Re: polar stereographic projection

To: xdz@xxxxxxxxxxxx (Xiangdong Zhang)
Subject: Re: polar stereographic projection
From: "E. D. (Ned) Cokelet" <Edward.D.Cokelet@xxxxxxxx>
Date: Fri, 11 Feb 2005 16:57:33 -0800
Cc: Ferret Users <oar.pmel.ferret_users@xxxxxxxx>
In-reply-to: <20050212002815.AE17940D28D@salix.frontier.iarc.uaf.edu>
References: <20050212002815.AE17940D28D@salix.frontier.iarc.uaf.edu>
Sender: owner-ferret_users@xxxxxxxxxxxxx

You can use Ferret's curvilinear mapping procedures for this. Let's suppose you want to contour variable v1 which is on a rectangular i,j grid that is not necessarily a global lat,lon grid, but you also have lat and lon on that same rectangular grid. Then the following will do the job

contour v1,lon,lat

Your other data set with variable v2, already on a lon/lat grid, is contoured by

contour v2
------------------------------------------------------------------------ ------------------
Edward D. (Ned) Cokelet, Ph.D. Edward.D.Cokelet@noaa.gov
NOAA/PMEL off: (206) 526-6820
7600 Sand Point Way NE fax: (206) 526-6485
Seattle, WA 98115-6439

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