A forum for SAC users to exchange ideas and ask questions about SAC usage, installation, portability, etc.
Active Message Threads for January 2008
David Tapia Pozos
Hello, I'm using labview to adquire data coming from a seismic unit. I want to save data in SAC format and after to recover them. I would like to know if you can provide me some VI examples to write and read sac files. best regards, David Tapia
writing SAC files - David Tapia Pozos - 2008-02-05 02:33:12
The Linux binaries distribution (sac-101.1-linux_x86.tar.gz) was built on CentOS 5. We found that when trying to open sac on a CentOS 4 machine, it bombed. IRIS has replaced the Linux binary distribution with one built on CentOS 4.5. This seems to work on CentOS 5 as well. Documentation (Readme and History) files have been amended to reflect this change.
David Tapia Pozos
2008-01-28 20:25:52 - 2008-01-28 23:45:44
Hello, My principal question: Is there a SAC version for windows XP and where can I get it ? Please could you tell me the link to download the library sac.a to create my own files with sac format. thanks a lot regards David Tapia.
Re: information about SAC - Brian Savage - 2008-01-28 23:45:44
Everyone, I am new to SAC and having problems with the merge command. I am trying to merge vertical component files from one station over a day. The data is recorded in 30 minute sections. The error I am getting occurs as follows: WARNING: Time gap (zeros added): 07.223.00.26.56.9462.1.sac 07.223.03.26.56.9462.1.sac END1: 2007 223 2 56 56 681 BEG2: 2007 223 3 26 56 680 I can't figure out the problem and the headers aren't offering me any clues. FILE: 07.223.00.26.56.9462.1.sac - 1… [more]
When trying to remove the instrument response using evalresp (sac-command: transfer from evalresp fname RESP.AU.ARMA..BHZ to vel freqlimits 0.005882 0.006250 0.250000 0.333333) we get the following error: EVRESP ERROR (ARMA.AU..BHZ [File: ./RESP.AU.ARMA..BHZ; Start date: 2006,340,00:00:00.0000; Stage: 5]): parse_coeff; Unsupported filter type, IIR and Analog filters should be represented as blockette  filters, skipping to next response now No transfer function appli… [more]
2008-01-22 22:09:49 - 2008-01-23 01:01:14
Hello, How is it possible to perform operations in the frequency domain with sac? For instance, once the fft of two time series have been computed, how can I divide one spectra by the other?
Re: operations in the frequency domain - andreas wessel - 2008-01-23 01:01:14