SUMMARY

Sums the files in the stack file list.

SYNTAX

[S]UM[S]STACK  [[N]ORMALIZATION ON|OFF]

INPUT

NORMALIZATION ON | OFF:
	Turn normalization option on or off. When this option is on the resulting summation is normalized by dividing each point by a factor that is the sum of each file's weight.

DEFAULTS VALUES

SUMSTACK NORMALIZATION ON

DESCRIPTION

This command sums the files in the stack file list. A stack time window (see TIMEWINDOW) must have been defined before this command is executed. Each signal is shifted in accordance with its static and dynamic delays. Zeros are added to the sum for that part of each file that is not in the time window. Each file is given the requested weighting and files with reversed polarity are inverted.

A plot of the summation is automatically produced. The summation can be saved on disk using the WRITESTACK command.

ERRORS MESSAGES

• 5103: No time window defined.

SEE COMMANDS

TIMEWINDOW, WRITESTACK