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

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3
votes
0answers
90 views

What is the openlayer.js alternative of unloadinvisibletiles of leaflet.js

I am using open layers with a tile server. I want to load maps while panning and destroy the loaded region when out of screen (Alternative to unloadinvisibletiles of leaflet.js) How am i suppose to ...
3
votes
0answers
174 views

Hexagon binning using Google Maps

I have a bunch of geolocated points that I am looking to cluster on a google map using hexagons. These clusters will be stored in a db for quick retrieval and will be reduced to a single point and ...
3
votes
0answers
413 views

How to convert WKT to SVG

I have some Well-known text (WKT) for representing geometry object such as Point, MultiPoint, LineString, Polygon, MultiPolygon etc. I have a multipolygon with in total 40000 Points. I have found ...
3
votes
0answers
597 views

Using Custom Map Projection On Leaflet

I have an application displaying a EPSG:3414 map running on Openlayers - jsfiddle working sample that works. I am trying to implement the same on Leaflet - jsfiddle non-working, it is not working as ...
3
votes
0answers
51 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 ...
3
votes
0answers
177 views

OpenLayers and external CSS

I am using geoExt and OpenLayers to plot some map. Everything worked well until I had to add some styling. To display it on the webpage, I need to use the CSS of my university and once I do that, I ...
3
votes
0answers
279 views

How do I format tilelayer.wms url properties such that I add an overlay iteratively to my base map in leaflet

My base map was created using hard-coded template variables. I am using the leaflet tilelayer.wms constructor and including the url like so: url: ...
3
votes
0answers
903 views

leaflet - Drawing line following the road

Short version: What I wish to be able to do is drawing a polyline along part of a road. In that way marking certain houses, along this road. Long Version: I have several houses that I wish to mark ...
2
votes
0answers
71 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 ...
2
votes
0answers
99 views

Check/uncheck overlays in groupedlayercontrol.js

In a Leaflet-based app I have create several overlays, grouped with leaflet.groupedlayercontrol.js, as shown in this image: Everything works well, but I need to uncheck certain layers, allowing the ...
2
votes
0answers
173 views

Comparing mapping APIs

I am planning to write a thesis about mapping APIs and compare three of them (Google Maps API, Leaflet and OpenLayers) or four, if you consider OL2 and OL3 as different APIs. I am planning to make 3 ...
2
votes
0answers
69 views

split polyline at specific distance

I am working on a project that uses sql server for geometry datatype and arcgis server and asp.net website and entity framework for data access and arcgis javascript api for map viewer. I want to ...
2
votes
0answers
81 views

Increase maximum zoom level for a WebTiledLayer in ArcGIS

I am using the WebTiledLayer from the Javascript ArcGIS API to render a custom WMTS source. The WMTS I am using has zoom levels going from 18 to 21, however I cannot zoom in further than what appears ...
2
votes
0answers
104 views

OpenLayers: Switch layer off when switching another layer on

As the title says, I want to turn layers off when turning another layer on. I wrote a function that works. However, I have to click the layer twice in the LayerSwitcher to turn the layer on that I ...
2
votes
0answers
73 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 ...
2
votes
0answers
134 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 ...
2
votes
0answers
135 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 ...
2
votes
0answers
41 views

GeospatialPDF javascript access

Using javascript in GeospatialPDF, is it possible to zoom in to an extent, say when the document is opened the first time ? To what extent can I use javascript to access the geospatial data? pan, ...
2
votes
0answers
425 views

It is possible put highcharts chart in openlayers popup?

As title. I build a openlayers map on my website. and there are many feature vector on the map. now I want to put a highcharts charts in popup. to show the temperature in every city something Like ...
2
votes
0answers
428 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
0answers
383 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 ...
2
votes
0answers
440 views

Openlayers and Google Maps Api aren't work on Android Platform

I have application that uses OpenLayers, Google Maps Api and Geoserver My application is running at Web browser and when I try to run at Android tablet (using Phonegap), It runs but openlayers ...
2
votes
0answers
197 views

Show geoJSON properties in jQuery Mobile Panel

First off I'm a novice at JS so please bear with me if this is a simple task to complete. I'm currently using the stock LeafletJS popup bubble to display the properties from my geoJSON. However, I ...
2
votes
0answers
156 views

get all the possible parameters of sql view

I have a Geoserver layer coming from a postGIS database. Among other attributes, I have one that is related to the date data we've collected, called departuretime. We use this attribute to display a ...
2
votes
0answers
481 views

Are there any examples of WCS getcoverage requests done using ajax?

