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

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446 views

Callback method geocode items nominatim not work

function addr_search() { var inp = document.getElementById("addr"); $.getJSON('http://nominatim.openstreetmap.org/search?format=json&limit=5&q=' + inp.value, function(data) { ...
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297 views

javascript/jQuery getJSON very slow with a inner loop

asked here too http://stackoverflow.com/q/25024466/528884 I'm using OpenLayers to render DOM for layerswitcher, with about 1200 divs. The problem can be simplified as follows. This is very fast (3 ...
1
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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 ...
0
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3answers
142 views

How to draw polygons from watershed boundary dataset?

I'm working on a web map using esri arcgis javascript api. I'd like to use the NHD Watershed Boundary Data to draw polygons based on the boundaries of the watersheds. Does anyone have any ideas of how ...
0
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1answer
231 views

Date field formatting as number in ESRI popup window

We are using the Park and Recreation Locator from ArcGIS for State Government and trying to put a date field into the popup info window. The field is pulling the correct data, but it's formatting it ...
2
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1answer
764 views

Check if line crosses a polygon

What I'm trying to do is with JSTS to check with lineGeom.crosses(polygonGeom) function if a line is crossing completely a polygon. The problem is that both cases from the picture returns true. I ...
1
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1answer
160 views

image rectification with Mercator projection

I have written an image rectification function which allows a user to select 2 points on an image and 2 points on a map. The function will then rectify the image so it is translated, scaled and ...
1
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0answers
85 views

Calculate distance in point collection algorithm

I've got collection of points which are sorted by x,y and distance between n and n+1 (array of objects [{x:0,y:0},{x:1,y:1}....] I would like to calculate distance between all points (point 1 distance ...
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0answers
51 views

How to go about creating a custom tool/adding special functionality for a web app

In my soon to be developed web app, I will have an image service and also a feature service that is essentially an index to the image service, with all kinds of attributes. I would like for the user ...
2
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1answer
448 views

How do I use Proj4Leaflet projections correctly?

I'm loading data layers from a WMS server into a Leaflet map, and I need to give the user a choice of projections. For the WMS server requests, I just need to change the CRS parameter to a different ...
0
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1answer
2k views

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 ...
4
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1answer
2k 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
0
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1answer
502 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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0answers
488 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"); ...
2
votes
1answer
1k 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, ...
4
votes
4answers
3k 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 ...
1
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1answer
995 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)', ...
2
votes
0answers
110 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 ...
5
votes
3answers
694 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 ...
0
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1answer
265 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: ...
1
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1answer
512 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 ...
0
votes
1answer
222 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 ...
1
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1answer
291 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 ...
1
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0answers
315 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 ...
2
votes
1answer
214 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 ...
1
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1answer
77 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 ...
0
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1answer
847 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 ...
0
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1answer
548 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?
4
votes
2answers
2k 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
96 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 ...
4
votes
1answer
239 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 ...
0
votes
1answer
226 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 ...
0
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2answers
393 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
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1answer
159 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
219 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 ...
-1
votes
1answer
173 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 ...
0
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1answer
616 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
1k 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
195 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
votes
0answers
115 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 ...
2
votes
2answers
760 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 ...
1
vote
3answers
418 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
votes
1answer
3k 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 ...
9
votes
1answer
1k 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 ...
0
votes
1answer
126 views

How get the link or file from uploads forder of feature service arcgis

I have succeeded in adding a file to arcgis server with the upload method of a feature service on arcgis server. But i can't see how to download what i have uploaded to. Do you have any idea on how I ...
3
votes
3answers
272 views

How to insert coordinates to url

What would be the approach to show and dynamically update the map coordinates in the url like stamen is doing it? Are there any built in functions in OpenLayers, what other techniqes could I use or do ...
4
votes
2answers
451 views

How would I get number of tiles loaded, and total number loading?

So new to OpenLayers 3, and I'm trying to create a "loading bar" to indicate how much of a layer has loaded. I'm thinking of making it based on the number of tiles loaded so far divided by the total ...
2
votes
0answers
323 views

Leaflet - Enable/Remove popup on mousedown/mouseup?

I'd like to do as the title suggests and can get the popup to appear on mousedown with the following code, but mouseup doesn't close the popup: // Quick look at info on mouse hold ...
1
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1answer
63 views

ArcGIS API for JavaScript - Adding Point(s)

I need to add a single point, I am new to JS and ArcGIS API. I was looking for some code examples on how to create a point and/or a few other points (as needed) I can't use any additional ...
1
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1answer
453 views

How to get the TOC to update after adding a new Layer in the ESRI JSAPI?

I am developing an Web map with the ESRI's JavaScript API v 3.9. I am using the TOC widget available at http://www.arcgis.com/home/item.html?id=9b6280a6bfb0430f8d1ebc969276b109 The documentation ...