How to use Nasa Blue Marble raw images

[Frank Warmerdam]

On 1/31/06, Paco Regodón <mapserver at meteologica.es> wrote:
>  I still need to georeference the image. How can i fill the SRS and
> GeoTransform labels?

  <SRS>WGS84</SRS>
  <GeoTransform>-180,  0.00416666666, 0, 90, 0, -0.00416666666</GeoTransform>

>  Also, is there some tool to convert this too big file into a tile of
> smaller files?

You could use multiple gdal_translate invocations to pull out
different subwindows using the -srcwin option.   But it might
be better to translate it to one big file in an internally tiled
format, like Erdas Imagine format.  You also might want
to build overviews for it.

I would add that the big blue marble image is well suited
to handling as a jpeg2000 or ecw file.   I believe one or more
of the big blue marble images are available in ECW format
from http://www.geotorrents.org .

Best regards,
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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