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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POI Datasets for North America

I use foursquare because it contains a lot of POIs. Which database do you use when you need a point of interest in North America?
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379 views

How can I represent Time in GeoJSON?

I'm modelling a bus route as a series of waypoints. Most of these waypoints have just a latitude and a longitude and represent points along a road. However, when the bus gets to a bus stop, the ...
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is it possible programmatically to rotate a svg of the feature without rotate all feature

I am working on a project that need to move and update the shape of the feature of the layer. I am working in c++/ QT4.8.5 and qgis api c++ 2.8.2. In my Layer I have a lot of features, each feature ...
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54 views

How to (programmatically) determine if a WMS endpoint belongs to a GeoServer?

Given a WMS endpoint URL (and the ability to make calls to it), what is a reliable way to work out whether it is a GeoServer, ArcGIS Server, or something else? The reason we want to know is due to ...
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115 views

Where I can find API for Countries, States, Cities and airports

I'm looking for an API or data source (or multiple sources) that provide the following information: Countries Information: ISO code, Region, Capital, population, languages, currencies and climate. ...
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extract elevation values along a line using Google Elevation API

I note that there is the Google Elevation API. I see they have an example at the bottom showing an elevation profile for a line. Is there a premade service someone has put up on a website for me to ...
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Using GeoServer REST API and C# to create Layer Group

Following information at this link in the section on creation of layer groups, I've created the method(C#): public bool AddToLayerGroup(string layerGroupName, string layerName) { ...
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1k views

sending a XAPI-Request to the API-Server - over http

pretty new to Geo-Informatics so do not bear with me if my questions sound like newbie-questions: can i do some requests on POIs of Openstreetmap with XAPI. doing like so: i send a request to the ...
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Assigning variables into a API text string postgis

I am trying to assign values to variable in PostGIS. I have a API similar to: example I want to create a trigger that parse the x,y coordinates from my geometry column to a field containing the ...
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72 views

how to rotate a symbol

I am working in c++/python/QT 4.5 with the api qgis 2.8.2 My application receive data from a communication port that indicate the change of position of an object diplayed on the map and represented ...
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186 views

How can I get the current center of the view in OpenLayers 3?

I would like the get the center (coordinates) of the current view. I need it for the geoserver print module. I've found the code var center= ol.extent.getCenter({}); but it unfortunately doesn't ...
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61 views

ArcMap, Editor and Geodatabase API edit session question

Say a feature class from a File GDB is added to ArcMap and an editing session on it is in progress. What happens if an add-in launched from the same ArcMap session tries to start an edit session using ...
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[GDAL API]: can't save image in some formats

edited "32-bit buffer" below means that it contains 32-bit rgba pixels. I need to save image to file from 32-bit memory buffer. Code below works well for that when I use TIFF format. In this case ...
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903 views

GDAL C++ API: How to create PNG or JPEG from scratch

I'm new to GIS and GDAL. My question probably is very basic, but I couldn't find answer. May be I don't understand GDAL ideology. I need to create raster images from scratch, for example, JPEG or ...
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451 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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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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188 views

Global Geo Api places

I'm looking for a global geoapi for the places. I see Facebook places, google places, simplegeo, factual etc... Why not create an API that includes all places? Free and easily accessible as ...
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1answer
1k views

How to add pins to my map?

Is there a way to add locations and info windows to my own map in .tif format? I'm using MySQL and PHP. Can I use Google Maps API pins but not their map? I thought I can put my georeferenced map ...
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Getting height data in XML of fixed points in The Netherlands

In Holland we use a tool offered by the government to get the height data based of NAP (Nieuw Amsterdams Peil), the tool works but it's kind of clunky and inefficient. ...
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Discovering gravimetric station data, including location and measurement?

I would like to refine an precision estimate of local gravity based upon current GPS position. Ideally, similar to the National Weather Service API, I would like to interrogate a server with a REST ...
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Mapping WaterML data in cartodb

HI has anyone had success in mapping WaterML data in cartodb? (WaterML). I can't get it to work and not sure what I am doing wrong. I also used this tool to generate a REST URL but still couldn't get ...
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23 views

problem with my zoomIn or ZoomOu

i am using qgis 2.8.2 and qt4.8.5 i have a problem when i call zoomIn or ZoomOut, the raster on canvas is reduce or zoomed but : - the raster size change - it disaprar - it appear again but 3 to 5 ...
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How can I remove feature selection from my layeroverlay in mapguide API?

I can add feature to my layeroverlay on mapguide API, but I don't know how to remove it. Can you help me find a method to remove a feature from a selection ? This is how i add features to my layer : ...
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How to select a feature with the mouse click programmaticaly

I am working in c++/QT 4.8.5 and the api c++ qgis 2.8.2 In my application i had top select layer with the mouse click button to get attribute value and show them in a popup windows I see in the api ...
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How to re-render only a single layer on a mapcanvas?

