SUMMARY

Measures and marks the maximum peak to peak amplitude of each signal within the measurement time window.

SYNTAX

MARKPTP {LENGTH v},{TO marker}

INPUT

LENGTH v:	Change the length of the sliding window to v seconds.
TO marker:	Define the first time marker in the header to store results. The time of the minimum is stored in this marker. The time of the maximum is stored in the next marker.
marker:	T0|T1|T2|T3|T4|T5|T6|T7|T8|T9

DEFAULT VALUES

MARKPTP LENGTH 5.0 TO T0

DESCRIPTION

This command measures the times and the amplitude of the maximum peak-to-peak excursion of the data within the current measurement time window (see MTW.) The results are written into the header. The time of the minimum value (valley) is written into the requested marker. The time of the maximum value (peak) is written into the next marker. The peak-to-peak amplitude is written into USER0. The results are also written into the alphanumeric pick file if it is open (see OAFP.)

EXAMPLES

To set the measurement time window to be between the two header fields, T4 and T5, and the default sliding window length and marker:

SAC> MTW T4 T5
SAC> MARKPTP

To set the measurement time window to be the 30 seconds immediately after the first arrival, and the sliding window length to to 3 seconds, and the starting marker to T7:

SAC> MTW A 0 30
SAC> MARKP L 3. TO T7

HEADER CHANGES

Tn, USER0, KTn, KUSER0

SEE COMMANDS

MTW, OAPF

LATEST REVISION

May 15, 1987 (Version 10.2)