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

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1answer
43 views

Update mouseover information with baselayerchange on leaflet map

On leaflet map I use baselayerchange in order to change the legend box and the info popup on rollover. The legend change works perfectly but I have a problem with the infobox (name info0/info1...), I ...
1
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0answers
32 views

How to emulate OpenLayers button click in C#

I'm trying to call a click of a user using C # with the following code ( " C # : GeckoWebBrowser.Navigate ( javascript : void ( Document.getElementById ( ' idOfElement ' ) .click ( ) ) " ) ; ...
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1answer
26 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 ...
2
votes
1answer
73 views

OpenLayers 3 measure example

Here is my fiddle, which is exact copy of Openlayers 3 measure example. What am I doing wrong when my fiddle isn't working? I can't see the blue dot to start measuring my path or area (same problem ...
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0answers
45 views

InfoWindows in Nested Polygons (Google Maps Api 3)

I have a large polygon with thick borders inside which there are several smaller polygons something like multiple city polygons inside a state border. The problem with this is that the info-windows ...
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1answer
44 views

different browsers referencing different css files, arcgis javascript cmv

When I open a page in chrome, and click on a feature the popup style is coming from one css file, and when I do the same thing in firefox, the popup looks completely different and is referencing a ...
1
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1answer
71 views

Why do I have to reload the page, to show the Map correctly?

I added a map, in the way I'm supposed to, but why do I have to reload/refresh the page, to get the map (almost) as I want to? This is, what I mean: Map before reloading the page: Map after ...
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1answer
67 views

Highlight polygon on hover and click in TileMill

I have created a MapBox.js map with several layers of polygons each with hover/click interactivity to show attributes about each polygon. I want the polygons to become highlighted upon a user ...
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0answers
10 views

Restrict legend to map bounds in CartoDB.js

Does anyone know how to restrict legend content based on map bounds in CartoDB.js? I am building a large, complicated legend and I would like it to only display visible features to reduce complexity. ...
1
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1answer
74 views

Configurable Map Viewer (CMV) - Content Pane with CMV

I’m upgrading from the old viewer to the new CMV version. Is there a better way for handling a content pane in the sidebar under the new format? In the previous version I did it thru the controller, ...
1
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1answer
81 views

Leaflet - how do you get individual markers from a featurelayer?

In Leaflet, if I have a feature layer filled with markers, how do I get these markers back from the layer? I want to apply different popups to each individual marker, instead of the entire set. I ...
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0answers
17 views

Problem with displaying a route in EU, method works in USA

could anyone help me with my code to create a route between two directions in Germany? According to instructions I am creating a route task and setup parameters: map.addLayer(new ...
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0answers
18 views

Jquery slider cycling through swipable layers - getting a bug

I'm building a tool that allows the visitor to cycle through rendered maps of low and high emission climate data projections. The high and low sets by themselves work great, but when I am using the ...
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3answers
150 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 ...
2
votes
1answer
414 views

ArcGIS Web AppBuilder widget config?

I downloaded a webapp builder template (javascript) that I've placed on my own web server and is running fine. However, I am not able to modify the widgets in the config.json file to the settings ...
1
vote
2answers
92 views

How to use same info window setup for more than one layer with identify, arcgis javascript api, cmv template

I am new to javascript and am playing around with customizing the CMV template https://github.com/cmv/cmv-app. I am trying to customize my info windows for my layers, and have had some luck modifying ...
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0answers
32 views

Leaflet.EasyButton toggle

I am attempting to incorporate Leaflet.EasyButton into an application. While I am able to drop it in and call a function I would like it to toggle on/off. right now it is loading an inner.HTML div ...
5
votes
2answers
436 views

How do the equations/algorithms behind buffering tools actually work?

I've been wondering how the equations/algorithms behind buffering tools actually work?
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1answer
54 views

How to style specific polygons from a geojson with Leaflet

I have a World Countries geojson, that has country codes as "ID" (feature.id) and names as feature.properties.name I would like to color specific countries for making a "countries visited" map. ...
1
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1answer
81 views

Converting GPS cords to X Y based on wrapper

I'm trying to create some software for an airport and they require me to place icons of aircraft in their position based on GPS. I have 10x10 tiles each tile being 256x256 pixels and the origin point ...
2
votes
1answer
126 views

How to get layer type in OpenLayers 3?

I would like to iterate through all of the added layers in an ol.Map instance and only select the vector layers. So far I could get the individual layers with the a property of the resulting object of ...
1
vote
1answer
136 views

Custom ordering/z-index of icons in Leaflet layer

I have a single layer (points) with a bunch of markers. Each point has an attribute that is regularly updated. I understand by Leaflet sorts the layers such that those lower in latitude are on top for ...
2
votes
0answers
79 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 ...
1
vote
1answer
42 views

Adding multiple addresses - ArcGIS Javascript

I am trying to use ArcGIS Javascript API to add all of the service orders that are open to a map. I can get this to work with a single address, but it is not working when I try to loop through a list ...
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0answers
119 views

How to disable Google map zooming animation effect?

I am using Openlayers mapping library in my application. I have integrated Google map V3 & added other several WMS overlays, Vector layers etc. Every thing working fine. But I am facing big ...
1
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1answer
53 views

Coloring polygon based on date using TileMill/CartoDB?

