[GRASS-user] r3.map.calc

[goldneaa at onid.orst.edu]

If I have created a 3-Grid and I want to take an average of the  
y-coordinates, keeping the x,z constant, what equation would I need to  
create in r3.map.calc in order to create this.  In other words, I have  
lat, long, and time.  I want to create a map that is latitude versus  
time(temp).
Thanks,
Aaron