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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11
votes
9answers
2k views

What are the advantages of using Rails for a GIS/mapping application?

I've heard some good things about Rails, but I don't know much about it yet. There are only a few questions about Rails on GIS.SE (and there's not even a Rails tag). Is it worthwhile to learn about ...
2
votes
1answer
117 views

Is it possible to cancel a request for a KmlLayer, and load a different layer, before it is actually visible

Having asked for a google.maps.KmlLayer, and whilst waiting for it to load, is it possible to cancel the request? Calling layer.setMap(null); seems to causes an error if the layer is not yet visible. ...
0
votes
0answers
245 views

How to Query Parks in GeoNames and Combine it With a Polygon Layer?

I run a hiking site and would like to get parks where you can at least have a nice walk. That means they should not be playgrounds, stadiums, and probably be bigger than 3 square city blocks at least. ...
3
votes
1answer
106 views

Is there any way to tell whether a park from GeoNames is small or big?

I have this query for parks in Alabama for example: http://api.geonames.org/search?featureCode=PRK&username=genadinik&country=US&style=full&adminCode1=AL&maxRows=100 But it ...
-3
votes
1answer
414 views

Geonames query for Alabama Cities does not bring two biggest cities

I have this query: http://api.geonames.org/search?featureCode=PPL&username=genadinik&country=US&style=full&adminCode1=AL&maxRows=100 Which brings back the top most populated ...
2
votes
2answers
132 views

Can't get correct number of populated places for a place

I am trying to get a number of populated places for example for Andorra since it is a small number. Here is a geonames site with 10 places: http://www.geonames.org/AD/largest-cities-in-andorra.html ...
8
votes
1answer
570 views

Custom panning using ArcGIS Engine

Due to some constraints, that I will not go into, I have found myself needing to implement custom panning in my application. The ArcGIS API reference suggests using the following methods: ...
5
votes
1answer
564 views

Determining ESRI File Geodatabase release version?

Is there any method in Python, ArcObjects, or the File GDB API for determining the release version (9.3, 10.0, etc.) of a file geodatabase? There is a need to find all of our shared 10.0 version file ...
2
votes
2answers
2k views

Google Maps JS API v3 - Polygon formation

So my big question here is how does the Google Maps API determine the "inner" versus the "outer" for a filled polygon? Playing around with the polygon creator @ http://www.the-di-lab.com/polygon/ ...
1
vote
2answers
139 views

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 ...
3
votes
3answers
234 views

How to tell if a country has states and what the state codes are

With the help of this community I understood how to find country codes and query geoNames data based on that. What I am stuck on now is understanding how to break things down by state where needed. ...
4
votes
1answer
302 views

MapQuest License

I read the license of Geodata provider (facebook, foursquare...) but I don't understand what it means: LICENSE FROM YOU TO MAPQUEST. If you upload any data, feedback, ideas, suggestions, ...
1
vote
2answers
1k views

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?
4
votes
1answer
302 views

Facebook Place Api

Do you know if there are a requirements or restriction on Facebook Place API? Is it possible to download the data? Is it open-source?
2
votes
2answers
1k views

Online service to transform coordinates from WGS84 to NZTM and NZMG

Has anyone come across a free web service / REST API to transform coordinates? I'm particularly interested in transforming from WGS84 to: New Zealand Geodetic Datum 2000 (NZGD2000 / NZTM) and New ...
5
votes
7answers
2k views

What map source/API/tools are recommended to create Web GIS/Mapping application utilising Microsoft technologies?

I'm researching about technologies (around Microsoft tech) to create mapping application and would like to have advice/suggestions. Brief requirement to build mapping application with Microsoft ...
4
votes
3answers
637 views

Type of event dispatched when the user double-clicks the map

I am currently working with a drawing tool for the ESRI Flex API, and every time I double-click the mouse a map service will perform a measurement and display the length of the line that I am drawing. ...
3
votes
2answers
860 views

Measure the Length of a Line on a Map after a MOUSE_MOVE Event

One of the actions a user can perform using the ESRI Flex Viewer application is to draw a shape on a map (e.g. a line). Once the user is finished drawing the line, they will double-click the mouse ...
8
votes
2answers
695 views

Most suitable open source GIS platform

I'm looking for an open source GIS server or desktop package that supports as many file formats as possible, is fast, runs on Linux or Mac and can be controlled via an API. Planning to do very basic ...
128
votes
16answers
47k views

How do various JavaScript mapping libraries compare?

I am working on a web-based mapping system and I'm trying to figure out the best/most appropriate library to use. There are a few of them about and they each have pros and cons. Even after trying a ...
4
votes
2answers
2k views

JavaScript library to read data from a WFS server?

Is there a JavaScript library available to read data from a WFS server?
2
votes
1answer
2k views

Google Maps API v3 vs v2 (JavaScript): overlay problems

I have been using the Gmap API (v2) for dynamically displaying some data: oMap.map = new GMap2(document.getElementById("map")); oMap.geoXml = new ...
18
votes
4answers
6k views

What reliable GeoCoding service would you recommend me?

I'm looking for a web service providing a full address based on coordinates (and reverse). I'm ready to pay for that service. I don't want to use Google's API.
5
votes
1answer
268 views

When is it better to use 64 bit File GDB access?

The beta 2 release File Geodatabase API includes 64 bit support. Esri says arcobjects is still the "preferred" method to interact with the file gdb. However, arcobjects has no 64 bit support. ...
1
vote
1answer
740 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 ...
3
votes
2answers
1k views

Working With Vector Product Format (VPF) - APIs, etc

I've been looking around the Internet for information about Vector Product Format. I want to put together a project that can read Digital Nautical Chart (http://msi.nga.mil/NGAPortal/DNC.portal), ...
2
votes
1answer
1k views

Google maps API charset for http request ?? Geocoding Requests

im sending the following request to maps api but receiving the json response with chars problem. Can some one point me in the right direction to set charset correctly ? Request -- ...
4
votes
2answers
1k views

ESRI REST API clients?

So, if I implement the esri GeoServices REST API with a non-esri service, what clients can I use with it? We (GeoREST) were initially thinking that ArcGIS Explorer or other desktop clients would be ...
3
votes
1answer
1k views

show position on google map/earth, from gps data, using google API

For those that have used google's API for mapping (google maps/earth), I would like to know if is it possible to develop an application to receive NMEA data from a gps receiver, extract position, and ...
3
votes
2answers
6k views

OpenLayers and the legend

Is it a possibility in OL to add a legend (symbology) directly to (under) particular layer (not only switch on/off the layer)?
4
votes
1answer
844 views

Geo-Tagged Tweets and Twitter API

When I do a timeline query using the Twitter API... http://api.twitter.com/1/statuses/user_timeline.xml?screen_name=MyTwitterName The geographic component of the reply looks like this: ...
17
votes
7answers
4k views

File Geodatabase Open API

Any ESRI boffins (insiders) know when this will be available? 2010, 2011? FINAL UPDATE now released 20th January 2011 - Can be downloaded here - ...