SAC Help

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

This list has moved to https://groups.google.com/a/earthscope.org/g/sac-community.
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sac-help@lists.ds.iris.edu
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Help

Help lists are for submitting support questions. Anyone can post a question for SAGE (or another team) to answer.

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Active Message Threads for May 2014

John
Mseed2sac
2014-05-31 00:35:42
Hi dear friends, I can't install "mseed2sac" in windows 8, I downloaded from IRIS but I think I'm doing sth wrong, it does not recognize any command. I will appreciate any help. Regards.John C.
Replies
reza
Resp P&Z question
2014-05-29 03:29:47
(no body)
No replies
Cuiyan Kong
Re: How to solve the problem of 'X11 Screen does not exist'
2014-05-28 04:04:13 - 2014-05-29 01:13:48
Yes, I installed ' Xming ', now the problem is solved. Thanks for your reply and your help. Regards, Cuiyan On Tuesday, May 27, 2014, <shenxzh@gmail.com> wrote: > This problem is not from SAC. You need to set up Xserver in you computer > and get the remote computer terminal. > > ------------------------------ > Xuzhang Shen > Lanzhou Insitute of Seismology, China Earthquake Administration > 450# Donggan west road, Lanzhou, 730000, China > Office:+86-09318277661 > Email:shenxzh@gmail.com<java… [more]
Replies
Cuiyan Kong
How to solve the problem of ' X11 Screen does not exist'
2014-05-27 23:31:12 - 2014-05-28 16:00:35
Hi, I am learning SAC, when I input 'plot', the sentence of ' X11 Screen does not exist' shows up and SAC will quit automatically. May I know how to solve the problem? I am using the remote window connecting to the Linux system, does it matter the ' plot' command and X11 screen? I appreciate your help. Thanks Tracy
Replies
reza
SAC origin time header change
2014-05-26 19:37:18
(no body)
Replies
Kian Rady
Filling SAC headers
2014-05-24 19:04:52 - 2014-05-25 04:47:16
Hello Sac users I am a sac beginner. I have a sac seismogram. The header of file is: ………. NPTS = 1326 B = 3.735695e+02 E = 1.698569e+03 IFTYPE = TIME SERIES FILE LEVEN = TRUE DELTA = 1.000000e+00 IDEP = UNKNOWN DEPMIN = -1.549182e-03 DEPMAX = 1.978065e-02 DEPMEN = 1.464839e-05 OMARKER = 0 AMARKER = 509.66 T0MARKER = 920.7 T1MARKER = 920.7 KZDATE = APR 16 (106), 2013 … [more]
Replies
lcazares
sac
2014-05-21 01:48:36 - 2014-05-21 02:18:48
hello, somebody can help me, the problem us that i dont use the sac very well, and i need to use the FFT to a station and psp am....but i dont know how i make it. thanks....sorry for my english
Replies
  • Re: sac - Milton Plasencia - 2014-05-21 02:18:48
Guust Nolet
variable not recognized?
2014-05-21 00:20:11 - 2014-05-21 00:23:00
We have a script that refuses to work in version 101.6, though before that it worked fine. The script computes the decimation factor in order to decimate from delta 0.025 to 0.1s; here is its echo to the screen: setbb new 0.1 r AU.WR0..BHZ rmean evaluate to old &AU.WR0..BHZ,delta ==> evaluate to old 0.025 evaluate to factor %new / %old ==> evaluate to factor 4 decimate %factor ==> decimate 4 ERROR interpreting command: decimate %factor ILLEGAL OPTION: ^ It does not … [more]
Replies
Helene Kraft
Reverse amplitudes
2014-05-20 21:57:06 - 2014-05-20 23:04:31
Hey, Is there a function in SAC to reverse the amplitudes, basically just change + and -? Thanks!
Replies
Milton Plasencia
Re: Dear Sir
2014-05-16 21:37:03
Nasir, I see your Sac files the HHN file is corrupt, but it is not important. To pass from 100 sps to 20 sps, you must to use the decimate command, > r ISBA_PK_HHE > decimate 5 > w ISBA_PK_HHE_20 Give a look in decimate command help, factor 5 means divide 100sps/5=20 sps HTH, Milton P. Plasencia Linares mpplasencia@gmail.com On May 16, 2014, at 9:00 AM, nasir mahmood <earthq5@yahoo.com> wrote: > Dear Sir > hopefully you will be fine and good. I have small question about the SAC, if yo… [more]
Replies
Sheila Peacock
Re: decimation of SAC files
2014-05-16 16:23:31
Dear Nasir Mahmood, Thanks for your email. I am copying my reply to the sac-help email list so that others might see the question and reply. Do you belong to the sac-help list? If not, then you can join it by visiting www.iris.edu and looking under "Data and Software", then under the sub-menu "Support", then "list of all mailing lists", then click on "sac-help" and follow the instructions. You asked: On 05/16/2014 07:39 AM, nasir mahmood wrote: > Dear Professor > hopefully you will be fine… [more]
