A forum for SAC users to exchange ideas and ask questions about SAC usage, installation, portability, etc.
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Help
Help lists are for submitting support questions. Anyone can post a question for IRIS (or another team) to answer.
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- SAC Software SAC
Active Message Threads for April 2017
Prateek Mondal
I have two shell script. One for pick up information and other one is for update those information to sac header. I am facing problem when 1.sh passes the arguments to the shell script 2.sh for updating sac header. Please help. Thanks in advance
Below one is 1.sh which finds the information from a list of events
#!/bin/bash
while IFS=' ' read -r ev[$i] || [[ -n "${ev[$i]}" ]]; do # Reads event list
echo ${ev[$i]} | cut -c1-12 # shows events in …
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No replies
Igor
Hello,
I have a simple script that does the number rounding:
SAC> sc rround.bsh &1,depmen&
0.52
Unfortunately in my ver 101.6a the "sc to" feature to get the shell output
into a bb variable is not implemented:
SAC> sc rround.bsh &1,depmen&
0.52
SAC>
SAC> sc to var rround.bsh &1,depmen&
sh: to: command not found
I would like to use the rounding result (0.52) inside the SAC.
How do I capture the sc output into a bb variable in my case?
If I have a different number saved in a local file, ho…
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No replies
> Hello,
> By a default, a SAC plot displays the station name and channel (along with the date and time).
> Is there a way to also display the 2-letter station network name on a plot?
> Thanks,
> Igor
Replies
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Re: How to display the network name in sac? - George Helffrich - 2017-04-20 16:32:24
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Re: How to display the network name in sac? - Igor - 2017-04-20 23:22:48
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Hello,
Does anyone know how can I get both real and imaginary part of a sac file? And its complex conjugate?
Best regards, Maria.
Replies
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Re: Extract real and imaginary part - Satish_iitb - 2017-04-19 22:57:43
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Re: Extract real and imaginary part - Maria Luíza Cardoso - 2017-04-20 20:27:17
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Athanasopoulos George
Dear Sir,
Thank you for approving our request for SAC program. We have already
dowloaded and unzipped the program in our PC (core i7-2600 CPU @
3.40GHz, RAM 16GB, 64-bit). Our PC's operational system is Windows 7.
We have read the instructions accompanying the software; we are
encountering, however, difficulties, in installing and running the
program in the Windows 7 environment. Could you please help us in this
regard?
Regards,
G.A. Athanasopoulos
-------------------------------
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Replies
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Re: SAC installation for Windows 7 - Milton Plasencia - 2017-04-20 17:43:19
REHMAN .
Hi,
I have downloaded the waveform and Response poles and
zeros in SAC format from JWEED. I removed the instrument response using
command " transfer from polezero subtype ./resp.pz to vel freqlimits 0.001
0.002 10 20" in SAC. Initially in sac header I have IDEP= unknown and after
removing response it changed to IDEP= VELOCITY (NM/SEC).
I have instrument properties in resp.pz file INPUT UNIT :
M, OUTPUT UNIT: COUNTS, INSTGAIN : 1.500000e+03 (M/S),SENSITIVITY :
…
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Re: Instrument Response - Milton Plasencia - 2017-04-19 13:54:18
Raquel Bonilla Alba
Hello,
I have a problem when I try to install sac.
Replies
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Re: help sac - Milton Plasencia - 2017-04-18 06:09:06
Maria Luíza Cardoso
2017-04-16 13:36:38
- 2017-04-16 21:11:11
Hi everyone,
How can I perform deconvolution in the frequency domain by dividing the spectra of the numerator by the spectra of the denominator?
Best regards, Maria.
Replies
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Re: Performs deconvolution in the frequency domain - Cliff Thurber - 2017-04-16 21:11:11
Hello everyone,
Is there a way to save my sac file in frequency domain, not in time domain?
Best regards, Maria.
Replies
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Re: Save files in frequency domain - Satish_iitb - 2017-04-12 16:36:08
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Re: Save files in frequency domain - Maria Luíza Cardoso - 2017-04-16 12:59:54
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LAURA MORON CONDE
Hello, I´m Laura, a student of physics at Universidad Complutense de
Madrid, and I need help with the software sac, the program does not
initialize (see the picture) , and I can´t work with it. In this picture
you can see "20.79 over 3 days" and I don´t know what does this means, I
have decompressed the file and installed by the way you told me and I can´t
do anything, I don´t know what is the problem.
I used linux (ubuntu) 64 bits
Thank you, Laura
Replies
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Re: Software SAC - Maria Silveira - 2017-04-12 22:16:15
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Re: Software SAC - Vladimir Karpinsky - 2017-04-13 01:05:28
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Re: Software SAC - rob@iris.washington.edu - 2017-04-12 15:15:18
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Re: Software SAC - LAURA MORON CONDE - 2017-04-13 05:09:48
宋超
Hello all,
When I use the transfer command of SAC, I am confused which data type did I get finally. For example, for broadband seismometers we used more often now, the recorded data type is usually the velocity, if I have the instrument response file PZs, I could type: trans from polezero subtype $pzfile to none freq 0 0.001 8 10. Here is the question: while my data is velocity, after 'TO NONE', the output data is displacement? Or just remain the type as original data, velocity. In other word…
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Replies
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Re: Problems on using SAC command---transfer - Milton Plasencia - 2017-04-04 23:20:17
Shutian
Hello, I need the following sac ascii format. At the moment I forget how to convert this format from the SAC binary format. If you know the procedure, tell me.
Thanks in advance.Shutian
-------------------------------------------------------------------------
STA=YAK LAT= 0.00 LON= 0.00 ELEV= 0.0(M)
COMP=LHZ RATE=0.1
TIME=2012,302,03:04:08.000
The complex transfer functions T are calculated by:
T(S)=DS*A0*(S-Z01)*(S-Z02)*...*(S-Zm)/((S-P01)*(S-P02)...(S-Pn))
where:S=i*Omega, Ome…
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