I currently face a problem about the reclassified raster file. The original TIF file was OK and I can display it. However after I reclassified it(the old one has too many categories) and reduce color to 4, it won't display correctly. Also if exported to png file, the png file is totally black. Which is shown in the zip file. Can anyone give me some help? Thank you!
I reduce pixel range from 255 to 4 is because of that I will process the image and want some sharp edges without colors in the middle