I am using a GeoTiff raster data and trying to classify it. I was wondering what are the techniques that I can use in QGIS to do this?
The raster I have looks like
but I tried the reclassify tool in ArcMap and it looks like this
Now I wish do the similar classification using QGIS and I was able to acheive it by adding 9 entries in the Generate new Color map and clicking classify and applying it to the map. The image looks like this,
I again tried going to the Transparent tab and found that the No data value is -3.4e+38 and then clicked on Apply. Nothing changed. I then selected the Band1 in the Transparent band and then applied and the entire map disappears. Is it possible if I can display it in the same manner as the ArcMap's output?
Best Answer
Try the following:
These steps will apply your settings to the layer properties only--they will not be permanent.
If you need to reclassify your raster into discrete steps, try using the raster calculator, here are two links to get you started: GIS.se & GIS.se2 . Also, check out the 1-band raster color table for a different color ramp.