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 August 2006

Heloise.Cadet@ujf-grenoble.fr
2006-08-25 14:01:23 - 2006-08-25 18:32:20
>>Hello >> >>I'd like to pick several data using this kind of macro: >> >>bd x >>qdp off >> >>do event wild *0 >> setbb fileV ( conc $event '.NS1.sac') >> setbb fileN ( conc $event '.EW1.sac') >> setbb fileE ( conc $event '.UD1.sac') >> r %fileV %fileN %fileE >> p1 >> oapf name APF1 >> ppk m on >>enddo >>quit >> >> >>my data are that kind: name.00.NS1.sac for example >>but I have too many events so the macro does'nt work, the "plot window" >>goes open and close as soon as it is open! ... [more]
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Wenzheng Yang
2006-08-25 05:39:43
I am trying to use "ppk p 3 m on" to repick seismic phase under linux x64 environment. But after I typing "writehdr", the saved waveforms totally deformed. It is a bug? There is no problem if I do the same thing under sun-unix or linux x32. Wenzheng Yang Geophysical graduate student @ University of Southern California
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Georgia Cua
2006-08-18 23:44:43 - 2006-08-21 01:50:47
Dear sac-help, I am using an intel mac, and would like to use the input/output libraries in sacio.a. However, when I try to compile my fortran code, I get some messages /usr/bin/ld: warning /Applications/sac/lib/sacio.a archive's cputype (18, architecture ppc) does not match cputype (7) for specified -arch flag: i386 (can't load from it) /usr/bin/ld: Undefined symbols: _rsac1_ collect2: ld returned 1 exit status Is there a version of sacio.a that works with the intel mac? The sac v... [more]
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LANGLAUDE Philippe - CETE Méditerr./LABO NICE/RISQUE NATUREL - G
2006-08-17 22:55:22
Thank you very much for SAC which is very hepfull for our team. I have a question: I will like concatenate some files recorded continuously. The merge command does not work when there is an overlapping between these files, so I'm thus obliged to cut the files before use 'merge'. Does somebody have another solution to propose to me? thank you in advance. Philippe Langlaude ---------------------------------------------------------------------------- ------------------------- Equipe de Rech... [more]
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LANGLAUDE Philippe - CETE Méditerr./LABO NICE/RISQUE NATUREL - G
2006-08-01 23:00:14
Thank you very much for SAC which is very hepfull for our team. We have a question: 1) we compute 4 spectra (a b c d) with FFT command these spectra have the same frequency delta. 2) then we divide spectrum "a" by spectrum "b" the result is noted "E" 3) and we divide spectrum "c" by spectrum "d" the result is noted "F" 4) Now we want to plot E only for frequencies where F is >3 ... How to do that last operation ? Philippe Langlaude ---------------------------------------------------------... [more]
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LANGLAUDE Philippe - CETE Méditerr./LABO NICE/RISQUE NATUREL - G
2006-08-01 22:52:35
Thank you very much for SAC which is very hepfull for our team we have a question: 1) we compute 4 spectra (a b c d) with FFT command these spectra have the same frequency delta. 2) then we divide spectrum "a" by spectrum "b" the result is noted "E" 3) and we divide spectrum "c" by spectrum "d" the result is noted "F" 4) Now we want to plot E only for frequencies where F is >3 ... How to do that last operation ? Equipe de Recherche "Risques Sismiques" CETE méditerranée * Labora... [more]
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