[mapserver-users] SCALE=AUTO applied to current view or entire layer?

[John Maurer]

> I'm quite surprised at the behavior you report.  MapServer *should* be
> computing a minimum and maximum for scaling purposes based on the data
> loaded for the particular map draw request, not the layer as a whole.

Hi Frank,
Thanks for your prompt reply! And sorry for the false alarm. Your 
explanation helped me understand what's going on behind the scenes in 
MapServer for the SCALE=AUTO directive, and your suspicion was right 
about needing smarter min/max computation. It would be nice if there was 
a simple linear 2% contrast stretch available (cut off the least and 
greatest 2% of values), depending on how bad that slows things down. Is 
there some way to make this a request for some future version of 
MapServer? Thanks again!!
Cheers,
John

-- 
John Maurer
Web/Database Applications Engineer
National Snow and Ice Data Center (NSIDC)
University of Colorado at Boulder
http://cires.colorado.edu/~maurerj
+1-303-586-1677
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"Without geography, you're nowhere!"