Application programming interface (API). A set of interfaces, methods, protocols, and tools that application developers use to build or customize a software program.

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How To Add a QgsSvgMarkerSymbolLayerV2 to VectorLayer in Qgis?

I'm using Qgis2.4.0 API to develop a C++ application. I want to add a svg symbol to a vector layer. Here is what I have already done: add vector, then add symbol. But I get stuck dong this. Here is my ...
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37 views

Linestring to CartoDB api

I want to add a linestring to a CartoDB API web app for one time use, I have SQL statement being ran at the same time and just want the linestring in the SQL statement to be displayed.
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1answer
128 views

APIs to render custom WMTS source

We have a custom WMTS source which we want to show on Android and iOS. What would be my options to do this using native APIs (so no Leaflet or Open Layers)? An ideal API not only shows the maps but ...
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1answer
53 views

Display linestring on Cartodb with SQL

I have a Cartodb api for a separate map, I need to display a linestring for each time the sql is run, but not store the linestring in the database.
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1answer
107 views

Use Ushahidi api in another map using openlayers

I have a ushahidi deployment and i am using Openlayers + ushahidi api to show the reports in a separate map along with other features. i have queried the data from ushahidi api and made a vector ...
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2answers
101 views

How to find variable names for SF1 Census files

I'm trying to to read the 2010 Census data so that I can link some of my research data to geographic information. Ideally I would like to use census tract data and other covariates. I've downloaded ...
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1answer
190 views

Mapquest directions API in ArcGIS javascript webmap application

I'm trying to build a webmap application using the ArcGIS JavaScript API. A functionality I would like to include is driving directions from a current GPS location to a feature in my feature service. ...
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83 views

“US NED” OnEarth JPL NASA Tiled WMS working?

I am working on developing a computer software application that displays a 3D terrain based on the 30m elevation data for USA. I am using the OnEarth JPL NASA Tiled WMS for fetching the elevation ...
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35 views

Is the QGIS API suitable for my application

I am working on an Linux/QT application that includes a real-time map based display of multiple robotic vehicle positions, where the positions are derived from a variety of sources--some are GPS, ...
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133 views

What technology does google analytics use to show the map?

Does anyone know what technology is used by google analytics in the Geo location tab? It looks like a combination of image and vector. Is it WMS & WFS or something else?
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1answer
120 views

How to programmatically export a composition as image?

QGIS Print Composer has tool "Save As Image" and I found appropriate function in QGIS source code exportCompositionAsImage. Is it possible to get access to existing Print Composer from Python console ...
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650 views

Is there a API which return the geojson data for a countries borders?

Is there a simple free REST API where I can send the name or code of a country and get in return geojson data which highlights it's borders ? I'm writing an application where I will have a changing ...
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225 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 ...
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187 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 ...
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1answer
121 views

Programmatically set layer properties Python Init function

Is it possible to set the layer properties Python Init function field programmatically? I've been looking through the qgis 2.2 api but can't seem to find anything on it. Hint, suggestions and ...
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1answer
335 views

How to remove legends in cartoDB?

I am able to add and remove cartoDB layers over my google maps but after removing layer the legend stays . how to remove that legends ? here is code that i used ...
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2k views

Is there a way to calculate driving time/driving duration with google maps api without considering the traffic situation?

I am currently using this VBA-Code, written by Jamie Bull, to calculate both, driving distance, as well as driving duration, between approx. 1.500 villages and a specific shopping center, using excel. ...
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47 views

CartoDB - renamed table and changed API calls but still failing

I used the SQL API to make a new table with some data from an existing table. I also renamed all the API calls in my code to point to the new table. However, no point markers show up on my map now. ...
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372 views

In cartodb, how can I insert a new row in a table via API?

We've discovered cartodb and we want to use it in our project, but in the API documentation we've only seen the sql.execute() method (docs) in order to insert a now row in a table. Is this the way to ...
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2answers
94 views

Need help with ArcMAP API to find coordinates of points in point shape file

I need to find some reference or even C#.Net example code of how to use the ArcMAP 10.2 programmers API. I have got a CSV file with X, Y and Elevation coordinates of soil samples and I want to write ...
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1answer
250 views

Web API for reverse geocoding geographic features

Is there a free web API that can reverse geocode geographic feature names? I'm currently using the Google API, which will return political and street address info, but I would like to return the names ...
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114 views

GDAL C/C++ API and filtered pyramid tile generation

I have been tasked with adding functionality to an existing C++ developed toolset whereby a source dataset (typically a single GeoTIFF) needs to be split into tiles at various resolutions ('zoom' ...
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1answer
76 views

How do I get a JSON list of all the visualizations in my CartoDB account?

I'd like to integrate all my CartoDB visualizations on a website, is there a way I can make a call and get them back as JSON?
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70 views

Custom infowindow exception in CartoDB

I'm building a runtime layer and til a couple of days ago my code was working. Since today it started giving me an exception that is causing subsequent code not to work. Uncaught ReferenceError: ...
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1answer
235 views

Cache geodjango query with bounding box filter

Im using geodjango (postgis) to retrieve points contained inside a bounding box (made by leafletjs), it works so nice, but now I want to cache this query. A tipical query is one like this: ...
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528 views

Unable to make infowindow work in CartoDB runtime layer

I'm trying to personalize a layer created with CartoDB. The layer is created at runtime and the problem is that I cannot make work even easy things like custom infowindow or legends or click ...
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255 views

CartoDB create layer at runtime

I'm almost totally new to CartoDB. I've been looking around and read the api reference, but there seems not to be what I'm looking for. What I want to do is to "Create visualizations at runtime". ...
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2answers
2k views

Do you know a service route calculation to get a route between several points?

