drawing a square on a xy-plane

To: ferret <ferret_users@xxxxxxxxxxxxxxxxxxx>
Subject: drawing a square on a xy-plane
From: Pam McDowell <pjmcdowell@xxxxxxxxxxxxxxx>
Date: Tue, 16 Nov 1999 15:30:03 -0600
Sender: owner-ferret_users

I have some data contoured on a XY lat-lon plane. I'd like to locate and
overlay a box to call attention to a portion of the plot. Are there
calls where you can give four corners and overplot a rectangle onto a XY
fill plot?

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