SAC Help

A forum for SAC users to exchange ideas and ask questions about SAC usage, installation, portability, etc.

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Active Message Threads for November 2006

Geo .
2006-11-30 03:51:07 - 2006-11-30 23:32:25
Greetings, I have 3 questions today ! 1) I have the following piece of script that I use to mark t0 on the seismogram r 1 2 3 ppk --->(I mark t0 using the cursor) setbb t0 &1, t0 &2, t0 &3 r 1 2 3 ch t0 %t0 w over say I have 500 seismograms, how do I replace " setbb t0 &1, t0 &2, t0 &3 " so that I can mark t0 all together? 2) If I have again a bunch of seismograms that I need to seperate according to distance how do I do that? is there a script that I can use to do this? 3) How ca… [more]
Geo .
2006-11-23 08:31:15 - 2006-11-24 02:47:04
Greetings, I have a question regarding naming files. Assume that I have a sac file by the name 2006.300.33.SDMD.BHZ.R.SAC say, If I want to extract only the 2006.300.33.SDMD part for naming purposes after I do certain calculations on it, how do I do it? would something like this work? set bb name $1$.$STATION$ ? w %name.z It didn't so far for me? Would like to hear any suggestions from any one out there.... Thank you. Januka On 11/14/06, < sac-help-requ… [more]
Steve Sherburn
2006-11-17 21:19:59
(no body)
No replies
Mai Paul Martin
2006-11-17 01:23:52
Hi folks I am trying to install and run the latest release of SAC on linux boxes (32 bit), running either Suse 9 or 10, but it doesn' work. The error messages I get are vey similar to the posting by Steve below (from a few months ago) which has not been answered. Who has the solution? - sac installed in /opt/sac - environment variables set to export SACDIR='/opt/sac' export SACAUX='/opt/sac/aux' export SACGRAPHICS=xwindows export LD_LIBRARY_PATH="$LD_LIBRARY_PATH":/opt/matlab-6.5.1/e… [more]
No replies
2006-11-13 15:05:33 - 2006-11-14 21:44:57
Hi all i wanna use cut command for many files( 40~60 files) to cut S-wave(usually 3-5sec time window), for each file they have their own values for cut parameters(depend on S-wave). i have reviewed the sac manual for cut command. but, there is no such way to select the command cut values indepently for each file..? its time consuming doing this manaully...!! there is any systematic way for doing this by writing a macros command file..? of course i care about the r… [more]
Geo .
2006-11-12 03:15:48 - 2006-11-13 23:00:50
Hi, I am having trouble with running a small macro that I am trying to write. I have a bunch of sac files (Z, E, N) in a directory and I want to read event specific files (i.e. Z,N,E of a given event) together, do a calculation and give the out put. One I tried to use to read the files is r $1$..BHZ.R.SAC $2$..BHN.R.SAC $3$..BHE.R.SAC This wouldn't read the files and right now I am running out of options, Would anyone have a good solution for this? Further is there a way to preserve the ori… [more]
I am plotting XY data in a text (ascii) file usinig readtable (readtable content Y). The x-value is time (julian day). I want to plot nothing if there is no value (ie, a blank line) for a particular day, but it seems readtable will just skip this and scoot all the values down, so that a gap of 20 days does not show up in the plot. I've tried setting a dummy value of -99 (e.g.) instead of having a blank value. Is there any way to get SAC to skip a specified dummy value and plot nothing for i… [more]
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On 11/8/06, Fiona Darbyshire <> wrote: > > > I'm not sure whether "run sh" would work,but one can certainly run > executables and shell scripts from within a SAC macro. I think what you're > missing is the dollar sign in front of the commands. > Thanks, it works fine with the dollar signs. Maybe they should be added in the manual. On 11/8/06, Josh Calkins <> wrote: In the end, I used a shell script that created a macro > on the fly so I could … [more]
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Hi list, Following I am trying to execute a command from a SAC macro. Here is what I found in the manual: RUN program {message} {inputlines} ENDRUN So I am using this minimal example in a macro called test.m: RUN sh echo hey ENDRUN q And I get: SAC> m test.m sh: RUN: command not found I am using sac 100.01 for Linux. Any ideas? Thanks, Andreas
No replies
Jim Lawson
2006-11-08 01:15:51
I have a seismogram on which I have about used up the allowable number (50?) of plabels. I have not been able to format a plabel with one or more pieces of text and one or more variables. One such attempt was: plabel 48 "mediumfreq "$powerm" " " "$mulm" I have tried many combinations of " and ' including quoting the entire expression and/or the pieces inside. I have not had luck assembling a string within sac and putting it in a plabel. Can anyone kindly advise me how to have a single… [more]
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andreas wessel
2006-11-08 00:03:25
Hi, If you got the Program as a tgz file you need to unpack it: $ tar zxvf sac.tgz Then you can find Instructions in sac/Readme You don't really need to install it, just set the SACAUX variable and run it from the folder that came out of the tar. ciao, Andreas On 11/7/06, Hadi Ghofrani <> wrote: > Dear Sir > I appreciate it very much if you could advise how can I install sac2000 on > linux 9 (RedHat). > > Best regards > Hadi Ghofrani >
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Hadi Ghofrani
2006-11-07 05:54:55
Dear Sir I appreciate it very much if you could advise how can I install sac2000 on linux 9 (RedHat). Best regards Hadi Ghofrani
No replies
Anne Deschamps
2006-11-07 03:08:49
Hi, I have tried the function spectrogram (is there an other similar function sonogram?). SEISMIC ANALYSIS CODE [03/01/2005 (Version 100.00)] Copyright 1995 Regents of the University of California SAC> r APEBHZ.120.03.sac SAC> spectrogram Window size: 39 Overlap: 19 FFT size: 128 Warning: ORDER begin reset to 1/2 length of correlation window. ORDER = 19 Spectrogram dimensions are 512 by 3599 . X Error of failed request: BadMatch (invalid parameter attributes) Major opc… [more]
No replies
Fiona Darbyshire
2006-11-01 17:21:25 - 2006-11-02 20:11:06
I'm having trouble with a Fortran program that I inherited, that reads in information from a text file, makes some calculations, and writes the results into an existing SAC blackboard file. The program appears to compile okay (though I have to use the -m32 option in the makefile as I've recently moved to a 64-bit Linux platform). When I try to run it, however, it seems to be successful in reading the blackboard file, but crashes with a "Segmentation Fault" as soon as it gets to the first "setb… [more]
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