Greetings:
Is it possible to convert an ascii file into a SAC file? if not how would
you read a simple ascii file in SAC?
Thanks !
Januka
Is it possible to convert an ascii file into a SAC file? if not how would
you read a simple ascii file in SAC?
Thanks !
Januka
-
I just asked the opposite question last week. :)
Below is the old way to do it using the convert command. I believe you
can also do it using the r/write commands. Something like
sac
r <ascii filename>
write over sac
You may want to make a copy of your ascii file since the r/write will
write over the file you input.
HTH,
Megan
CONVERT
SUMMARY:
Converts data files from one format to another.
SYNTAX:
CONVERT {FROM} {format} infile
{TO {format} outfile}|{OVER {format}}
where format is one of the following:
SAC|ALPHA
INPUT:
infile : The name of the input data file.
outfile : The name of the output data file.
OVER : Overwrite the input data file.
SAC : SAC formatted binary data file.
ALPHA : Alphanumeric equivalent of SAC binary data file.
DEFAULT VALUES:
CONVERT FROM SAC infile OVER SAC
DESCRIPTION:
This command converts a single data file from one format to another. It
will
be replaced in a future update with an improved system that will use the
READ
and WRITE commands.
________________________________
From: sac-help-bounces<at>iris.washington.edu
[sac-help-bounces<at>iris.washington.edu] On Behalf Of Januka
Attanayake
Sent: Monday, May 21, 2007 10:49 AM
To: sac-help<at>iris.washington.edu
Subject: [SAC-HELP] ascii to sac
Greetings:
Is it possible to convert an ascii file into a SAC file? if not how
would you read a simple ascii file in SAC?
Thanks !
Januka
-
Some on this list may have written programs for preparing data in "alpha"
or ascii format. To understand about sac file formats, I suggest you
spend time with the sac users manual at
http://www.iris.edu/manuals/sac/manual.html. Instructions like the
following may be helpful:
Sample Alphanumeric Data File
The header section and first five lines of the data section of a sample
SAC alphanumeric data file is shown below. You can reproduce this file
(with the entire data section) on your system by executing the following
commands:
u: FUNCGEN SEISMOGRAM
u: WRITE ALPHA TEMP1
You can then convert this alphanumeric file to a binary one and read it
into SAC with the following commands:
u: CONVERT FROM ALPHA TEMP1 TO SAC TEMP2
u: READ TEMP2
(cut and paste from the manual)
On Mon, 21 May 2007, Januka Attanayake wrote:
Greetings:
Is it possible to convert an ascii file into a SAC file? if not how would
you read a simple ascii file in SAC?
Thanks !
Januka