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Earth Bathymetry Question

Posted: 12.08.2007, 05:00
by Ozark
Hi all

I just downloaded the Earth Bathymetry map found here:
http://snowy.arsc.alaska.edu/nasa/topog ... 801.bin.gz

I followed step by step the directions according to this post using Fridgers code:

http://www.shatters.net/forum/viewtopic.php?t=10071&start=15

And this is the result. I am no expert on Bathymetry, but this looks nothing like the other images i have seen.

Image

Image

I've tried one 16k png image and tried virtual textures with the same exact results :(

Has anyone had the same issue,or is this actually what it is supposed to look like? I have tried 3 times with the same results.

Ozark

Posted: 12.08.2007, 10:37
by cartrite
I followed step by step the directions according to this post using Fridgers code:

http://www.celestiaproject.net/forum/viewtopic ... 1&start=15

And this is the result. I am no expert on Bathymetry, but this looks nothing like the other images i have seen.


There is a typo in the command Fridger used on the above post. Try

Code: Select all

gzip -cd < gebco_bathy.21601x10801.bin.gz | resc2pow2 21601 1 | nms 6378.140 16384 2.7 > gebco_bathy_nm16k.ppm


EDIT: I repaired the typo on this post to avoid confusion SORRY :oops:

cartrite

Posted: 12.08.2007, 10:44
by t00fri
cartrite wrote:
I followed step by step the directions according to this post using Fridgers code:

http://www.celestiaproject.net/forum/viewtopic ... 1&start=15

And this is the result. I am no expert on Bathymetry, but this looks nothing like the other images i have seen.

There is a typo in the command Fridger used on the above post. Try

Code: Select all

gzip -cd < gebco_bathy.21601x10801.bin.gzw2 21601 1 | nms 6378.140 16384 2.7 > gebco_bathy_nm16k.ppm


cartrite

There is typo in the command cartrite used on the above post ;-) . Try

Code: Select all

gzip -cd < gebco_bathy.21601x10801.bin.gz | resc2pow2 21601 1 | nms 6378.140 16384 2.7 > gebco_bathy_nm16k.ppm 



Bye Fridger

Ozark wrote:I followed step by step the directions according to this post using Fridgers code:

It's always good to remain critical ;-)

Posted: 12.08.2007, 10:52
by cartrite
Thats what I get for copying from my terminal without checking. :oops: Shame on me :wink:

Posted: 12.08.2007, 15:18
by Ozark
Thank you Gentleman! :D

It's amazing how 1 pixel can make such a huge difference!

Ozark