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I have a two bands raster. I need to reclassify it following the rules "if band 1 = x and band 2 = y the new value will be 1", "if band 1 = a and band 2 = b the new value will be 2", ecc... How can I do this?

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For example use Raster Calculator:

When a condition is true, it evaluates to 1, so

when ("Virtual@1"=500) is true and ("Virtual@2"=200) means 1*1*1=1, and add more conditions with +

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