Plotting Black and white figures in GrADS

[Arlindo Meque]

Dear all,
 
I want to produce black and white figures, for that purpose I tried the “Set display color greyscale white” option. But this command does not affect the hardcopy output, so I am not able to save the output in black and white. 
 
 
Help is needed. 
 
Arlindo 


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