Vou can do it with:
(( "3_NDFI@1" <= 0 ) * 0) + (("3_NDFI@1" > 0)*5)
Claas
Am 09.04.2015 um 00:09 schrieb Giacomo Fontanelli:
Dear forum
I use QGIS 2.8.1.
I have a raster map, Float32, pixel values range from -0.7 to 1.
I Would like to make a map with pixel having only two values:
pixels with values <= 0 should be 0
pixels with values > 0 should be 5.
the sintax
( "3_NDFI@1" <= 0 ) =0 AND ( "3_NDFI@1" > 0 ) =5
doesn't work because it produces a map with only 0 values.
In order to reach my goal I must do
( "3_NDFI@1" <= 0 ) =0 AND ( "3_NDFI@1" > 0 ) =1
then multiply result by 5.
What's the problem?
Is it possible to fulfil the purpose with only one raster operation?
Thank you very much
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