Cube Generator Update
Todd Bradley
January 5, 2012
Update Since June, 2011 Meeting
• Version for PDS is now able to accept both net
cdf data files and pds .dat data files
• Completed cube generator chapter for users
guide
• Online PDS version of cube generator is
awaiting geometer
Cube Generator Chapter
• A useful list in chapter that defines all of the
geometrical variables produced by cube
generator
• Since Fall, 2011 I see a need to clarify a few of
the geometrical quantities
– Units of distance
– Coordinate systems
Example of limb drift during Titan
observation
• Integration time = 240 seconds
• Use “rayheight” from cube generator to show
drift of field of view.
• Cube generator returns datastruct2_initial,
datastruct2, datastruct2_final, which is the
geometry at the initial, middle and final times
of an integration period, respectively.
Beginning of integration
Line of sight
(spatial pixel 31)
Rayheight
Line of sight (spatial pixel 31)
Rayheight
S/C
S/C
End of integration (240 seconds)
Line of sight (spatial pixel 31)
Rayheight
S/C
Time = 240 seconds
Time = 0
Summary
• No new updates to geometrical variables or
returned data values
• Open to suggestions and requests for
additional variables and/or definitions