|
Dear Ferret Users,
I have ocean data at different layers. Can some one explain me why the operation from following commands is different? Let Anom1=Temp[x=-180:180@ave,y=-90:90@ave,k=2,d=1]-Temp[x=-180:180@ave,y=-90:90@ave,k=2,d=2] List Anom1 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Let Test=Temp[x=-180:180@ave,k=2,d=1]-Temp[x=-180:180@ave@ave,k=2,d=2] Let Anom2=Test[y=-90:90@ave] List Anom2 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Here Anom1 and Anom2 have different results! Is it because in first step having both x and y averaging at the same time involves x and y grids sizes and their weights according to their sizes whereas in 2nd it doesn't apply grid size accordingly? Is the first method more appropriate? Thanks Dogar |