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I have downloaded ERA5 data and am trying to plot temperature variable. The problem I am facing is that even after providing a 2D area for plotting, ferret is giving an error saying that the region must be 2D

yes? fill t[k=1,l=1]
 **ERROR: dimensions improperly specified: must be a 2D region
      CONTOUR/FILL t[k=1,l=1]
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You need to use the following syntax

yes? fill 't'[k=1,l=1]

This is because ferret treats t variable name as time and to distinguish your variable name (if it is the same in the file), you have to provide it in double quotes.

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