NAME: thm_roi_bar PURPOSE: creates the roi bar for overview plots CALLING SEQUENCE: p = thm_roi_bar(in_data) INPUT: in_data: the name of the roi variable to be plotted(generally something like 'thb_state_roi' OUTPUT: p = the variable name of the roi_bar, set to '' if not successfule HISTORY: 2007-02-28 pcruce@ssl.berkeley.edu $LastChangedBy: pcruce $ $LastChangedDate: 2008-01-25 15:07:47 -0800 (Fri, 25 Jan 2008) $ $LastChangedRevision: 2315 $ $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/thmsoc/trunk/idl/themis/common/thm_sample_rate_bar.pro $