Ticket #297 (closed task: fixed)
[wktraster] Implement ST_DumpAsPolygons function for raster
|Reported by:||mloskot||Owned by:||jorgearevalo|
Function ST_AsPolygon is part of Objective 0.1.6e and shall be implemented:
ST_AsPolygon(raster) -> polygon geometry set
This algorithm is very useful since it ensure that ST_AsRaster(ST_AsPolygon(raster)) should returns the same raster as the original (because it is based on the centroid of the pixel).
- Pierre: Can we directly use the GDAL function by copying the raster data into a GDAL structure or should we just copy/adapt the algorythm?
- Raster to Polygon Converter implemented in GDAL