Author Topic: Working with Planetary Data files  (Read 2103 times)

Offline onebigmonkey

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Working with Planetary Data files
« on: January 29, 2017, 08:26:05 AM »
I've been having fun recently getting to grips with 2D and 3D rendering of lunar images taken by (eg) India's Chandrayaan and Japan's Kaguya probes.

On of the things I've argued with conspiracy theorists who have some sort of beef with NASA is that other space agencies are available, and all they have to do is put some effort in to see how their lunar images compare with NASA's in general and Apollo in particular. To help people do that I've written three pages covering China, India and Japan:

http://onebigmonkey.com/tuts/chand/chand.html

http://onebigmonkey.com/tuts/jaxa/jaxatut.html

http://onebigmonkey.com/tuts/china/chintut.html

Sadly while I have all of the 2D tiles from China's probes I neglected to download the DEM tiles when they were up, so the 3D element of that page is missing. Hopefully they'll bring them back up one day.

The idea at some point is to do some proper 3D renderings of the Apollo landings sites and bring all those pages together as a tutorial section.

Meanwhile, for anyone with some spare time and a decent amount of hard disk space, have fun :)

If anyone spots any obvious howlers or it isn't clear then do let me know.

Offline onebigmonkey

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Re: Working with Planetary Data files
« Reply #1 on: February 12, 2017, 06:13:11 PM »
So I've been having lots of fun with these, and have added LRO images to the list. The front end to all of the pages is here

http://onebigmonkey.com/tuts/tuthome.html

and you might like to check out the dropbox link at the end to have a look at the 3D models I've been doing of the landing sites.

The China page also has dropbox links to the relevant Chinese tiles covering the Apollo sites, seeing as their download pages seem to be pretty much dead.

Offline bknight

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Re: Working with Planetary Data files
« Reply #2 on: February 12, 2017, 07:38:49 PM »
How does one open them?  I selected and downloaded the first A14 file but don't know how to open the files?
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Offline onebigmonkey

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Re: Working with Planetary Data files
« Reply #3 on: February 13, 2017, 01:43:37 AM »
They are compressed with winrar, and once uncompressed you open the .html file that's in there :)

(I added that explanation to the page - it should have been there).
« Last Edit: February 13, 2017, 01:59:44 AM by onebigmonkey »

Offline bknight

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Re: Working with Planetary Data files
« Reply #4 on: February 13, 2017, 04:59:29 AM »
Yes I downloaded the file and extracted:
3D1 folder containing an html file but my security settings won't open it because of scripts ActiveX controls, I'll reduce the security and look at the instructions.

There are 3 .js files and a .css and more .js files in folders.
Truth needs no defense.  Nobody can take those footsteps I made on the surface of the moon away from me.
Eugene Cernan

Offline onebigmonkey

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Re: Working with Planetary Data files
« Reply #5 on: February 13, 2017, 06:12:11 AM »
That's it :)

The 3D views are generated using Qgis2threejs in the GIS package QGIS. As the plugin name suggests it's javascript based. The JAXA page describes how it works if you want to generate your own 3D views using it.