[Gdal-dev] gdaladdo problems on an Mac OS X Panther

[Gross, Dorit (SDRN)]

Dear William,
Please excuse my late reply!

> -----Original Message-----
> From: William Kyngesburye [mailto:woklist at kyngchaos.com] 
> Sent: 22 March 2006 19:00
> To: gdal-dev at lists.maptools.org
> Cc: Gross, Dorit (SDRN); Frank Warmerdam
> Subject: Re: [Gdal-dev] gdaladdo problems on an Mac OS X Panther
> 
> 
> Poking around some more today.
> 
> - Wrong "StripByteCounts" - looks like that comes from a new  
> validation check in libtiff 3.8.0 (you should not get this 
> warning in  
> 3.7.4).  So, that spot tif may really be corrupt.  The SPOT tif you  
> made available, was that converted with the previous version of GIS  
> Libs when it seemed to work?

No, the SPOT tif was generated already with the new version. Would it make
sense to provide you with an image converted with the previous version? It
would be with overviews then.

> 
> I converted the HDF with the new versions (libtiff 3.8.1/GDAL 1.3.1)  
> and gdaladdo did not give these warnings.  In fact, I didn't get any  
> block errors either.  At least, up to level 32 overview.  As soon as  
> I add level 64, I get StripByteCounts warnings AND block errors, and  
> it's right away, BTW, not when it gets to the point of doing lvl 64.
> 

We use libtiff 3.8.0 that came with the Graphics Libs 2.2. We saw that
version 2.3 is available on your web page for Tiger, but if I am not mistaken
it is still the old version for Panther. I am sure there will be an upate,
but can you indicate already when it might be available to download? 

Many thanks!
Dorit


> When I add the average resampling, the StripByteCounts warnings  
> always come up and the block errors start at lvl 8.  But the block  
> errors only display when it gets to processing that level.  
> Just like  
> my previous tests with the old SPOT tiff.
> 
> 
> Still clueless why the LZW compression is causing bus errors and seg  
> faults in some cases.
> 
> 
> Any ideas yet, Frank?
> 
> -----
> William Kyngesburye <kyngchaos at kyngchaos.com> 
> http://www.kyngchaos.com/
> 
> Theory of the Universe
> 
> There is a theory which states that if ever anyone discovers exactly  
> what the universe is for and why it is here, it will instantly  
> disappear and be replaced by something even more bizarrely  
> inexplicable.  There is another theory which states that this has  
> already happened.
> 
> -Hitchhiker's Guide to the Galaxy 2nd season intro
> 
>