I'm using RasterTiler to create tiles from a larger raster. However, I noticed many resulting tiles contains only nodata values. How can I avoid writing out these tiles.
Solved
How to filter out raster (tiles) that contain only nodata?
+18- Safer
Best answer by jdh
If you use the RasterBandMinMaxExtractor, you can test if both the min and max values equal the nodata value.
+28- Contributor
- Best Answer
If you use the RasterBandMinMaxExtractor, you can test if both the min and max values equal the nodata value.
+3- Safer
If you know what the Nodata values are in different bands, you can use the RsaterBandMinMaxExtractor to extract the min and max values of each band, and then using a Tester to filter out tile features whose min and max cell value both equal the no data value of that band.
e.g.
If nodata for an numeric raster is -9999, the following test will output nodata tiles as passed:
_band{0}.min = -9999
AND
_band{0}.max = -9999
So, only connect the Failed port to the writer will give you the desired result.
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