I've read the long interesting discussion about 3d-polygons and TINs: http://www.nabble.com/convert-3D-polygons-or-Tins-to-a-DEM--td14998420.html
AFAIU, code to manage the creation (and editing?) of 3d features, like TINs, is still undergoing development. I think this is a good moment to propose to consider, in the TIN creation phase, the use of multiple types of input features: points, lines, polygons. I come from ArcGIS world, where it's possible to set these as "mass points", "breaklines" and "hulls" [1]. For example these features are strongly requested by geologists, when i.e. fault lines has to be setted, or when a highland is known to "break" the linear interpolations of points. Of course, it's a wish... but maybe useful while doing "brainstorming" about the code to be developed. :-) Giovanni [1]: http://webhelp.esri.com/arcgisdesktop/9.2/index.cfm?TopicName=Creating_TIN_surface_data_from_vector_data _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