I need a routing service with an API callable from a web or desktop application. I have several points: a start, an end, and intermediate points in the disorder. I expect the routing service to send ...
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1answer
191 views

using WebTiledLayer function

Using esri javascript api version 3.8, I am trying to use some cached tiles from our server at http://hexe.er.usgs.gov/ifhp/will/tiles/ using WebTiledLayer. I believe that our tiles are set up as ...
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1answer
105 views

How to calculate correct angles for lat/lon points with the QGIS API?

I am trying to use qgis API to calculate the angle between two points by using function azimuth of class QgsPoint ( http://qgis.osgeo.org/api/classQgsPoint.html ), and my CRS is EPSG:4326 - WGS 84 , ...
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58 views

geoprocessing libraries for Google Maps [closed]

Are there any GeoProcessing libraries that I can use with Google Maps to get some more advanced features?
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1answer
809 views

ArcGis Server Java script API error code 500 while using proxy.ashx on one particular server

I am looking for help with using proxy.ashx in Javascript API on one particular server at a client site. We have a GP service that the proxy is used to access (when request is more than 2048 ...
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1answer
262 views

What is ArcSDE API used for?

To create applications that manipulate ArcObjects there is the VBA and Java runtimes. To create application that process data with ArcToolbox tools, there is ArcPy for Python. Today, I discovered ...
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1answer
76 views

Why aren't my basemap tiles showing up via ArcGIS Server

I have a leaflet js script referencing the ArcGIS server imagery api. The code worked fine up until about two days ago. Now when I click on the layer there's a gray background. I am using my local ...
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1answer
166 views

How to refresh layers independently?

I'm writing a C++ application using QGIS API and I would like to improve the performance. I want to render 5 layers: one raster layer using gdal to load Bing/Google Map tiles 4 custom QgsMapLayer ...
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1answer
45 views

Connecting a map to live data from Yahoo Finance

I have a vector world map and am trying to connect it to Yahoo Finance, Live, in such a way that: a) If a particular country's currency goes down, the map of that country will go RED and if it goes ...
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1answer
177 views

How can I extend L.mapbox.legendControl?

I'm trying to override legendControl.onAdd, but I can't seem to do it early enough. I can override the other functions, since they're fired after map init, but I can't seem to change the prototype? ...
2
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1answer
175 views

How to return geo-tagged social media posts?

I have seen quite a few ESRI web apps that utilize Geo-Tagged social media posts as a point data layer. I'm wondering how one goes about querying things like Twitter, Flickr and YouTube to return ...
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1answer
109 views

Road Miles Calculation without Google Maps

We have two ZIP codes we want to calculate the road mile difference. Google maps states you cannot use their API if you do not show a map. Is there another service that provides this type of ...
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3answers
488 views

How to simulate google maps user experience

I’m not familiar so much with GIS applications and libraries. There is something that I would like to know if it’s possible or not. We are using ESRI suite of products as our GIS infrastructure. We ...
2
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1answer
398 views

US Census API - data by census tract

Using the US Census Tract API I can search for the age population in different parts of the country http://api.census.gov/data/2010/sf1?key=[key]&get=PCT0120125&for=county:* returns list of ...
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1answer
4k views

How to use OpenStreetMap in Java?

I have a requirement of GIS to be implemented using Java. I have read the developer guide for OpenStreetMap but there is insufficient information for its setup technically. I am completely new to ...
3
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1answer
850 views

How can I get the elevation of a point in openlayers?

I want to know if it is possible to obtain the elevation of a point with some type of control of others. I am painting a linestring with a series of coordinates but I need to know the elevation of ...
3
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1answer
587 views

Plotting multiple addresses with distance to specific POI

I'm not sure if this is the correct place for this question but here goes. I am getting ready to move to a different city. Right now I have about 80 houses to choose from. One of my parameters for ...
2
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2answers
473 views

Retrieve data from MongoDB in OpenLayers

I wonder if it's possible to retrieve "directly" data from MongoDB to display them in an OpenLayers Map ? Maybe using some sort of API ? If you know more about this, or if you think it's a stupid ...
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5answers
2k views

Is there a programmatic way to retrieve Landsat 8 Satellite Images?

I have not been able to find out this myself, but is there a way to programmatic access Landsat 8 Satellite Images? I know that I can go to USGS EarthExplorer to search and browse through the scenes, ...
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1answer
62 views

Install plugins for qgis in centos

I followed the instructions here: How to install QGIS on Centos 6? If I run: QgsVectorLayer * vpoly = new QgsVectorLayer("Polygon", "pointbuffer", "memory"); QgsVectorDataProvider * provider = ...
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2answers
918 views

Can I use leaflet to access a WMS service published as an OpenLayers javascript API?

I would like to add this layer to a site I'm working on that uses leaflet: http://116.240.195.134/vicmapapi/UserGuide.jsp The API itself is a javascript file based on OpenLayers: ...
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1answer
71 views

Free geo api with minimal constraints

I want to write a game that will draw real geographical map. What software systems can often make requests for free? I need to stay at drawing a map.
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1k views

What alternatives do I have for Directions API other than Google Maps and MapQuest?

I need an API, other than the two below that, given the starting point and possibly the ending point, will re-order a list of waypoints by the shortest, fastest or optimized route: Google Directions ...