I have a one band grayscale image. It has values 0-63 within the band. I need to isolate some of those values. Is there a way to do this in the raster calculator?
QGIS 2.2//Windows 7
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Aaron, thank you. I was actually doing the calculation part properly, but I forgot to go into the new raster file, style, and select load min/max. My original problem was that I did not do this, therefore all I saw was a black image on the screen. Problem solved.– ianCommented Apr 3, 2014 at 19:33
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this is not an answer to your question. Please either edit your question or add this as a comment to Aaron's answer. Also, if Aaron's answer solved your problem, please accept his answer.– FezterCommented Apr 4, 2014 at 0:20
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1 Answer
You will want to use the following type of expression:
("YOUR_IMAGE@1" > 150) * "YOUR_IMAGE@1"
The resulting image of an arid woodland shows only the pixel values > 150 and all other values are displayed as 0 (black).
