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 2017

Thamer Banjar
2017-11-27 23:06:55 - 2017-11-28 04:24:05
I have 100 files and I want to normalise the traces by using Macro. I wrote this script ( r *DA01*/. rmean/. rtrend/. envelope/. lh depmax depmin/. setaa a (max &1,depmax)/. setbb b (min &1,depmin)/. div (max %a (abs %b))/.) I want to take the depmax and depmin for each file and do the calculation, but the used depmax & depmin in the script is only from the first file. How can I take the data for each file?!
Sunil .
2017-11-24 02:54:11 - 2017-11-24 20:08:40
Dear SAC users, I have a synthetic ASCII file have two column time and amplitude, which I have converted to sac binary using xy2sac. The problem arises while setting the origin time of the sac binary file. By default sac binary origin time is set as -12345. I am not able to change the kzdate. Somehow, I able to set the kztime having omarker as 4.5275e+11. How to set the actual kzdate and kztime in the sac binary header. I will appreciate any help or suggestions. Thank you, Sunil ... [more]
aurora santiago
2017-11-22 16:18:52 - 2017-11-23 19:33:51
Hi. Will someone know how to move the scale of colors, to any position, that comes out mounted on the "y" axis of the spectrograms? I want to move it to a position outside the graph to avoid confusing the scale referred to the "y" axis with the color scale. Thank you
Dear SAC User, You need to just untar the sac tar file to your home directory and set the appropriate path for it to able to run. And that your are done, it should be ableto run. Regards, Joseph On Nov 20, 2017 20:01, <&quot;조인혜 &lt; gt;&quot;> wrote: Hello, I'm Inhye JO. I got the source code of the SAC to make 32 bit base. Because my notebook has 32 bit environment in centOS 6.9. I read the 'README' but I cannot find the manual about compil... [more]
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Hello, I'm Inhye JO. I got the source code of the SAC to make 32 bit base. Because my notebook has 32 bit environment in centOS 6.9. I read the 'README' but I cannot find the manual about compiling SAC. So how can I know about compiling SAC to 32 bit version in CentOS 6.9. Tell me where the file that describe compiling in source code zip file or how can I search the manual about that. Please write back the answer mail soon.Thank you.
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2017-11-20 05:38:33
I'm doing my reasearch about ambient noise. To process the data in the software, header (B E KZTime and KZDate) must be same in all data. To change it, i need to cut the unuse parts of seismogram. Is there any script that can do that? Cause i've tried CUTIM command, but the KZTime-KZdate and B-E wouldnt match. If i synchronize it first, KZTime-KZdate in all data will be same. After that, i CUTIM it and B E values become same in all data but KZTime and KZdate back to the initial values. ... [more]
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Richard Godfrey
2017-11-15 18:54:26 - 2017-11-19 02:00:34
Hi, SAC users: I have been trying to calculate the cross-correlation function between two signals (both of contains 240000 data points). For this I'm using the function CORRELATION with these parameters: NUMBER 30 LENGTH 62 TYPE HANNING. When I execute this command this message shows up: "Segmentation fault (core dumped)". So I made some tests with other parameters and I found out that this command executes well if I'm using 5 windows. Then I tried with the autocorrelation function for ... [more]
Thamer Banjar
2017-11-09 23:44:33 - 2017-11-10 06:49:20
I have download the SAC software but i don’t know how to install it in Mac so i can use it in terminal. I have unzipped the downloaded file from IRIS normally and I got folders and files in SAC folder Could anyone tells me how to install it in Terminal to use the SAC In addition my path of the software is: /Users/iTSB10/Downloads/sac
mukesh kumar
2017-11-09 17:09:39 - 2017-11-09 17:50:49
Hello Sac Users, I want to multiply or divide a set of data points in a sac file with a constant. Please suggest me how to do this? Thank you very much. Regards, Mukesh Kumar Das JRF (Research Scholar) Department of Applied Geophysics Indian lnstitute of Technology (Indian School of Mines) Dhanbad, Jharkhand-826004, India Mob +918873563108 +918340601230
Roberto Cabieces Diaz
2017-11-03 00:23:07 - 2017-11-03 17:52:43
Hello Everyone, I am a new sac user and I am trying to start it. but one error is stopping the problem. dyld: Library not loaded: /usr/X11/lib/libSM.6.dylib Referenced from: /usr/local/sac/bin/sac Reason: image not found Please, someone can help me to fix this problem
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