Re: range of values taken on by a scalar

• To: John J Brecht <john.brecht@xxxxxxx>
• Subject: Re: range of values taken on by a scalar
• From: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>
• Date: Wed, 08 Mar 2000 07:00:41 -0600

Hi John,

> how do you find the range of values taken on by an arbitrary Scalar?  It
> seems that ScalarMap needs to do this, but I can't find exactly how...

Its done a by a call to Data.computeRanges() from
DataRenderer.prepareAction().  As long as you don't call
ScalarMap.setRange(), you can access the range by a call
to ScalarMap.getRange(), after data have been transformed
for display.  You can use a DisplayListener to wait for a
DisplayEvent.TRANSFORM_DONE.

Cheers,
Bill
----------------------------------------------------------
Bill Hibbard, SSEC, 1225 W. Dayton St., Madison, WI  53706
hibbard@xxxxxxxxxxxxxxxxx  608-263-4427  fax: 608-263-6738
http://www.ssec.wisc.edu/~billh/vis.html

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    • From: John J Brecht