PRO get_sd_glondir :Description: Generate a tplot variable containing angles between the beam direction and local geographical longitude direction for each pixel. :Params: vlos_vn: Name of tplot variable for LOSV data. :Keywords: :Examples: get_sd_glondir, 'sd_hok_vlos_1' :History: 2014/01/06: Initial release :Author: Tomo Hori (E-mail: horit at stelab.nagoya-u.ac.jp) $LastChangedBy: jwl $ $LastChangedDate: 2014-02-10 16:54:11 -0800 (Mon, 10 Feb 2014) $ $LastChangedRevision: 14265 $ $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/projects/erg/ground/radar/superdarn/get_sd_glondir.pro $