vir - impulse response viewing utility. vir( h, tf, tflog, az, el, lr, ls, rs, nrm, of, win, scale ) h - sarc struct tf - view transfer functions flag (default = 0) tflog - log frequency flag (default = 1) az - azimuth (degrees) (see below) el - elevation (degrees) (see below) lr - 0 = left, 1 = right, 2 = both (default = 2) ls - left line style (default = 'b') rs - right line style (default = 'r') nrm - normalize data flag (default = 1) of - data offset (default = 1) win - data window (default = length of IR - of + 1) scale - IR scale factor (default = 1) If az and el are not specified, vir iterates through all database locations. If az specified and el == [], vir iterates through all el's at az. If az specified and el not specified, vir displays the AZ,EL at the grid location passed in az. When iterating, hitting a key advances to the next location.