Hi, perhaps one alternative would be to implement shapefile support and to use gdarwarp and/or gdal_translate to create kml. But I don't have any experience with the kml format.
But shapefile would be a nice link to the gis world! Greetings Wolfgang Stacho Mudrak schrieb: > Quoting Bill Chadwick <W.CHADWICK at sky.com>: > >> As this is quite a nice way of presenting cave surveys, perhaps a Google >> tile generator would be a good add on for Therion. The advantage of building >> the renderer into Therion would be that the overlay could be drawn >> separately for each Google Zoom level to achieve a good line width and text >> size. >> > > Hmmm. Just one problem. Therion it self does not have any build-in > bitmap generator. All maps are generated as vector PDF. And generation > of bitmaps from PDF is very tricky (currently only Acrobat reader is > able to render these PDF files 100% correct). > > >> I am well informed in the areas of coordinate systems and map projections >> and able to program in C++. With some guidance I might be able to help with >> the coding of such an extension. >> > > I have tried to generate Google Earth's KML files from therion and it > seems to work (scrap outlines for maps, centerline for model, try > latest developement snapshot). All you need is to have georeferenced > cave data (see "Coordinate Systems" in thbook). Then just > > export model -fmt kml > > will generate .kml file readable by Google Earth. > > If somebody will create a good rasterizer script for PDF files > generated by therion (using ghostscript or acroread), there is no > problem for us to add export of long-lat coordinates together with PDF > file to be used by this script. > > S. > > _______________________________________________ > Therion mailing list > Therion at speleo.sk > http://www.speleo.sk/mailman/listinfo/therion >
