PROCEDURE: MVN_STA_ETSPEC_DIR PURPOSE: Makes directional Energy-time spectrograms in the specified frame from STATIC data. 6 tplot variables will be generated: +X, -X, +Y, -Y, +Z, and -Z. CALLING SEQUENCE: mvn_sta_etspec_dir INPUTS: APID: Not necessary, but you can explicitly specify STATIC APID to use. Default is 'd0'. (Note that STATIC data and SPICE kernels need to be loaded beforehand). KEYWORDS: (all keywords are optional.) FRAME: Specifies the frame (Def: 'MSO'). UNITS: Specifies the units ('eflux', 'counts', etc.). (Def: 'eflux') ARCHIVE: Uses archive data instead of survey. THLD_THETA: theta_v > thld_theta => +Z, theta_v < -thld_theta => -Z (Def: 45). ATTVEC: Generates tplot variables showing STATIC XYZ vectors in the specified frame. TRANGE: Time range to compute directional spectra (Def: all). MASS: Specifies mass per charge ranges which you want to use. Default is optimized to be O+ (atomic oxygen ions). CREATED BY: Takuya Hara on 2014-11-25. $LastChangedBy: hara $ $LastChangedDate: 2014-12-09 17:51:20 -0800 (Tue, 09 Dec 2014) $ $LastChangedRevision: 16430 $ $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/projects/maven/sta/mvn_sta_programs/mvn_sta_etspec_dir.pro $ MODIFICATION LOG: (YYYY-MM-DD) 2014-11-25: Initial procedure is prepared. This routine originally developed by Yuki Harada for the SWIA data on 2014-11-20. Based on his routine, this routine is made.