How would you color a polygon/line/dot based on a date? The colors would be a pre-set list. I need the area to update its color based on the current (or given) date. I would be using tilemill or ...
1
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0answers
29 views

view attributes from feature service and export to CSV or copy to clipboard

I have a Geo-Processing service that generates summary statistics of an area of interest. What I would like to know is; Simple method to display the data in my Webpage. Is Dgrid the recommended ...
1
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0answers
60 views

Printing from Feature Layer via ArcGIS API for JavaScript?

I am trying to print a map using a print service. I have followed the example on the ArcGIS site namely: https://developers.arcgis.com/javascript/jssamples/widget_print_esri_request.html However I ...
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0answers
78 views

Loading KML WMS Network Link through Google Earth API

I'm trying to add a KML network link with the Google Earth API using the same function that I have used for regular KMLs and KMZs. Sources suggest to create a KML with a "Ground Overlay" to connect to ...
0
votes
2answers
206 views

How to remove roads from Google satellite hybrid map in OpenLayers?

I am trying to display Google satellite map in Openlayers. So, I added Google Satellite Hybrid map. My problem is, I need to display labels(like POI, place name etc) but don't need any roads & its ...
0
votes
1answer
34 views

KML Layers suddently not appearing on embedded Google map

I have an embedded map on: http://wtc.army.mil/modules/family%20and%20caregivers/sfacMap.html I am receiving the error below in different forms related to the session id/token trailing after the ...
1
vote
1answer
27 views

Legend hangs with large featurelayers at startup

My problem is that I created an app with a lot of services that the user can use. The problem is that when I implement the legend widget and the code goes over startup(), the app becomes stuck and it ...
0
votes
0answers
32 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 ...
3
votes
1answer
126 views

Best Practice for HTML5 Geolocation with ArcGIS for Javascript API

My organization would prefer to use its own basemaps rather than those provided by ArcGIS Online due to the accuracy of information that is represented in them. The area we service is rapidly ...
2
votes
1answer
148 views

Leaflet: How do you use removeLayer?

This is driving me mad. See the Leaflet tutorial for adding a layer control to your map: L.Icon.Default.imagePath = "Scripts/images"; var mapUrl = ...
3
votes
2answers
118 views

How to determine number of features in GeoJSON file using Python or JavaScript?

Is there a best way to determine the number of features in a GeoJSON file? Ideally using Python or JavaScript.
0
votes
0answers
39 views

Display Google Maps Polygon Edge Distances in Meters?

How can I achieve this using the Google Maps API? The meters on each side.
1
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1answer
121 views

How to update leaflet L.imageOverlay using jquery serialize without page refresh?

I am developing an application that fetches and displays raster/image maps (png, tif), into a leaflet map. However, I didn't like the page and the map refresh upon form submission. In addition, I ...
2
votes
0answers
37 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 ...
1
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0answers
31 views

Retrieve the attributes from a feature with IdentifyTask/IdentifyRequest (Javascript API)

So I'm building a GIS web application. I am able to get the result from IdentifyTask with the "oncomplete" function, the problem I am running into is how I can get the information back out of the ...
0
votes
0answers
101 views

Layer Definition Query - Subqueries

Background: I want to track the movement of icebergs in ArcGIS. In my FileGeodatabase I have a single Iceberg layer. What I have thought of is to create an ID field for each object; each ArcGIS ...
1
vote
0answers
47 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 ...
0
votes
3answers
180 views

Read GeoTIFF file with php or javascript

Sorry, I am newbie with GeoTIFF files. I want to create a project that a person can upload a GeoTIFF file and the web application saves the lat/long of the picture into the database, the server side ...
0
votes
0answers
37 views

Node.js transformation from NAD83 to WGS84

I've used the excellent npm shapefile library to import Canadian electoral districts into MongoDB. Here's a sample file: http://ftp2.cits.rncan.gc.ca/pub/geott/electoral/2011/fed308.2011.zip Is ...
0
votes
0answers
27 views

Openlayers map changelayer event firing twice for params

I have registered changelayer event of my map. var registerEvents = function () { map.events.register("changelayer", null, onMapLayerChanged, true); }; var onMapLayerChanged = ...
0
votes
1answer
69 views

OpenLayers Drag&Drop a pin to select position?

Is there an OpenLayers example that allows the user to set a position with drag&drop. I would like to have a pin and set the position after the user drags & drops the pin to a new position.
0
votes
0answers
25 views

Openlayers complex markers

I have an example that displays an image as well as a string for each marker. My designers want the string to be displayed on top of the image and I don't know how long the string can be. Also I need ...
0
votes
0answers
32 views

imposm2 to imposm3

I am using imposm2 to import osm data to postgresql database but recently moved to imposm3 which is still in development phase I want to know is there an easy way to convert imposm2 mapping file ...
0
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0answers
91 views

OpenLayers 3 and Interactions - Select and Draw

I'm trying to make small app with OpenLayers3. I want to use two interactions - select and draw. Unfortunately when selet adding it's style to draw and remove other (selected earlier) features from ...
1
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0answers
73 views

Create a Leaflet custom checkbox control

I want to create a custom checkbox control which will simply set a flag in jquery/javascript: if checked the flag = 'clustered' or if unchecked flag = 'unclustered'. So far I have a control on the ...