I am looking through openlayers to try to figure out a consistent format for generating views of coverages that can satisfy any wcs server, but mainly I'd like to get geoserver coverages. While I've ...
2
votes
0answers
946 views

Problem with multipolygon in Leaflet

I'm using Leaflet L.Polygon, but for some reason there's only blank site. Here's my code: var map = L.map('map').setView([37.8, -96], 4); var cloudmade = ...
2
votes
0answers
340 views

How to use javascript in fusion tables to query

I'm having a quite bit of difficulty creating some functions for my fusion tables. I have two tables here: Points Parcels I'm trying to create a number of functions: 1) I want to be able to select ...
2
votes
0answers
67 views

Features disapearing

When I add a polygon feature it shows on the map. When I add another one the first one disappears. The code for adding is below: $.postJSON('@Url.Action("GetLayers")', { "planId": planId }, ...
2
votes
0answers
384 views

Creating a Geodesic Polyline Buffer in OpenLayers

I have a feeling that the answer is going to be 'You can't do that without some very complex coding' but I thought I'd go for it anyway. I recently asked a question on how to create a Polyline Buffer ...
2
votes
0answers
842 views

Dynamic Contour generation and project on google maps

Is it possible to generate contour map layer at runtime and overlap or project on google maps. I am using google map api v3 and want to generate contour map layer using data from sql server and ...
2
votes
0answers
98 views

Running a web application within ArcMap

I'm interested in creating a component / plugin for ArcMap that works something like ArcGIS online. Ideally a small web app would boot up within a window in ArcMap which would be able to perform ...
2
votes
0answers
449 views

GeoPDF Library for .NET or JavaScript

Anyone know of any open source .NET or Javascript libraries for creating GeoPDFs? I know of QuickPDFLibrary, but i'm preferably looking for something open source. I want to programmatically generate ...
1
vote
0answers
17 views

OpenLayers 3 xyz layer problem

I'm going to host a customized xyz tiled layer so I tested on my local machine to add that layer to OpenLayers Map control. I've already rendered some tiles using generate_tiles.py and Mapnik. I've ...
1
vote
0answers
44 views

open-source code for the map matching algorithm

For map matching of the GPS data to the network data, there is a algorithm from Schussler, N. & Axhausen, K. (2009a). Is this algorithm released under open-source license ? Where can I find this ...
1
vote
0answers
49 views

Raster overlay with different projection in Google Maps

I have a map created with Google Maps. I want to overlay over some data I am downloading dynamically, covering the whole world. That data is a matrix as follows: 1024 values for the longitude ...
1
vote
0answers
90 views

How to add pixels offset based on resolution

Currently I'm displaying popups on my map using this utility by Matt Walker. My code is something like this: map.defaultPopup = new ol.Overlay.Popup({ panMapIfOutOfView: false }); ...
1
vote
0answers
32 views

How to Load SQL Geometry Data on OpenLayers3?

I am New in OpenLayers 3. I have to load Geometry data from sql to my OpenLayers map. This is my code : var tileLayer = new ol.layer.Tile({ source: new ol.source.MapQuest({ layer: 'osm' }) }) var ...
1
vote
0answers
99 views

ESRI JavaScript API Web Application and SQL Queries in ASP.NET?

My workflow (and security restrictions) for a new html/javascript based web application is making me think that I could program an ASP.NET application, inside which I load the 'map' and the 'legends' ...
1
vote
0answers
17 views

Narrow viewport => not showing map in browser?

I have a webapplication using the arcgis javascript API and it works great. Unfortunately I ran into a small peculiarity: If the viewport for the map is smaller than 930 pixels it refuses to load my ...
1
vote
0answers
56 views

How do I modify the WebAppBuilder "LayerList' widget to use radio buttons instead of checkboxes?

I've downloaded the developer version of the Web app builder and installed in on my machine. I can open up the widget '\LayerList\LayerListView.js', and I have been exploring the source code. I would ...
1
vote
0answers
23 views

Disabling TextSymbol Scaling on Zoom in/out (ESRI JavaScript API)

I am looking for a way to disable text scaling when a user zooms in/out on a map with a TextSymbol on it. It this possible?
1
vote
0answers
59 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, ...
1
vote
0answers
183 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, ...
1
vote
0answers
473 views

Disable doubleclick zooming in Openlayers 3

I've searched for it on the entire web and finally I found on artamstrong.com how to disable a single feature like "mouseWheelZoom". Here is how double click zooming in Openlayers 3 can be disabled: ...
1
vote
0answers
35 views

Run a locator task

I'm working with ArcGIS javascript api and I have a search function that finds a persons address by name and sorts it into a table inside a modal popup. It returns multiple people with the same name. ...
1
vote
0answers
90 views

styling wms layer using sld in openlayers3

i want to style wms layer using sld in openlayers 3.written part of code shown below.but not any console error messages are shown and not applied styles to layer..... var sld = ...
1
vote
0answers
128 views

library for minimum bounding box “by width” in javascript or python

I'm looking for a library (or at least a code snippet) to calculate the minimum bounding box "by width" in javascript or python. Below is an illustration from the ArcGIS documentation of that ...
1
vote
0answers
63 views

Create Popups With Multiple WFS Layers

I am having trouble displaying popups on points plotted on my Open Layers 3 map from two different WFS sources. Both are PostGIS tables coming from geoserver. var popup = new ol.Overlay.Popup(); ...
1
vote
0answers
55 views

Displaying a graphic layer derived from an arcgis server geoprocessing task on a webapp map

I know this should be basic.... but I am trying to get an ouput from a arcgis server geoprocessing task of data type "GPFeatureRecordSetLayer" to be added into a map on a webapp. here is the code (the ...
1
vote
0answers
25 views

Using statisticdefintion in a querytask

I have a question about using QueryTask to accomplish to jobs: Identify unique value for a county in a graphics layer via mouseover. This unique county value (from a specified field) is used to ...