WMC has ...
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1answer
30 views

Openlayer3 basemap appears white block in Chrome

i faced interesting an issue on Chrome. im using google's 4 number base layer (street, hybrit, etc.) When my tiles are loading over baselayer, baseLayer becomes white block. Why? No any issues on ...
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1answer
27 views

How do I cycle through the available Overlays and Base Layers using OpenLayers

I would like to have my map cycle through the display of loaded overlays and base layers using Javascript or jQuery. I would like to do this with a delay of 5 seconds between cycling. Does anyone ...
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1answer
32 views

Reproject WKT Polygon with Javascript

I have a polygon in WKT in EPSG:4326: polygonWKT = 'POLYGON((13.215179443359373 52.588032137196755,13.42803955078125 52.592620721000365,13.454132080078125 52.46897854656702,13.347015380859375 ...
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1answer
35 views

CartoDB or Leaflet.js get coordinates of point clicked?

Using CartoDB or Leaflet.js is it possible to retrieve the coordinates of the point on the map clicked when opening an infowindow?
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2answers
53 views

Leaflet highlight feature by ID

I have a map application where: I load polygons as GeoJSON objects I draw all polygons in a single layer I highlight a polygon on mouse hover What I need to do is the following: on mouse hover, I ...
1
vote
1answer
40 views

Basemap Widgets

I am looking for a fancy Basemap plugin to use with the ArcGIS Javascript API. Something along the lines of the Basemap Widget (see image below) available in the Flex Viewer would be great. Anyone ...
1
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0answers
20 views

How to offset/displace overlapping lines in a web map?

I have a dataset of points representing a To/From status - something like distribution centres and delivery addresses. When the user clicks on a point I'd like to show the relationships between this ...
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1answer
19 views

Accessing organisational webmap using downloaded Basic Viewer of ArcGIS Online?

I have downloaded the Basic Viewer of ArcGIS Online (AGOL) to my web- and arcgis server within my organisation. Now I want that copied basicviewer to access a webmap on agol that I made accessible to ...
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2answers
43 views

Simulate a mouse-click inside an ArcGIS Online JavaScript Application

I have a JavasScript application consuming an ArcGIS Online Web Map. I want to open a default popup at a specific coordinate. Is there a way to simulate a mouse-click at that point, or a better ...
0
votes
1answer
24 views

Using a tree menu beside openlayers

Is there an aplication to add tree menu for the map showed with openlayers? I mean show a map on my site exactly how is showing in google earth for example, my layers organized in folder/subfolder, ...
0
votes
1answer
42 views

Adding controls to OpenLayers maps - is this good code

I have multiple OpenLayers maps, each map gets a subset of controls that I use across all maps. In the past I have added controls in the traditional way, for each control. var control = new ...
0
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1answer
31 views

ArcGIS API for Javascript - InfoTemplate on a polyline

I have a web map with a few points and a single polyline. I have infoTemplate(s) attached to the points and tried to replicate this to the polyline however, I can't get it to work. I looked on the ...
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0answers
36 views

Geocortex Viewer: Running a Workflow with Arguments

I have a webpage with the Silverlight Geocortex Viewer embedded in it. Through the browser's developer console, I can run commands through it such as ...
1
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0answers
166 views

How can I get all the latitude, longitude coordinates/points inside a rectangular polygon drawn in google maps?

Google maps lets you obtain a valid address by clicking on houses or buildings one by one, but it would be much easier if you could draw a polygon on the map and get a list of all valid addresses ...
2
votes
1answer
44 views

FME Server API - Retrieve Output file as a URL

I have a FME Server web workspace converting a file from SHP to KML, once it runs it outputs a kml file, I need to be able to take this file and drop into my web API google Map. Is there a way to ...
0
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0answers
20 views

Map Route Direction Zoom to Segment

Basically I am trying to zoom to certain route segment when getting direction on OneMap. Here is the JavaScript codes where I trying to plot a route and zoom to certain route segment: function ...
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0answers
26 views

Plotting a Route on Google Maps using a string passed to a function as a parameter

I'm trying to plot a route, using Google Maps. I need to be able to pass a string to the function, to build the Polyline. I can do the following and it works fine: var flightPlanCoordinates = [ ...
0
votes
0answers
14 views

Function that returns the coordinates of the searched address

I'm using Java and GMaps4JSF to make an application where the person pesquisaum address that address is displayed on the map. As the code below, but I need to create a javascript function that ...
0
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0answers
38 views

How to use Javascript Esri map as GPS Tracking?

I have an android application that get the gps coordinates of the device and stores it in a remote mysql database. I want to use ajax to display the coordinates in a javascript api using esri. I just ...
0
votes
0answers
19 views

Finding adjacent tiles in Google Maps

I built a NodeJS API that returns locations and returns paths and stores them locally in MongoDB for fast responses. Also another part of the API is that it returns compositions of tiles ...
1
vote
2answers
42 views

Adding multiple layers with timed delay in Mapbox/Leaflet

So I've got a Mapbox map showing data split into several layers. I'd like the user to be able to click a play button to call the function "gogogo", and then the layers get added one at a time every 1 ...
0
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2answers
39 views

ArcGIS Javascript API: Get Map Object from DIV

So I am currently writing an application using the ArcGIS JavaScript API, and I want to access the map object that is held inside of my div from a js module I have. I was thinking it would be a simple ...
0
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1answer
124 views

dojo/parser::parse() error TypeError {stack: (…), message: “Cannot read property 'toString' of undefined”}

I'm trying to get the overview map example working from here: https://developers.arcgis.com/javascript/jssamples/widget_overviewmap.html in my site. I have two errors. Chrome gives the one above in ...
0
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1answer
66 views

Leaflet rendering TileMill tiles in the wrong order

I'm stumped, and quite a lot of searching has turned up nothing helpful. I'm on the first step of what will ultimately be a map with three raster layers and three layers of markers (with controls to ...