I am trying to invert a raster in ArcGIS (10.5), and have used the following expression (from esri support page) in the raster calculator:
invert = (("raster_file" - maximum) * -1) + minimum
However, the high and low values of the new raster are slightly different from the original raster:
original low:0.1551740020513535 original high:0.8855689764022827
new low:0.1852769702673 new high:0.84637397527695
Why is this happening, and what can be done?