SUMMARY
Divides data in memory by a set of data files.
SYNTAX
DIVF {NEWHDR ON|OFF} filelist
INPUT
NEWHDR ON|OFF: By default, the resultant file will take its header field from the original file in memory. Turning NEWHDR ON, causes the header fields to be taken from the new file in the filelist. filelist: A list of SAC binary data files. This list may contain simple filenames, full or relative pathnames, and wildcard characters. See the READ command for a complete description.
DESCRIPTION
This command can be used to divide a set of files by a single file or by another set of files. An example of each case is presented below. The files must be evenly spaced and should have the same sampling interval and number of points. This last two restrictions can be eliminated using the BINOPERR command. If there are more data files in memory than in the filelist, then the last file in the filelist is used for the remainder of the data files in memory.
EXAMPLES
To divide three files by a single file:
SAC> READ FILE1 FILE2 FILE3 SAC> DIVF FILE4To divide two files by two other files:
SAC> READ FILE1 FILE2 SAC> DIVF FILE3 FILE4
HEADER CHANGES
If NEWHDR is OFF (the default) the headers in memory are unchanged). If NEWHDR is ON, the headers are replaced with the headers from the files in the filelist.
DEPMIN, DEPMAX, DEPMEN
ERROR MESSAGES
- 1301: No data files read in.
- 1803: No binary data files read in.
- 1307: Illegal operation on spectral file
- 1306: Illegal operation on unevenly spaced file
- 1801: Header field mismatch:
- either the sampling interval or the number of points are not equal.
- can be controlled using the BINOPERR command.
WARNING MESSAGES
- 1802: Time overlap:
- the file division is still performed.
LATEST REVISION
May 26, 1999 (Version 0.58)