NAME: THM_AUTOLOAD_SPINMODEL.PRO PURPOSE: Given a tplot variable name, or an explicit time range, check to see whether a spin model is loaded. If not, or if the time range of interest is not completely covered, call thm_load_state to load the spin model and support data. CATEGORY: TDAS CALLING SEQUENCE: thm_autoload_spinmodel,probe='a',tvar='tha_mom' INPUTS: probe: A scalar character, one of 'a' through 'f', specifying which probe's spinmodel to check. tvar: A tplot variable name, defining the time range of interest. trange: A double precision two element array, defining the time range of interest. One of tvar or trange must be specified. OUTPUTS: Support data and a spin model are loaded, if necessary.