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Hey all,
I'm just recently working with FME.We are using fme for converting xyz pointclouds to geotiff format.Converting is not longer a problem (thanks to the fast help here).
But now i'm looking how i can set a boundrie for the geotiff.(drawn in blue)
As you will see in picture i have added here the geotiff also gives elevation where there is no data.(blue circle).
I know that in C3D i can set a boundrie for the geotiff or give a max triangle length(witch is not the best solution but also works for this problem).Is there anything like that possible in FME?
Many thanks,
Koen
Hi@venkenk,I suppose that you created the raster with the RasterDEMGenerator.
If you create another raster with the NumericRasterizer (Fill Background with Nodata: Yes) from the same point cloud,you can convert it to a polygon representing the data area with the RasterExtentsCoercer (Extents Type: Data Extents).You can then clip the current DEM raster by the polygon to get rid of the unnecessary part.
Note: Depending on the data condition and parameters setting in the NumericRasterizer,the RasterExtentsCoercer could create an aggregate (multi-part polygon) or a donut (having holes).Maybe you will have to determine the parameters in the NumericRasterizer with trial and error and/or use some additional transformers such as DonutHoleExtractor in order to clean the polygon up.
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