No replies
reza
time tag question
2014-05-15 20:23:09
Hello I need to divide each sample to the respective lapse time. For instance I need to evaluate log10(A/T). For example : mtw t0 -2 30 div time log10 but the problem is that I could not find "time" variable or blackboard which refers to each sample time. Thank you, Reza
Replies
Nasir Mahmood
SAC header information
2014-05-07 11:10:36 - 2014-05-10 03:28:36
Dear SAC users I installed iasp routine ttimes. Then I checked in terminal and got message like: [sys@localhost ~]$ ttimes  This routine for calculating travel times for specific distances uses a set of precalculated  tau-p tables for the iasp91 model. open: No such file or directory apparent state: unit 1 named /usr/local/sac/iaspei/iasp91.hed last format: list io lately writing direct formatted external IO Aborted (core dumped) I want to know is this some error from above message and want… [more]
Replies
Geo .
Re: SAC in a shell script issue -SOLVED
2014-05-08 22:41:39
Thanks all, the issue is solved with WRITEHDR instead of WRITE HEADER, a syntax error on my part. J. On 8 May 2014 11:44, Januka Attanayake <jattanayake@gmail.com> wrote: > Hello, > I have the following short piece of SAC code embedded in a shell script, > in which I use variables declared in the shell script to write SAC > parameters (e.g. sac file name, latitude, longitude). The issue is that, > while the script runs as expected, the header variables don't get written. > I also made an at… [more]
No replies
Geo .
SAC in a shell script issue
2014-05-08 18:44:58
Hello, I have the following short piece of SAC code embedded in a shell script, in which I use variables declared in the shell script to write SAC parameters (e.g. sac file name, latitude, longitude). The issue is that, while the script runs as expected, the header variables don't get written. I also made an attempt of running this part as a macro by echo'ing these lines and generating a macro but the result was exactly the same. Can I not use shell variables with CHNHDR function? I am using SA… [more]
No replies
Arnaud Pladys
Problem with sac on OS X 10.9.3 beta 13D61
2014-05-08 17:39:05 - 2014-05-08 17:52:51
I’m trying to install SAC on my mac. I put all the file from the archive in /Users/arnaudpladys/Library/sac Therefor I edited my touche profile with this line: # SAC (seismic) export PATH=${PATH}:/Users/arnaudpladys/Library/sac/bin export SACAUX=$/Users/arnaudpladys/Library/sac/aux But when I’m running $ sac I get this: Hyperion:sac arnaudpladys$ sac ERROR 108: Number 108 $/Users/arnaudpladys/Library/sac/aux/messages $/Users/arnaudpladys/Library/sac/aux/csspickpref . readcss will… [more]
Replies
Januka Attanayake
SAC in a shell script issue
2014-05-08 10:20:35
Hello,  I have the following short piece of SAC code embedded in a shell script, in which I use variables declared in the shell script to write SAC parameters (e.g. sac file name, latitude, longitude). The issue is that, while the script runs as expected, the header variables don't get written. I also made an attempt of running this part as a macro by echo'ing these lines and generating a macro but the result was exactly the same. Can I not use shell variables with CHNHDR function? I am using S… [more]
No replies
Baumgardt.Doug
SAC Read SEGY
2014-05-06 17:27:27 - 2014-05-06 19:31:02
I have downloaded data in PASSCAL SEGY format, one file per channel. However, when I try to read in one of the files with the command 'read SEGY {filename}, , I receive an error message "ERROR 1340: data points outside allowed range contained in file {file name}". What does this mean and how do I read this data in? Douglas R. Baumgardt ________________________________ The information contained in this email message is intended only for the use of the individual(s) to whom it is addressed an… [more]
Replies
John
Convert from passcal to sac
2014-05-05 23:47:49 - 2014-05-06 14:09:15
Hi friends, I have data ie. "20051001_020132.SGR.passcal" how can I convert it to .SAC?
Replies
masoumeh
Reading CSS files
2014-04-29 12:58:18 - 2014-05-06 01:48:37
(no body)
Replies
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