NAME: spd_ui_time_derivative_options PURPOSE: Front end interface allowing the user to select options for performing time derivatives on data. CALLING SEQUENCE: return_values = spd_ui_time_derivative_options(gui_id, statusbar, historywindow) INPUT: gui_id: widget id of group leader statusbar: status bar object ref. historywindow: history window object ref. OUTPUT: return values: anonymous structure containing input parameters for dproc routine { swidth: Width of smoothing window, see IDL documentation on smooth() for more info setswidth: Flag indicating whether data is to be smoothed suffix: Suffix for new variable ok: Flag indicating success } NOTES: $LastChangedBy: $ $LastChangedDate: $ $LastChangedRevision: $ $URL: $