How can I show raster pixels with NoData value in QGIS?
In ArcMap there is a button to choose the color for the NoData value. Is there something like this in QGIS?
You can display raster NoDataValue in LayerProperties / Transparency tab by unchecking the "No data value" checkbox and "adding values manually" to the "transparent pixel list" table (green plus sign). After adding a value one need to change the "Percent Transparent" column to zero. After Applying this you can see the padded values as black.
Someone can correct me, but i believe this is not possible in QGIS (yet).
The Nodata value of a raster are per default always transparent.
Your only alternative would be to make a copy of your raster (Save-as rightclick menu or the
gdalwarp tool in the menubar) and leave the nodata-value unclassified.