Which bluemarble ftp file?

[Wbdsgnr]

Since I can't find a good server (faster then jestr ftp ) to download a 32k or 64k VT for the earth, I was thinking, I'll make one myself. But which file of the nassa ftp of 'blue marble' should I download for just the earthmap without clouds and stuff, I have a bandwith limit so I can't just download everything Anyone?

[Wbdsgnr]

Uhm, I meant this ftp server
ftp://mitch.gsfc.nasa.gov/pub/stockli/bluemarble/

But it seams I should download one of those topo files? Jestr? You made that 64k map

[jestr]

It depends what texture you want - there are a few different options
1.Shaded Earth texture-MOD09A1.E.interpol.cyl.retouched.topo.3X21600X21600.gz and
MOD09A1.W.interpol.cyl.retouched.topo.3X21600x21600.gz
2.Flat Earth texture -
MOD09A1.E.interpol.cyl.retouched.3x21600x21600.gz and
MOD09A1.W.interpol.cyl.retouched.3x21600x21600.gz
3.Shaded Earth texture + Ocean depths -
MOD09A1.E.interpol.cyl.retouched.topo.bathymetry.3x21600x21600.gz and
MOD09A1.W.interpol.cyl.retouched.topo.bathymetry.3x21600x21600.gz
I'd suggest starting with the first of these-when you unzip you must rename the file extension to RAW format then you should be able to open it in Photoshop or similar,All the best Jestr

[Wbdsgnr]

Thanks! I'm downloading the first two right now, about 2:30 hours left And then lets slice some pieces One little question For making level 0 I should first resize the image to 1024x512? and cut it in two pieces, level 1 2048x1024, level 2 4048x2048, level 3 8196x4048 etc.? But then, If I would like to make like 128k tile for my country, how would I know which tile it is?

[jestr]

Yes you must resize the texture for every level.There is a useful tool here
http://www.shatters.net/~jim/files/VT-tile-calculator_2.zip
for calculating tile numbers/position,I havent used it so I dont know what its like to use,any other problems let me know,see also Bob Hegwoods website for an introduction to Virtual Textures (part of Celestia Webring),Jestr

[Wbdsgnr]

Hmm, photoshop 7 can't handle images larger then 30.000x30.000 pixels, so how could I attach those 2 images of 21.600x21.600 each? Or did you just left them as 2 sepperate files? And with gimp/linux it takes ages to just look at those pictures...

[jestr]

I used them to make a Virtual texture which means chopping them up smaller so it didnt matter,Jestr