Hi Martin,
It's a question of the order of operations. Put the "GO mp_grid" before
the go mp_aspect and the set region, and it'll work fine. (or use SET
GRID SST instead of mp_grid.jnl). mp_stereographic_south defines the
mapping variables based on pseudo-variables "X" and "Y". Until Ferret
knows what grid these are going to be coming from, it assumes they're
from the abstract axes X and Y, which hav e values X=1,2,3,... and
Y=1,2,3... So the region y=-90:0 can't be applied to that,. and the
error comes in mp_aspect which tries to use the mapping variables to set
up the window.
use coads_climatology
go mp_stereographic_south
go mp_grid sst
set region/x=0:360/y=-90:0/l=1
go mp_aspect
fill/nolab/nokey/noaxes sst, x_page, y_page
or
use coads_climatology
go mp_stereographic_south
set grid sst
set region/x=0:360/y=-90:0/l=1
go mp_aspect
fill/nolab/nokey/noaxes sst, x_page, y_page
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