How to reverse the plot

[sushant puranik]

Hello
I have ECMWF data at 1.5 deg resolution which is arranged in reverse order
showing 50mb at surface and 1000 mb at top.
I want to plot the vertical cross section.
Is there any command by which i can reverse the plot showing 1000 mb at
surface and 50 mb at the top in GrADS.


Any suggestion is appreciated



Thank you



Sushant
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