Ragi Burhum and I decided it would be good if the California Chapter of the OSGeo could get together to work on a simple open source GIS project. (California is the home to the Silicon Valley, after all.) After kicking around several ideas for projects, we decided to work on a set of geoprocessing pipes implemented in Python. I am not an experienced Python programmer, or very familiar with GDAL/OGR. But I'm ready to learn Python, and Ragi has worked with GDAL/OGR in C++.
I'm trying to start work on my first pipe for our project. The input of this pipe will be a set of simple features represented by point geometries and an elevation grid/surface. The output of the pipe will be a modified set of simple features. The point geometries of these modified simple features will have an elevation based on the points horizontal location "over" the elevation grid. Here are my questions: Is there a OGR programming construct to represent a simple feature? If there is, can you tell me where to look for the Python files that would represent these simple features? Is there any example Python code that will show me how to obtain simple features from an ESRI Shapefile? I also need to know if GDAL has programming constructs to work with elevation grids. If it does, where do I look for those Python files? I realize that GDAL/OGR are written in C++ and not Python. If there isn't a place to easiliy locate the Python files then I will work with Ragi to build the Python files from the C++ source using SWIG (something I know absolutely nothing about). I know everyone is busy. I don't want anyone to write my code for me, but any suggestions on where I start looking in the source code so I can learn how to do what I need with the library is appreciated. I will make a commitment to make documentation/Python code for working with GDAL/ODR that results from our project available to everyone that is interested. Thanks for the help. Please remember I am a Java programmer, which means I will require extra patience. Ragi and I wanted to get some working code before we announce our project to the OSGeo community, so I appreciate your discretion while we get things started. We don't want to be dismissed as another idea that is all talk and no substance. :] Landon _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
