building a 3d world globe

[jumpjack]

Indeed I don't use Linux.

Anyway I have some issues using that page with tablet: a very large map of pluto (4K or 8K) is not accepted.
The maps which are accepted work... but I can't download the result, as I don't have a "right click" available on the tablet! And also "save page" is not available. Long-tap does not work.
So, no way to save the result.

I also tried running the script locally, but it lacks lot of dependencies, as I just saved the page; I'd need a zip package containing all the sources...

[johnvanvliet]

from the netpbm sourceforge page
http://netpbm.sourceforge.net/

a windows version is here "NetPBM-10.68.1-win-14.11.01.zip"
https://onedrive.live.com/?cid=9E7DB...359A93F0!28283

and the user manual is here
http://netpbm.sourceforge.net/doc/

for Pluto

there is a 18630x9315 nasa early map of Pluto
http://photojournal.jpl.nasa.gov/catalog/PIA19858
this is a Black and White image

a 4096x2048 Color map of Pluto 12 gore image

[jumpjack]

Thanks, but I'm in trouble accessing the Win32 version (but I found official page for Win32 version) and last image.

In the meantime, found an interesting document about globe building and related projections:
https://www.mapthematics.com/Downloads/Gores.pdf

[jumpjack]

I experimented a bit with ppmglobe. Man page is wrong, syntas is NOT this on Windows system:
ppmglobe [-background=colorname] [-closeok] stripcount [filename]

Correct syntax is:
ppmglobe [-background=colorname] [-closeok] stripcount <inputfile.ppm >outputfile.ppm

ppm format can be obtained using IrfanView. ppmglobe APPARENTLY (according to MAN) only supports ppm, pgm, or pbm formats, but it actually also supports PNM format, and the package includes PNM converters.

So if you have a PNG image these are the steps:
pngtopnm image.png >image.pnm
ppmglobe 12 <image.pnm >gores.pnm
pnmtopng <gores.pnm >gores.png

But I think ppmglobe does not create the needed "bleeds" described in the cited pdf, i.e. the gores are not overlapping so it could be a bit difficult to properly glue them.