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plot with masked values

• To: mathgroup at smc.vnet.net
• Subject: [mg52619] plot with masked values
• From: "m. r. schaferkotter" <schaferk at bellsouth.net>
• Date: Sat, 4 Dec 2004 04:07:58 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

 greetings:

 in another system the plotting paradigm allows one to use special values (Nan)
 in the locations of say a land mask. the color values of the data is
 not affected by this.

 for example, we might have a 2d temperature plot which contains land
 values. by designating the land values as Nan, the plot paradigm is
 smart enough to scale the color over the non-land values.

 how is this functionality accomplished in Mathematica?

 m. r.