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.
Best answer by jdh
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How to filter out raster (tiles) that contain only nodata?
+22
- Contributor
- 1959 replies
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30 April 2018
- Best Answer
If you use the RasterBandMinMaxExtractor, you can test if both the min and max values equal the nodata value.
+2
- Safer
- 327 replies
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30 April 2018
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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