Hi,
One more thing, save some more space and compress the overviews as well. It is
documented in http://www.gdal.org/gdaladdo.html
If image itself is compressed with DEFLATE, use --config COMPRESS_OVERVIEW
DEFLATE.
-Jukka Rahkonen-
Jonathan Moules wrote:
You can simplify your process because you already use -a_srs parameter ("assign
spatial reference system") . Therefore it should not be necessary to create all
those .prj files at all.
Gdaladdo with resolution 1 does not make sense because it means creating an
overview with original resolution. I hope that gdaladdo quitly skips it,
otherwise you are getting all too large files.
Speaking from experience (I did this myself long ago before understanding) -
gdaladdo happily creates the pyramids at level 1. So you end up with a file
that's double it's original size!
It is also good to know that gdaladdo -clean does not remove old overviews
physically and filesize will not shrink.
Yup. It just removes the links to the overviews. I found that out the hard way
too. :-)
The lines in my last email have what seems to be the optimal - everything is
inside a single file and the result is optimised for GeoServer.
I've tested now it on the OS 50k for the entire country - there's no need to
split into two files and image mosaic. The resultant file is only about 2.5GB
pre overviews (which usually add another 30%). So just loading that file as a
regular single GeoTiff should be fine.
Cheers,
Jonathan
This transmission is intended for the named addressee(s) only and may contain
confidential, sensitive or personal information and should be handled
accordingly. Unless you are the named addressee (or authorised to receive it
for the addressee) you may not copy or use it, or disclose it to anyone else.
If you have received this transmission in error please notify the sender
immediately. All email traffic sent to or from us, including without limitation
all GCSX traffic, may be subject to recording and/or monitoring in accordance
with relevant legislation.
------------------------------------------------------------------------------
"Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE
Instantly run your Selenium tests across 300+ browser/OS combos.
Get unparalleled scalability from the best Selenium testing platform available
Simple to use. Nothing to install. Get started now for free."
http://p.sf.net/sfu/SauceLabs
_______________________________________________
Geoserver-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/geoserver-users
