Hi all,
Does anyone know of an easy method to create a polygon around part of a LiDAR tile where the LiDAR tile does not have a complete set of values or is not complete?
So in the example below I would like to create a polygon around the colored sections (crudely drawn in red), not the whole tile.
I have tried the RasterExtentsCoercer, but that just creates a polygon over the whole tile.
Thanks all.
Best answer by daveatsafe
View original
+17
Hi @juffers,
Please use a RasterExtentsCoercer transformer, with Extents Type set to Data Extents. This will create a polygon around the data areas of your raster, excluding any Nodata pixels.
Hi @juffers,
Please use a RasterExtentsCoercer transformer, with Extents Type set to Data Extents. This will create a polygon around the data areas of your raster, excluding any Nodata pixels.
Hi @DaveAtSafe, That's exactly what i was looking for, thought it would be something simple like that. Appreciate the help.
+10
The RasterExtentsCoercer is great :-)
But I have lots of individual pixels that have nodata values, that form small holes inside your large polygon.
I suggest you also use DonutHoleExtractor to remove these small holes
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