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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Active Message Threads for November 2008
Elisa Buforn
hello
i am a cpd technician from Universisdad complutense de Madrid we are tring to install sac in a 64 bit equipment with mandriva 2007. The problem we have is due libncurses5 we have the 64 bits version of this library which obviously sac does not find, but when we put a native 32 bits libncurses library in /lib sac displays a Floating Point problems. Is there any fix for this problen ? do you know any way of running sac-101 in 64 bits platforms?. We can run without problems sac 57 in the sa…
[more]
Replies
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Re: help sac -101 - Brian Savage - 2008-11-30 22:06:46
zsf
Hi,
I looked for you on Reunion.com, but you weren't there. Please connect with me so we can keep in touch.
-Sufang
Do You Know Sufang?
YES - Connect with Sufang, and see who's searching for you
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N…
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No replies
Hi,
I looked for you on Reunion.com, but you weren't there. Please connect with me so we can keep in touch.
-Sufang
Do You Know Sufang?
YES - Connect with Sufang, and see who's searching for you
http://smtp26.mail.reunion.com:80/track?type=click&mailingid=13400&messageid=6100&databaseid=1227215668&serial=1207176509&emailid=sac-help@iris.washington.edu&userid=340271&extra=&&&2002&&&http://www.reunion.com/showInviteRegistration.do?uid=304090852&invitee=sac-help@iris.washington.edu
N…
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No replies
Hi,
I looked for you on Reunion.com, but you weren't there. Please connect with me so we can keep in touch.
-Sufang
Do You Know Sufang?
YES - Connect with Sufang, and see who's searching for you
http://smtp26.mail.reunion.com:80/track?type=click&mailingid=13400&messageid=6100&databaseid=1227215668&serial=1207176509&emailid=sac-help@iris.washington.edu&userid=340278&extra=&&&2002&&&http://www.reunion.com/showInviteRegistration.do?uid=304090852&invitee=sac-help@iris.washington.edu
N…
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No replies
ying
I am using a macbook (intel cpu; tiger) and 'ssh' to my linux machine at
school.
I started up SAC2000 (v.101-1) and used 'plot' command on the Linux
machine.
It seems that the cross-hair (i.e., the mouse cursor) becomes 'yellow' which
is very difficult
to see. Anyone met the same problem and any solution? Thank you.
yingcai zheng
ucsc
No replies
LeRoy Dorman
There is another subprogram, called readsac.m, with comments
in french, which reads sac files and reads little-endian and
big-endian files transparently.
lmd
> From: Brian Savage <savage@uri.edu>
> Date: Tue, 25 Nov 2008 10:16:23 -0500
> To: m tuji <mp.tuji@gmail.com>
> Cc: sac-help@iris.washington.edu
> Subject: Re: [SAC-HELP] help on rsac.m
> X-BeenThere: sac-help@iris.washington.edu
> X-Mailman-Version: 2.1.11rc1
> List-Id: "a forum for SAC users to exchange ideas and ask questions about SA…
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No replies
Dugda
Hi All,
The Matlab script rsac.m reads my sac data in Matlab environment, but
mostly the values of the variables
are not correct, they are not even close. An example is given below.
If you have any similar experience or suggestion, please give me your
advice.
Thank you.
Dugda
Example:
>> rsac('2008.211.18.40.15.1695.II.PFO.00.BHN.R.SAC')
ans =
dt: -428443552
beg: 4.5189e+28
e: 2.7179e+23
o: 2.0258e-05
a: 2.0962e-38
picks: [10x1 double]
stla: 6.7842e+16
stlo: 2.7884e-05
stel: 5.7…
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Replies
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Re: help on rsac.m - Brian Savage - 2008-11-25 18:16:23
Ayele
Dear Sir,
I converted sac ASCII format data (from DIMAS2003) to sac binary and I tried to read and change the origin time header as follows:
ch o GMT YYY DDD(Julian) HH MM SS SSS(MS)
then when I run lh (LIST HEADER), I got the following for the OMARKER
OMARKER=xxx.xx (-12345)
This -12345 also appears on the plot instead of the reference time o. I am really having problem, any help please.
With Regards,
Ayele
Replies
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Re: OMAKER - Mei Xue - 2008-11-23 22:40:54
Lahcen
Hello every body;
Please how to install sac under Linux.
thank you for your help
No replies
Igor Stubailo
Dear SAC users,
I am trying to install and run the latest v.101.2 on SuSE 9.3 (32-bit)x86
and getting the "Floating point exception" while trying to run the sac
binary.
I didn't modify anything, simply copied the untarred files/dirs to
/usr/local/sac and setup the environment variables.
The OS:
Linux kernel 2.6.11.4-21.7-bigsmp #1 SMP Thu Jun 2 14:23:14 UTC 2005 i686
i686 i386 GNU/Linux
The env. vars:
export SACHOME=/usr/local/sac
export PATH=${PATH}:${SACHOME}/bin
export SACAUX=${SACHOM…
[more]
No replies
Maria Ramirez
Dear SAC users,
we are currently using the SAC2000 software in order to plot different
seismograms inside one single figure by using the epicentral distances
(degrees) along the y-axis. For this, we made use of both "addstack" and
"changestack" commands inside the sss environment. We found that our
seismograms are being plotted with a changed polarity and also with a
different amplitudes. Does anyone knows how to plot them inside the same
plot by keeping the same polarity and using a sort of "…
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No replies
Juan Payero
Hello Sac_Users:
I have some files 20050812.ACAH.HHN 20050812.ACAH.HHE
20050812.ACAH.HHZ, 20050812.BUCU.HHN 20050812.BUCU.HHE 20050812.BUCU.HHZ
etc.
and I prepared this macro "leer" for read:
qdp off
r $date$.$esta$.???
p1
pause
rmean
.
.
etc
when I'm running in SAC it read
date? 20050812 and
esta? ACAH
inmediatly the program return: error .... no data files read in.
Segmentation fault.
Other return: ERROR 1201: Could not find VARS variable blackboard ESTA
in others examples.
TH…
[more]
No replies
Antonio
Dear all
I'd like to know if is possible with sac to use the cross
correlation function for two seismic signals.
Best regards
Antonio Brigante (Ph.D. Student, University Federico II of Naples,
Dipartimento di Ingegneria Geotecnica Idraulica ed Ambientale)
Replies
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Re: Cross Correlation Function - Olga-Joan Ktenidou - 2008-11-11 19:53:18
Ashley Shuler
Dear all,
I have two files, A and AA. File AA is simply the absolute value of
A. I want to divide A by AA to get a one-bit signal (1 or -1). I get
this error message:
SAC> r a
SAC> divf aa
WARNING: Data value outside system storage bounds
Maxvalue = 3.4028e+38 Minvalue = -1
Any idea what the problem is?
Best, Ashley
No replies
To all sac users
I'm a Ph.D. student of the University of Naples Federico II. I'm
analysing some seismic records in order to obtain the seismic response
of an earth structure. I was able to filter the signals and to obtain
the Fourier spectrum of the signal but I'm non able to obtain the
amplification factor comparing two different fourier spectra. Is
possible, with the sac, to compare two spectra and two obtain the
amplification factor?. Moreover is possible with sac to ob…
[more]
No replies
weitao
Dear All
Is there any sac command to find the value of tn marker ? I mean if
t1=100. can I find out the Y-value at that time?
thanks all.
weitao
Replies
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Re: how to find the value of tn marker ? - Pablo Palacios - 2009-01-12 17:23:24
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Re: how to find the value of tn marker ? - George Helffrich - 2009-01-13 00:15:57
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