Somehow I´m not able to make head of this. I´d like to extract/select the southern exposition-pixels of an aspect-raster, but these calculations don´t help me: whubers calculation gives out 7 classes of which 6 are actual aspect-classes which are in total 315° (his reference to his older replies in another thread doesn´t work for me). And Kristina´s calculations results in a raster, with a range of values between -1 and 359, which is somewhat crude not including 360. Maybe we can "reheat" the topic for ArcGIS 10.1 again?
Regards and thanks in advance,
Mathias