[mapserver-users] TIFFs and ECWs rasters get a monochrome output - why?

Mon, 23 Sep 2002 23:28:16 +0200

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Hi!

I'm using MapServer raster layers to present large background images.
When I got to large TIFFs (>200 MB) the server displayed an error =
message (unsupported image format or smth.).
I tried to download the GDAL support version (precompiled Win-32 =
binaries),
which also supports ECW (I have those TIFFs compressed to ECWs).
But when I fired it up - all the output turned out black-and-white, =
never mind the output format (GIF, JPG, PNG)!
Why is that happening? Is there a way to normally present large TIFFs or =
their ECW equivalents?

Thanks!

Alexander Gleyzer.

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content=3D"text/html; charset=3Dwindows-1255" =
http-equiv=3DContent-Type>
<META content=3D"MSHTML 5.00.2920.0" name=3DGENERATOR>
<STYLE></STYLE>
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<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Hi!</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3D"Arial (Hebrew)" size=3D2>I'm using MapServer raster =
layers to=20
present large background images.</FONT></DIV>
<DIV><FONT face=3D"Arial (Hebrew)" size=3D2>When I got to large TIFFs =
(&gt;200 MB)=20
the server displayed an error message (unsupported image format or=20
smth.).</FONT></DIV>
<DIV><FONT face=3D"Arial (Hebrew)" size=3D2>I tried to download the GDAL =
support=20
version (precompiled Win-32 binaries),</FONT></DIV>
<DIV><FONT face=3D"Arial (Hebrew)" size=3D2>which also supports ECW (I =
have those=20
TIFFs compressed to ECWs).</FONT><FONT face=3D"Arial (Hebrew)"=20
size=3D2></FONT></DIV>
<DIV><FONT face=3D"Arial (Hebrew)" size=3D2>But when I fired it up - all =
the output=20
turned out black-and-white, never mind the output format (GIF, JPG,=20
PNG)!</FONT></DIV>
<DIV><FONT face=3D"Arial (Hebrew)" size=3D2>Why is that happening? Is =
there a way to=20
normally present large TIFFs or their ECW equivalents?</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3D"Arial (Hebrew)" size=3D2>Thanks!</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3D"Arial (Hebrew)" size=3D2>Alexander =
Gleyzer.</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;</DIV></BODY></HTML>

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