[gradsusr] A question on ROTLL and ROTLLR for irregular grid

[James Song]

I have tried to plot the fields in GrADS, but failed. I used 


pdef 90 65 ROTLLR 180.0 53.0 0.6055 0.6281 -125.61 11.92
either ROTLL or ROTLLR doesn’t work properly, I only get a small portion
of the plot. 
The shaded is the one with pdef, the contour is when I took off the pdef
line in the ctl file.

I couldn't find much about how to use ROTLL, please help. Thanks a lot.


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