PROCEDURE: thm_part_omni_convert PURPOSE: Converts a particle distribution to omni directional by summing over angle. INPUTS: dist_data: A single particle distribution structure, or a particle distribution array from thm_part_dist_array OUTPUTS: Replaces dat with an omni summed particle distribution structure, or a particle distribution array from thm_part_dist_array Keywords: error: Set to 1 on error, zero otherwise NOTES: $LastChangedBy: pcruce $ $LastChangedDate: 2013-02-20 15:26:03 -0800 (Wed, 20 Feb 2013) $ $LastChangedRevision: 11594 $ $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/projects/themis/spacecraft/particles/thm_part_omni_convert.pro $