Adrian Custer ha scritto:
Hey all,
I'm trying to digest a 1/2 global land cover tiff. The source is:
http://earthobservatory.nasa.gov/Newsroom/LCC/
and the specific file is
http://earthobservatory.nasa.gov/Newsroom/LCC/Images/lcc_east_1km.tif
nothing on my machine can open this file. Is there a way to add the
location information to the file so uDig can open it? Also, is there a
way to pre-tile the file into one of those image pyramids I keep hearing
about?
With current uDig, you'll have hard times, 25MB is a bit big for it,
give it plenty of memory. And you have to write a .tfw file for it,
see some docs here:
http://www.omg.unb.ca/~jonnyb/processing/geotiff_tifw_format.html
http://www.gdal.org/frmt_various.html#WLD
In the future, with a uDig that uses geotools 2.3.x or trunk, it's going
to be relatively quick, especially if you do use gdal_translate to pre
tile it, and gdaladdo to add overviews to it.
Pyramids, forget about them, the pyramid generator is broken at the
moment, but besides this, you don't need a pyramid for such a "small"
file (it's only 25MB).
Cheers
Andrea
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