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<DIV><FONT size=2>Robert,</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2> It is possible to use MrSID files as a data source for
MapServer. Personally, I don't recommend it due to the poor decompression
performance of MrSID. If you have the disk space convert the MrSID files
to uncompressed TIF instead (you can use GDAL's gdal_translate utility).
If disk space is not available use ECW (although I'm not sure of the compilation
status on unix).</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2> What do you get when you run GDAL's gdalinfo utility on
the MrSID file?</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Brent Fraser</FONT></DIV>
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style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=OudelohuisR@VERTIS.NL href="mailto:OudelohuisR@VERTIS.NL">Robert oude
Lohuis</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=MAPSERVER-USERS@LISTS.UMN.EDU
href="mailto:MAPSERVER-USERS@LISTS.UMN.EDU">MAPSERVER-USERS@LISTS.UMN.EDU</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, June 02, 2005 6:32
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [UMN_MAPSERVER-USERS] How to Use
MR.SID raster files in mapserver 4.4.2 ?</DIV>
<DIV><BR></DIV><BR>
<P><FONT face=Arial size=2>Hello,</FONT> </P>
<P><FONT face=Arial size=2>We have compiled version 4.4.2 of mapserver (and
the necessary libraries) from the sources on a unix box.</FONT> <BR><FONT
face=Arial size=2>It is now configured and working. There is however one
problem. </FONT><BR><FONT face=Arial size=2>We have a couple of Mr. SID files
and want to use these as a layer.</FONT> <BR><FONT face=Arial size=2>We
downloaded the libraries from lizardtech and recompiled GDAL with support for
Mr.SID</FONT> </P>
<P><FONT face=Arial size=2>We did tiled the Mr. SID files and configured a
layer. There are no error messages, but I see no data in the map.</FONT>
<BR><FONT face=Arial size=2>We tried to look at an individual Mr. SID file,
but then we got the following error :</FONT> </P>
<P><FONT face=Arial>MrSIDRasterBand::IRasterIO(): Failed to load image. scene
magnifGDALRasterIO() failed: drawGDAL(): Unable to access file. GDALRasterIO()
failed: drawGDAL() </FONT></P>
<P><FONT face=Arial size=2>A recompile of mapserver had no effect.</FONT> </P>
<P><FONT face=Arial size=2>The first question is: Is it possible to look at
Mr.SID rasters through mapserver ?</FONT> <BR><FONT face=Arial size=2>And the
second question is, if so, what's the trick ?</FONT> </P>
<P><FONT face=Arial size=2>Does anyone have knowledge on this subject and
willing to share his/her information ?</FONT> </P>
<P><FONT face=Arial size=2>Thanks in advance,</FONT> </P>
<P><FONT face=Arial size=2>Robert oude Lohuis</FONT>
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