[gradsusr] Anomalies between different gridded datasets?

[Marshall Mdoka]

Hi All,

Could you please assist me with how to go about finding anomalies or show
biases between different gridded datasets. I want to compare my regional
model output to cru and cmap data. Simple script process gives me this
error:

Data Request Error: Invalid grid coordinates
  World coordinates convert to non-integer  grid coordinates
    Variable = precip.2  Dimension = 3
  Error ocurred at column 5
DISPLAY error:  Invalid expression
  Expression = pre-precip.2

What should I do or could someone help with a script that can work for me.

Kind regards

Marshall
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