I'm about to polygonize this b/w monochrome raster bitmap and need gdal at some point to fill in the small holes
This is difficult to explain without the image, which you can see here: If you were to zoom in way down into this image you'd see something like this: Now, this is great actually. And is a leap ...
I'd like to make a CIRCULARSTRING in PostGIS 2.0.0 out of points that are calculated as part of the query (rather than constants). For a LINESTRING I can do this using ST_MakeLine(). Is there an ...
I'm using PostGIS 2.0.0 and would like to store a GML Surface in a way that allows calculating intersections between that surface and various points and lines. In my case, the Surface will have one ...
I'm searching informations about drawing simple curved arrow lines into free GIS like QGIS, in this problem data geometry is CIRCULARSTRING ( a type which exists in latest postgis version) It seems ...