SAC Command Reference Manual: SPE

WRITESPE

SUMMARY

Writes a SAC file containing the spectral estimate.

SYNTAX

[W]RITE[SPE] {file}

INPUT

file:The name of the SAC file to write.

DEFAULT VALUES

WRITESPE SPE_

DESCRIPTION

The spectral estimate file contains the spectral estimate from zero up to the folding frequency. The spectral estimate is calculated with an FFT. The number of points in this file is half the length of the FFT used plus one.

This format was chosen so that multiple spectra computed with SPE could be compared using the P2 plotting function, without any need to cut the files prior to plotting.

ERROR MESSAGES

  • 5004: No spectral estimate calculated.