PROCEDURE: MVN_SWIA_MINVAR_BV PURPOSE: Do minimum variance on magnetic field and rotate velocity to same frame INPUT: KEYWORDS: BDATA: tplot variable for the magnetic field (needs to be same frame as velocity) VDATA: tplot variable for the velocity (needs to be same frame as mag field) TRANGE: time range to do minimum variance (will prompt to choose if not set) AUTHOR: J. Halekas $LastChangedBy: jhalekas $ $LastChangedDate: 2014-10-10 05:59:34 -0700 (Fri, 10 Oct 2014) $ $LastChangedRevision: 15970 $ $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/projects/maven/swia/mvn_swia_minvar_bv.pro $