SAC Help

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 November 2008

Elisa Buforn
2008-11-27 19:59:19 - 2008-11-30 22:06:46
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 ... [more]
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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=340275&extra=&&&2002&&&http://www.reunion.com/showInviteRegistration.do?uid=304090852&invitee=sac-help@iris.washington.edu ... [more]
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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 ... [more]
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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 ... [more]
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ying
2008-11-29 03:07:08
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
2008-11-25 19:17:20
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 ... [more]
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Dugda
2008-11-25 02:37:27 - 2008-11-25 18:16:23
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... [more]
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Ayele
2008-11-22 11:50:42 - 2008-11-23 22:40:54
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
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Lahcen
2008-11-20 19:20:05
Hello every body; Please how to install sac under Linux. thank you for your help
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Igor Stubailo
2008-11-14 23:21:55
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=${SACH... [more]
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Maria Ramirez
2008-11-14 02:16:48
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... [more]
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Juan Payero
2008-11-12 21:58:51
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. ... [more]
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Antonio
2008-11-12 00:36:14
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)
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Ashley Shuler
2008-11-08 05:22:07
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
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Antonio
2008-11-06 21:06:40
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 ... [more]
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weitao
2008-11-06 18:37:05
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
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