Hi ,

I am new to this software and  have no clue how to use this .
I am hoping that you could help me regarding my present problem . I have an
image attached and I want to extract the coordinates with age data  for the
region that is within the white polygonal region.I have a file that contains
the dataset with corresponding age data  for the entire world . How can I
extract data only for my region of interest?

Please help.

Thanks,
Tannistha

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