In my application I have a mapcanvas that contains several layers. some of layers need to be updated or rendered again because data has been changed ( like the geometry or some attributes ) Is there ...
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Problem creating polygon in a layer

I am working in c++ qt4.8.5 and api qgis 2.8.2 c++. In my application I had to put polygon to define attractive zone. I found a great post in stackexchange (86812). I have based my on this post and on ...
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51 views

How to create a specific svg file with data from a feature

I am working in c++/ QT4.8.5, with qgis api c++ 2.8.2 I have to display a dynamic icon for a feature. some of the data change periodically and in order to display the change i need a svg that can get ...
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20 views

Building error on changegeometryvalues

I am working with c++/QT and c++api gqis 2.8.2 I want to change the geometry of a feature, I have this code : QgsVectorLayer * lLayer = mMapLayer.value(TRACKS); QgsVectorDataProvider * ...
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41 views

How to add a point in a empty vetorLayer creadted in memory

I am working in c++/qt 4.5 and qgis api c++ 2.8.2 I had to create and empty vectorLayer and add Point I saw in the qgis cookbook that it is possible to create a vector layer in memory ,I did that, and ...
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Building error with QgsVectorFileWriter

I am working with qgis api c++ 2.8.2, in c++/QT 4.5 I try to save my List of QgsField but I have the error message : no matching for call to 'QgsVectorFileWriter' I took the sample from here : ...
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1answer
51 views

Information about the setDataDefinedProperty

In the QGis C++ API v1.6 there is a function called setlowerValue to set a value for a specific Symbol In my application i use QGis C++ API 2.8.2, i try to understand how the function ...
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63 views

How to render the Sea depth level in different color?

I would Like to adapt an old code in c++ using the api qgis 1.6 : const QgsRenderer* lrenderer = pLayer->renderer(); if( lrenderer == NULL ) lrenderer = new QgsSingleSymbolRenderer( ...
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394 views

Including WMTS Layer from API in Openlayers2

I´ve generated a map API from the GBIF data portal. It shows points from the country Mali. I included the API as a WMTS in Openlayers2, but I dont know how to change the xyz accordingly, so that my ...
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236 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
945 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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297 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
393 views

Geoserver api: how to determine a layers respective workspace?

I am using the geoserver api to find information about layers that are available. I am using: http://localhost/geoserver/rest/layers.json to get a dynamic list of all layers. If I then select a ...
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1answer
130 views

jquery communication with arcgis services

I am working with the ArcGIS JavaScript API for my application. My app users are stored in a table published in a map service. Whenever a user wants to connect to the app, he needs to provide a ...
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288 views

How to request a limited no of features in Overpass api?

I am using Overpass api to query Building data from OpenStreetMap. the query string is like this (way[building](bbox);node(w););out body; This works really fine (the bounding box is specified by ...
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Where is the ArcGIS Workflow Manager REST API documentation?

I hope it is online and I'm just missing with my searches. I'm looking for this API documentation for 10.0 (but I will +1 answers relating to the 10.1 version):
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google maps API v.2 to v.3 conversion

I want to go from http://www.zolnai.ca/WMS/whereintheworldV2.htm to http://www.zolnai.ca/WMS/whereintheworldV3.htm I went through Gmaps API documentation on code.google.com And added the changes that ...
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Why does GeoNames say there are only 73 parks in Mexico?

I did this GeoNames query http://api.geonames.org/search?featureCode=PRK&username=genadinik&country=MX&style=full&maxRows=10 and it says there are only 73 parks in all of Mexico. Am ...
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799 views

How to access .shp file from local computer or some other server

Below is the code in which we can access a feature layer from ArcGIS sample server. queryTask = new ...
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Using Google Maps API to dynamically display delivery-time zones?

I'm looking to replicate the functionality from the UPS Ground Map which will allow users to enter a zipcode, then dynamically show delivery times by region. I know I need travel times by state data ...
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1answer
53 views

Alternative overpass api for OpenStreetmap locations query?

Currently i use the overpass api to query for "leisure=playground" ways and nodes to display them on a map in a webapp. The problem is, first of all its very slow (even with querys limited to a high ...
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How can I create an in panel TOC widget using the Web AppBuilder for ArcGIS developer edition?

I'm trying to create a custom widget, in web AppBuilder for developers, for my web application that will be a TOC. Does anyone have a code already produced for this or know how to adapt code to do ...
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47 views

Cartdodb change public map in real-time with SQL query

I'm a data science student working on my capstone project. I'm new to CartoDB and have been playing around with their API a bit but can't seem to find what I'm looking for. I have created a public ...
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polylines between two locations over sea and not land

I have several thousand locations in a database, Location A travelling to Location B, New York to London, Paris to Buenos Aires. I'm trying to plot a path between two places only over sea. I'm not ...
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how to draw curved line in a qgsmapcanvas

i am working on a project with qt4.8.6, api c++ of qgis 2.8.2 we need to draw curved line in a vectorlayer by given 2 points and an offset by exemple is it possible to do that with the c++ api of ...
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How to map geoJSON polygon from a url request in python

Using Python I have loaded json data from the url http://environment.data.gov.uk/flood-monitoring/id/floods and have found that the flood areas encoded as geoJSON polygons are displayed as url links. ...