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 May 2009
Arthur Snoke
I prepared a FAPFILE in the format listed in the transfer help file, and
it is as if the amplitude were 1 and phase 0 for all frequencies.
Has anyone succeeded in getting it to work?
What I was trying to do was running EVALRESP externally from SAC, which
produces separate AMP. and PHASE. files for each channel. I wrote a
program to convert them into a FAPFILE, but ...
Replies
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Re: Does transfer FROM FAPFILE work? - Peter Goldstein - 2009-05-26 04:27:47
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Re: Does transfer FROM FAPFILE work? - Arthur Snoke - 2009-05-26 13:42:03
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Re: Does transfer FROM FAPFILE work? - Peter Goldstein - 2009-05-26 16:36:41
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reza
Hi every one
As you know sac changes its scale when we use fft command in it and we
should correct it with div command. (Divide into dt)
I want to use transfer to and transfer from. (Convolution and
deconvolution) I want to know does sac change its scale or not here.
Where changing scale is necessary and I have to pay attention it?
I would be please if you help me.
Thank you,
Reza
Iranian seismological center
No replies
Carl Tape
17-May-2009
Dear SAC Help:
I am having trouble using SAC libraries for a particular Fortran code. The
problem may be related to 64-bit vs 32-bit processing. Here are the details of
my situation.
uname -a
Linux denali #42-Ubuntu SMP Fri Apr 17 01:58:03 UTC 2009 x86_64 GNU/Linux
Computer Dell Inspiron 530
Platform Ubuntu 9.0.4
sac
SEISMIC ANALYSIS CODE [09/04/2008 (Version 101.2)]
gfortran --version
GNU Fortran (Ubuntu 4.3.3-5ubuntu4) 4.3.3
gcc --version
gcc (Ubuntu 4.3.3-5ubuntu4) 4.3.3…
[more]
Replies
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Re: SAC on 64-bit Linux - Chad Trabant - 2009-05-17 21:02:22
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Re: SAC on 64-bit Linux - Brian Savage - 2009-05-18 00:51:12
Bob Myhill
Dear all,
I've been trying for some time to plot bbfk data retrieved from SAC (the
09/04/2008 version) in .a format, but do not understand the structure of the
data output.
The SAC manual informs me that the data is output in 'square mode', but I
don't know how this relates to the azimuth and wavenumber, and how
consecutive data points are chosen. I've tried both a simple azimuthal and
wavenumber progression (rotating around the z-axis or radiating from it) but
neither of these seem to recre…
[more]
Replies
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Re: BBFK alphanumeric output from SAC - George Helffrich - 2009-05-14 17:13:10
Andreas Wuestefeld
Dear Masumi
I just tried to reconstruct the error you are describing. However, I
don't run into any troubles. Which version of SAC and CYGWIN are you using?
I am installing SAC-101.2 and on both CYGWIN-1.5.25-15 and the new
CYGWIN-1.7beta this installs fine (provided all necesary CYGWIN packages
are installed):
http://seis.bris.ac.uk/~glxaw/Cygwin4seismology.htm
Please let me know whether that helped, and also what other packages you
have installed which might cause interferences.
Regar…
[more]
