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 June 2019
Mitchell Liddell
2019-06-18 15:43:33
- 2019-06-19 09:51:55
Hello,
I have a problem with the CORRELATE function in sac.
I imagine the correlation function performing a marching dot product
between the two time series, and filling in zeros at the end/beginning as
necessary when the shift of the one time series exceeds the boundary of the
other. This is a "Cut, shift, correlate" order of operations and must
artificially lower the correlation coefficient at greater time shifts.
Is there any way for information outside of the original window to be
incl...
[more]
Replies
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Re: CORRELATE help - information outside of correlation window - George Helffrich - 2019-06-19 09:51:55
Corinne Lacave
Dear Madam, Sir,
We have installed successfully the sac library as explained in your mail
below.
Now we just face a problem when trying to compile a Fortran-77 program
using
the sac library.
Before, on our previous computer, we used to compile the program using
one of the
following compiling command :
fort77 -o program program.f -lsacio
f77 -o program program.f -lsacio
Now we receive an error message saying : /usr/bin/ld : cannot find -lsacio
Could you please help us with what should be...
[more]
Replies
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Re: SAC Software: Linux - Corinne Lacave - 2019-06-04 14:34:08
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Re: SAC Software: Linux - Corinne Lacave - 2019-06-04 15:39:50
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Re: SAC Software: Linux - Milton Plasencia - 2019-06-04 18:26:07
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Re: SAC Software: Linux - Corinne Lacave - 2019-06-13 15:22:01
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Re: SAC Software: Linux - Rob Casey - 2019-06-14 09:02:45
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Re: SAC Software: Linux - Corinne Lacave - 2019-06-18 13:07:16
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Abhash Kumar
Hi,
I want to calculate and plot envelope waveforms in SAC. I am reading
several waveforms recorded at multiple stations of a seismic network. I
decimated the data using decimate function and saved them as separate SAC
files. I read those decimated files and typed "envelope" in the SAC
terminal. According to the SAC manual, envelope command computes the
envelope function of the data in memory, but I don't understand how to save
the output of envelope command as separate SAC files to plot l...
[more]
Replies
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Re: Output envelope waveform in SAC - Milton Plasencia - 2019-06-14 22:36:36
jdlee6899@gmail.com
2019-06-03 08:58:26
- 2019-06-04 11:34:55
I am a beginner in seismic area.
I don't know well about seismic data format.
I want to save my waveform to css 3.0 format.
[ I have a very simple recorder which connected to seismic sensor ]
I am a beginner here in IRIS.
I am sorry that I don't know this forum is a proper place.
so I write my article here.
I choose CSS 3.0 instead of mseed format.
because someone want me to implent it .
so I am gathering data to implement it.
I want to know
where I get document for cs...
[more]
Replies
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Re: I have a question about css 3.0 implementation. - Rob Casey - 2019-06-04 11:34:55
