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LOLA PDS release #5
zeBeamer
post Feb 25 2011, 06:50 PM
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Hi All,

Some LOLA products for the PDS release (#5), which will be officially out on March 15, 2011, are now available on the LOLA PDS node !
Label files and documentation are still being worked out, but I thought it'd be good to post (and some of you know we usually put those products online a bit early)

The data released are from July 13, 2009 to January 31, 2011.
There are EDRs/RDRs (individual profiles) for the courageous ones. But most of you will prefer the map products ( http://imbrium.mit.edu/DATA/LOLA_GDR/ ).
In addition to IMG products (int16), there are JP2 files (GeoJPEG2000) which are compressed (lossless) and contain projection information. If you use a GIS programs, that should be helpful. The attached XML files contain the statistics already, which could save you 10+ minutes for the bigger grids upon loading. (Due to PDS filenaming conventions, you need to rename them to file.JP2.aux.xml for that to work properly; tested on ArcGIS).
And keep in mind that in both those formats, the data were digitized at a 0.5m granularity, so you will need to divide the values by 2 to get the actual heights (in meters).

Also of interest for visualization are the updated LOLA texture packages for Celestia.
ZIP files here: http://imbrium.mit.edu/EXTRAS/CELESTIA/
and a few screenshots:







It'd be great also to know how this community is using the LOLA data, so please reply if you do:
1- Experimental Data Records (EDR) [raw telemetry]
2 - Reduced Data Records (RDR) [altimetric profiles]
3 - IMG Gridded Data Records (GDR) [maps]
4 - JP2 Gridded Data Records (GDR) [maps]
5 - Celestia Virtual Textures


Enjoy !!

Erwan

EDIT 2011.02.25 08:30pm EST
I realized there was a mistake in the level 0 normal map. (The files were the same as the topography texture...)
The ZIP files have been updated. In case you downloaded the "old" version, you can download the two level 0 files here instead of re-downloading the ZIP.
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Phil Stooke
post Feb 25 2011, 07:19 PM
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Very nice! At the bottom of the Celestia page you have the non-tiled false-color topography images. Could b/w shaded relief versions be added to that?

(EDIT - actually what Doug asks for works for me as well)

Phil


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... because the Solar System ain't gonna map itself.
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djellison
post Feb 25 2011, 07:24 PM
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QUOTE (Phil Stooke @ Feb 25 2011, 11:19 AM) *
Could b/w shaded relief versions be added to that?


And simple unshaded greyscale 16 bit images (png/tif or similar?)
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zeBeamer
post Feb 25 2011, 08:37 PM
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QUOTE (Phil Stooke @ Feb 25 2011, 03:19 PM) *
Could b/w shaded relief versions be added to that?

I added shaded-relief images from 4 different lighting azimuths.

QUOTE (djellison @ Feb 25 2011, 03:24 PM) *
And simple unshaded greyscale 16 bit images (png/tif or similar?)

That's very close to the raw IMG files, no? I added grayscale images (PNG, JPG).


Erwan

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Phil Stooke
post Feb 25 2011, 09:50 PM
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Many thanks for those!

Phil


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... because the Solar System ain't gonna map itself.
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JohnVV
post Mar 1 2011, 06:40 AM
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i am checking them for addition to the celestia motherload as i type
http://celestiamotherlode.net/

in a few days they will also be there
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mhoward
post Mar 1 2011, 03:13 PM
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QUOTE (zeBeamer @ Feb 25 2011, 12:50 PM) *
It'd be great also to know how this community is using the LOLA data, so please reply if you do:


Thanks for those, Erwan. I use the RDRs to generate my own surface normal map (see the previous thread). I'm looking into upgrading my network connection, as currently it takes me about a week to download each update!
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Mars3D
post Mar 8 2011, 10:46 AM
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Thank you for releasing this early Erwan.

I am using the rdrs to produce datasets, maps and animations.

Here is an animation using the LOLA PDS release #5 data.
http://www.youtube.com/watch?v=h2GgbcRL0nA
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charborob
post Mar 8 2011, 04:40 PM
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Great animation! Keep them coming.
Did you notice the pinnacle-like feature in the lower right corner at the beginning of the animation? (see image capture below) Is that real or a processing artifact?
Attached Image
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Mars3D
post Mar 8 2011, 04:57 PM
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Its almost certainly bad data. I automatically filter some of the bad data out but it doesn't catch everything.
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joertexas
post Mar 10 2011, 05:03 AM
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UNNECESSARY QUOTING DELETED

How are you creating the 3D flybys?

JR
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Mars3D
post Mar 10 2011, 07:54 PM
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UNNECESSARY QUOTING DELETED

I 'm using the same rendering software I wrote for visualising the Mars HiRISE data.
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joertexas
post Mar 10 2011, 11:39 PM
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UNNECESSARY QUOTING DELETED

I've been looking for a 3D map of the lunar north pole, specifically, a 30km radius centered at 89.55N 30W. I've downloaded the LOLA files and viewed them with LTVT, but that's as far as I've gotten with it.

Is your software an adaptation of something that's available online, or is it a custom program?

JR
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JohnVV
post Mar 11 2011, 02:10 AM
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any dem viewer will work
the lola file is in 16bit singed format
the lbl has a off set to use that sets 0.5 Meters increments and in radii in Meters

even the old "3DEM" will work

check out
Virtual Terrain Project
http://vterrain.org/
http://vterrain.org/Packages/NonCom/

there is also "Integrated Data Viewer " a java application
http://www.unidata.ucar.edu/software/idv/
http://www.unidata.ucar.edu/software/idv/d.../3DSurface.html
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joertexas
post Mar 11 2011, 02:37 AM
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I've tried many of the standalone programs, but I don't know enough about how to manipulate the data to produce images. I'll try the Java program, though.

When I select the LOLA file, I get this error:

Reading DEM: D:\My Documents\Space Mining Info\LTVT\LTVT_v0_21_3_1_full_version\LDEM_875N_10M.IMG
Data object "D:\My Documents\Space Mining Info\LTVT\LTVT_v0_21_3_1_full_version\LDEM_875N_10M.IMG"
not compatible with "dem" data family



JR
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