How to get the “absolute value” of a raster cell in QGIS?

Question

I have a raster map (-100 to +100) and I need to get all the minus values as absulute values (-100=100; -99=99...). How can I do this? Is it something like reclassify?

Answer 1

You could use the Raster Calculator to do this, square the pixel values and then extract the roots. Something like this:

sqrt ( myraster@1 * myraster@1 )

Regards, Nick.