NAME: thm_ui_userdef PURPOSE: A widget that allows the user to define his own operator to be used on the data from a tplot variable, e.g., the user types in the string '2.0*!pi*q', and a temporary function is created which takes the data and does this multiplication. This is pretty experimental. CALLING SEQUENCE: thm_ui_userdef, gui_id INPUT: gui_id = the id of the main gui widget OUTPUT: none explicit, hopefully new tplot variables are created HISTORY: 7-jun-2007, jmm, jimm@ssl.berkeley.edu 19-oct-2010, jmm, Added a comment to trigger a new snapshot 30-jul-2013, jmm, Added another comment, to check SVN 27-jan-2014, jmm, Another SVN test comment, to check how SVN switch works, but this comment is different. If svn switch work as expected then this comment will be retained in my local SVN working directory. 12-Feb-2014, jmm, Testing SVN messaging 12-feb-2014, jmm, Another SVN test $LastChangedBy: jimm $ $LastChangedDate: 2014-02-12 16:01:10 -0800 (Wed, 12 Feb 2014) $ $LastChangedRevision: 14369 $ $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/projects/themis/deprecated/thm_ui/thm_ui_userdef.pro $