I received a raster dataset from a colleague consisting of integer values between 1 to 4. The raster displays the correct range of values, but the attribute value contains only a count for values of '0', and no information about the other values that I know are also present based on the display.
This is a problem because I need to perform a series of manipulations and analysis on this data, but these have proved impossible because of this disconnect between how the data is displayed and how it is recorded in the table.
The following images hopefully show clearly the issue I am encountering. The display issues are not my main problem, but seem to symptoms of something happening with this file that I do not understand.