CSISS (Center for Spatial Information Science and Systems) and GMU (George Mason University) offer almost 80 APIs that provide geospatial processing and analysis services. Most of these APIs are based on GRASS (Geographic Resources Analysis Support System), an open source image processing and geographic information system.
The majority of available services are for satellite image processing, raster image processing, raster map statistical analysis, and vector map processing. There are also a few miscellaneous services for tasks such as hydrological analysis and fire-spread simulation.
The following is a list of how-to and tutorial content that matched your search term. ProgrammableWeb's how-to content comes from two sources; full-blown tutorials that we publish ourselves and other highly relevant tutorials that we find elsewhere on the Web. This list represents on combination of both tutorial types and if you go to ProgrammableWeb's API University, you'll not only be able to find more, they are organized based on your role (API providers or developers who consumes APIs). If you know of a tutorial that would be of interest to the ProgrammableWeb community, we'd like to know about it. Be sure to check our guidelines for making contributions to ProgrammableWeb.