[Chameleon] Large TIFF not rendering

[Delfos, Jacob]

Paul,

The release I have is cwc2-1.0.4-20031112. I am definitely using a map-file
(didn't hack it, at least not that bit). I had an ECW of around a 100MB
which I used initially. Because I wasn't happy with the graphic quality
(greenish planet mars-looking landscape, supposedly Australia) I fixed it up
in photoshop. Unfortunately, since the free ECW software can typically only
support up to 500MB, I couldn't save it back to ECW, so I converted to TIFF.
However, now chameleon won't load it (doesn't hang on it either, though).
All I changed is the filename in the DATA statement. The tif has a TFW file,
and I also created an ERS file for it; no effect. 

A better alternative to my problem would be a freeware program that
compresses >500MB to ECW. The new ECW sdk does it, but you'd need a license
to do it commercially (and visual C++).

What else could cause a TIFF not to display? I'm not using compression.

Regards,

Jacob


-----Original Message-----
From: Paul Spencer [mailto:pagameba@magma.ca] 
Sent: Thursday, 1 April 2004 23:07
To: Delfos, Jacob
Cc: 'chameleon@lists.maptools.org'
Subject: Re: [Chameleon] Large TIFF not rendering


Jacob,

there is not, as far as I know, any limitations on size of data files.

If you are using Chameleon 1.0.4 then you are accessing layers via WMS 
by loading a context file, unless you have hacked the source to do 
something different?  This would mean that the type of the file is 
essentially immaterial.  Can you explain what you are trying to do?

Delfos, Jacob wrote:

> Hi List,
> 
> I'm trying to display a geoTiff file of slightly less than a gigabyte,
> but it's not rendering. My TFW file is valid, because it shows alright 
> in ArcGIS. It is in the same projection as the mapfile. I couldn't find 
> any similar issues in the archive. Is there a limit on the filesize for 
> a TIF? I'm using Chamaleon version 1.0.4. The TIF is RGB, 24bit.
> 
> Thanks in advance,
> 
> Jacob
> 
> 
> *JACOB DELFOS
> SPATIAL INFORMATION ANALYST
> *Maunsell Australia Pty Ltd
> 629 Newcastle Street
> PO Box 81
> Leederville 6902
> Western Australia
> ABN 20 093 846 925
> 
> Tel     + 61 8 9281 6185
> Fax    + 61 8 9281 6297
> _jacob.delfos@maunsell.com_
> 

-- 
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|Paul Spencer                           pspencer@dmsolutions.ca   |
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|Applications & Software Development                              |
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