rotate.help

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GSAC Command Reference Manual                                    ROTATE
SUMMARY:
Rotates horizontal components through and angle

ROTate [ TO GC | TO angle ]

INPUT:
     TO GC	Rotate to the great circle path. This requires that the
               BAZ and CMPAZ header variable be set. The KCMPNM headers
		are changed to replace the last character, usually N and E,
		to R and T. In addition the file name for default changes
     TO angle	Rotate to form the trace in the {angle} and {angle + 90}
		directions. this requires tha thte CMPAZ be set in the header
		The KCMPNM headers are changed as are the default write names.

DESCRIPTION: 
		In both uses of the command, the filename and KCMPNM are 
		converted to upper case. Note that a write will be in the 
		current directory rather in the directory of the original
		traces
		As an added feature, ROTATE is smart enough to handle traces
		that do not have equal lengths or absolute start time. The 
		will consist of the overlapped trace window. This means that
		it should be possible to ROTATE without having to SYNCHRONIZE
		and CUT
The following dialog illustrates the naming, Recall that the
LISTHEADER gives the filename for the default write.
    GSAC> ../020618/BLOLHE.sac ../020618/BLOLHN.sac
    GSAC> lh
    ../020618/BLOLHE.sac (0):
            KSTNM             BLO            KCMPNM             lhe
    ../020618/BLOLHN.sac (1):
            KSTNM             BLO            KCMPNM             lhn
    GSAC> rot to gc
    Rotating to great circle to form R and T
    GSAC> lh
    BLOLHR (0):
            KSTNM             BLO            KCMPNM             LHR
    BLOLHT (1):
            KSTNM             BLO            KCMPNM             LHT
    GSAC> r
    ../020618/BLOLHE.sac ../020618/BLOLHN.sac
    GSAC> rot to 90
    Rotating to angle 90.000000 to form 090 and 180
    GSAC> lh
    BLOLH090 (0):
            KSTNM             BLO            KCMPNM             LH090
    BLOLH180 (1):
            KSTNM             BLO            KCMPNM             LH180
    GSAC>

SEE ALSO: