Re: [Geotools-gt2-users] VERY big GeoTIFF drawing

[Jody G. <jga...@re...>]

They made a BigTIFF "fake specification" recently for which you may want 
to look around. Creatively named BIGTIFF I think.

Two things:
1) just try it; grab the uDig tech preview
- http://udig.refractions.net/downloads/ECWDemo.win32.win32.x86.zip
- http://udig.refractions.net/downloads/jre/jre1.6.0_03.win32.zip  (in 
zip this JRE into the same folder; it contains imageio-ext for geotiff)
  (ImageIO is good about leaving the image on disk so it may be slow but 
you should see something)

2)  image moasic (break the image up using gdal or some imageio tools 
and use a shapefile to keep track of this parts)
- http://docs.codehaus.org/display/GEOTDOC/Image+Mosaic+Plugin
The above page links to most of the information I could find (including 
a tutorial of breaking up a large bluemarble image); I have been using 
the result (amazing!) but have not tried breaking up an image yet.

Cheers,
Jody
> Hi all:
>
> 	I'm trying visualize a 2GB (30000x20000px) GeoTIFF. I need to show a
> 1280x800px viewport of the image and be able to navigate through the
> full GeoTIFF.
>
> 	Is there any way to do this? 
> 	
> 		- Directly working with the GeoTIFF.
> 		- Dividing the GeoTIFF in small tiles of 256x256px and doing on demand
> loading? (How can I divide the GeoTiFF?)
>
> 	Can you point me in the right direction?
>
> 	Thanks in advance.
>
>   
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