[Mapserver-users] Using tiffs without GDAL

[Ed McNierney]

"I'd like to avoid having to use GDAL if possible..."

Why?  It is the preferred tool in MapServer to do the things you want to
do.

	- Ed

Ed McNierney
President and Chief Mapmaker
TopoZone.com / Maps a la carte, Inc.
73 Princeton Street, Suite 305
North Chelmsford, MA  01863
Phone: (978) 251-4242  Fax: (978) 251-1396
ed at topozone.com


-----Original Message-----
From: AMC Story [mailto:s9646183 at sms.ed.ac.uk] 
Sent: Saturday, August 02, 2003 2:41 PM
To: mapserver list
Subject: [Mapserver-users] Using tiffs without GDAL

Hi everyone,

I'm a little confused about the types of raster that can be displayed
without 
having to compile mapserver with GDAL.  From the documentation, I took
it that 
only grayscale tiffs could be displayed, but without GDAL I managed to
follow 
the tutorial example which displays a colour tiff image.  Is the fact
that this 
image is colour indexed vs rgb significant here?  (not that I know what
colour 
indexed means.....!).  

Also, and apologies if this is slightly off topic, but I was hoping
someone 
might know how I could convert a ArcInfo grid (created from the etop05
dataset) 
to a colour tiff of the type that the basic mapserver can display.  My
problem 
is that even trying to convert to a grayscale image doesn't seem to be
working 
(I'm using the gridimage command in ArcInfo), as the output image has
lost all 
of the height variation over the land and displays them as solid black.
Has 
anyone does this kind of thing before?  I'd like to avoid having to use
GDAL if 
possible, but I really would like to be able to display a colour image
as a 
background layer.

Any advice would be really appreciated as this problem has been driving
me mad 
for days!

Thanks once again for all your help and support - it really has been
invaluable.

Ali
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