[Mapserver-users] Gdaladdo

[Omry Yadan]

As I suspected...
I did not properly benchmark MapServer yet, but I noticed that sometimes
image generation takes much more time for images in high 'zoom'.
As long as 8-9 seconds some times, compared to 1-1.5 second for other maps..
Why do you think that is? Any suggestions how to improve it?


-----Original Message-----
From: Frank Warmerdam [mailto:warmerdam@pobox.com] 
Sent: Tuesday, October 21, 2003 4:30 PM
To: Omry Yadan
Cc: mapserver-users@lists.gis.umn.edu
Subject: Re: [Mapserver-users] Gdaladdo

Omry Yadan wrote:
> How do I use gdaladdo?
> Also, where can I find gdaladdo that supports ECW raster data?
> Any examples would be appreciated.

Omry,

The gdaladdo utility is briefly described at:

   http://www.remotesensing.org/gdal/gdal_utilities.html

However, there is no need to use it for .ecw files as they are supposed
to be able to access reduced resolution images efficiently already.  In
fact, gdaladdo won't work for .ecw files.

Best regards,
-- 
---------------------------------------+------------------------------------
--
I set the clouds in motion - turn up   | Frank Warmerdam,
warmerdam@pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | Geospatial Programmer for Rent

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