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 2019

Bijayananda Dalai
2019-11-19 15:07:47 - 2019-11-19 23:37:14
Good evening sir.I am Bijayananda Dalai from India,currently works as ph.d research scholar at CSIR-National Geophysical research institute,Hyderabad .I have a very small query regarding sac data manipulations(cutting).However, my raw data sets are of sac format that consists of day file(one raw sac file/day/station) and i donot know more about sac files in which portion of the waveform the earthquake is recorded. i just want to apply receiver functions on my raw data sets.For this, data need... [more]
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claudia pavez
2019-11-19 21:19:30 - 2019-11-19 21:23:44
Hello everyone, Probably a very simple question. I already install sac for mac (El Capitan), and almost everything is working fine. However, I cannot use the "ls" command (for example to use a list as input in setrfslow or hk) SAC> ls ERROR 1106: Not a valid SAC command. There is some way to fix this problem? Regards, Claudia
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GUILHERME De MELO
2019-11-18 10:16:58 - 2019-11-18 22:02:30
Dear, Someone know how can I change or remove the OMARKER value in header? I will be very grateful for return. best, Guilherme de Melo
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Casey Kuo
2019-11-16 21:48:02 - 2019-11-18 12:52:48
Hello, I've installed the SAC package and I can plot stuff, but the 'make check' command throws out a pytest.sh error along with quite a few undefined header warnings. I've included the output in a text file since it's quite long. Thanks for the help.
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BARRY HIRSHORN
2019-11-16 17:29:15
Hi All! When installing SAC v101.6 (on a 2018 MacBook Pro, running “High Sierra 10.13.6), I am successful able to run: % mkdir build % cd build % ../sac-101.6a/configure --prefix=/usr/local/sac > ../130612.build % make >> ../130612.build But running: % make install >> ../130612.build generates the following nasty looking errors:: /usr/include/secure/_common.h:39:53: note: expanded from macro '__darwin_obsz' #define __darwin_obsz(object) __builtin_object_size (object, _USE_FORTIFY_LEVEL >... [more]
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claudia pavez
2019-11-14 12:16:14 - 2019-11-15 13:40:08
Hello everyone, I am trying to use a MACRO for data processing that is available in the Charles Ammon's webpage. The entire code is working quite well, but for some reason that I can not understand the code is not capable to read the files continuously. When I try to process a lot of data, I just can process the vertical component continuously but the files for the N and E components don't change. So, at the end, I just finish processing vertical seismograms, which is not that I need to do :... [more]
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Onur Tan
2019-11-03 01:54:00
Dear Susan, In my previous email, I gave the 1000sps output of a seismometer. I have also 200sps output from the seismometer. So, There are two observed data set with 200 and 1000sps at the same time. the seismogram after decimation 5 with FILTER OFF option is similar with the 200sps output of the seismometer. Actually I cannot realize my problem with sine example. However, I generate seismogram with FUNCGEN. I see the aliasing on the P-phase after "decimation 5 FILTER ON" command. Small ... [more]
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Onur Tan
2019-11-02 22:53:26
Dear all, I have 1000sps data. When I apply decimation (#5) with option FILTER ON, I see strange waveform. However, FILTER OFF option gives much appropriate waveform. I am confused with FILTER option. best regards Onur Tan PS: SAC 101.6a on Ubuntu
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