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 April 2012

Neil Selby
2012-04-25 15:19:26 - 2012-04-30 14:41:09
Hello SAC users, I want to use "plotpk" with the "savelocs on" option to save picks to blackboard variables, and then do some calculations with the blackboard variables (specifically, measure amplitude and period in order to calculate magnitudes). To do this I need to temporarily unset the time information in the SAC header, so that plotpk saves the x locations as offsets, rather than as gmt date-time strings. This is all fine. However, I find that the blackboard variables saved are no… [more]
Rakotoarisaona Hasiniaina
2012-04-28 06:03:06
No replies
Tuna Eken via LinkedIn
2012-04-27 03:33:37
LinkedIn ------------ Tuna Eken requested to add you as a connection on LinkedIn: ------------------------------------------ Sac Help, I'd like to add you to my professional network on LinkedIn. - Tuna Accept invitation from Tuna Eken… [more]
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Sheila Peacock
2012-04-26 23:17:31
Dear All, should "readgse" get the station latitude, longitude, elevation and emplacement depth from the "STA2" line of a standard IMS file and put them into the SAC header STLA and STLO, STEL and STDP? It doesn't seem to at present. It would be most useful if it did - save us a stage of data-conversion when we receive data by AutoDRM. Thanks! Sheila Peacock, Blacknest.
Rakotoarisaona Hasiniaina
2012-04-26 17:43:36
No replies
Carl Tape
2012-04-18 22:26:37 - 2012-04-19 16:02:21
Dear sac-help: I was wondering if you could clarify the convention for CMPINC. CMPINC is define here as "Component incident angle (degrees from vertical). vang in the antelope schema is defined as: This attribute measures the angle between the sensitive axis of a seismometer and the outward-pointing vertical direction. For a vertically oriented seismometer, vang = 0, or 180 (to reverse the sense of the instrument). For a horizontally o… [more]
Hugo Nuñez
2012-04-16 00:08:16
Regard, Is there any way to shade or fill color signals in the SAC, an example would be as is often done for receiver functions Thanks, Hugo Nuñez
No replies
Rakotoarisaona Hasiniaina
2012-04-11 09:49:55
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Rakotoarisaona Hasiniaina
2012-04-10 22:52:37
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Rakotoarisaona Hasiniaina
2012-04-09 17:54:14
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Joe Fletcher
2012-04-07 00:43:36
Today I upgraded to sac 101.5c. It now provides big and little endian compatibility which we needed. However, it is spitting out copious warnings about missing header values such as WARNING: Undefined header field value. norid nevid nwfid nxsize nysize kevnm ko ka kt0 kt1 kt2 kt3 kt4 kt5 WARNING: Undefined header field value. norid nevid nwfid nxsize nysize kevnm ko ka kt0 kt1 kt2 kt3 kt4 kt5 kt6 WARNING: Undefined header field value. norid nevid nwfid nxsize nysize kevnm ko ka kt0 kt1 k… [more]
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Mohit Agrawal
2012-04-05 18:09:21 - 2012-04-05 21:04:02
Hello Everybody, I am running Chuck Ammon's codes for receiver functions which is generating the sac files like smp.mod_sp.r, smp.mod_sp.z, where the smp.mod is the name of the velocity model. Now the problem is that when I am trying to read these sac file it is showing some error like " ERROR 1301: No data files read in." I have tried to read these files on 64 as well as 32 bit systems both but couldn't be able to read . Can anybody tell me what would be the possible problem ? Thanks Rega… [more]
2012-04-04 20:04:20 - 2012-04-05 03:22:06
Hi, I am attempting to use the SAC input/output libraries to compile a Fortran77 code for reading and filtering SAC data. I seem to be having trouble linking to the libraries: >g77 -C -ffixed-line-length-0 -I/usr/local/sac/include -L/usr/local/sac/lib -lsacio filtersac.f -o filtersac ld: warning: in /usr/local/sac/lib/libsacio.a, file was built for unsupported file format which is not the architecture being linked (i386) Undefined symbols: "_rsac1_", referenced from: _MAIN__ in cc0Tk2C… [more]
Frederik Tilmann
2012-04-04 22:54:30
Hello do the external interface commands still work, ie. compiled commands into a library (as defined by SACSOLIST), which need to be activated with load command (see sac manual I used to have some commands that used to work (a long time ago, admittedly), but now start working (I can tell from some logging messages beinng generated), but then quit with segmentation fault before returning to sac prompt. This i… [more]
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Rakotoarisaona Hasiniaina
2012-04-04 19:22:27
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04:41:24 v.f0c1234e