[R-sig-Geo] A new ASTER Global DEM data set

Barry Rowlingson b.rowlingson at lancaster.ac.uk
Fri Nov 20 13:09:35 CET 2009


2009/11/20 Yong Li <yong.li at unimelb.edu.au>:
> Dear all folks,
>
> I was informed in the 6th Digital Earth Conference that there is a better place to acquire high resolution of global DEM developed by ASTER, called GDEM with 30 m resolution, and fantastically free of charge. I tried some here (http://www.gdem.aster.ersdac.or.jp/) and it is really better than SRTM if you are outside USA.
> Hope you will enjoy the free meal.

 I just had a look at the tiles near me, and there's quite a bit of
noise and obvious artefacts - unless there really is a 2000m tower
about 180m across that I've not noticed in the middle of the
countryside!

I've not compared with SRTM yet...

Barry



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