Landsat is a no show

[Frank Warmerdam]

On 5/6/05, Kevin Grootendorst <kgrootendorst at baird.com> wrote:
> Hi,
> Trying to add an 8 bit landsat image to my mapfile, but it's showing up as
> all black.
> In ArcMap, it's black until I set the symbology to stretched - Histogram
> Equalize.
> 
> I can't find any documentation for setting a similar parameter in my map
> file.
> 
> Can anybody help me out?

Kevin,

Generally speaking I would suggest pre-stretching 8bit imagery 
externally with an imaging tool.  But if you want, you can force it
within MapServer using the SCALE processing option.   For instance
adding the following line to your raster layer. 

  PROCESSING "SCALE=AUTO"

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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