SUMMARY

Opens a HYPO formatted pick file.

SYNTAX

OHPF {file}

INPUT

file:	Name of file to open. If a file by that name already exists, it is opened and new picks are added at the bottom.

DEFAULT VALUES

OHPF HPF

DESCRIPTION

The HYPO pick file generated by SAC can be used as input to HYPO71 and similiar event location programs. Picks from the automatic picker (APK) and manual pick plot (PLOTPK) commands are written into this file once open. This file can be closed using the CHPF command. Opening of a new HYPO pick file automatically closes the previously open one. Opening an existing HYPO pick file automatically deletes the last line of the file, which should be the instruction card "10" that indicates the end of the HYPO input file. Terminating SAC also automatically closes any open pick files. Event delimiters can be written into a HYPO pick file with the WHPF command. See the reference for details on the format of each card.

ERROR MESSAGES

• 1901: Can't open HYPO pick file
  • Probably an illegal character in filename.
  • Occasionally a system error. If error persists contact the programmer.

SEE COMMANDS

APK, PLOTPK, WHPF, CHPF

REFERENCES

W.H.K. Lee and J.C. Lahr; HYPO71 (Revised): A Computer Program for Determining Hypocenter, Magnitude, and First Motion Pattern of Local Earthquakes; U. S. Geological Survey report 75-311.

LATEST REVISION

March 20, 1992 (Version 10.6e)