Thread: How to calculate a running average in SAC.

Started: 2020-11-24 15:31:55
Last activity: 2020-11-26 14:10:42
Topics: SAC Help
BARRY HIRSHORN
2020-11-24 15:31:55

Aloha,

I found a command called “smooth” that will perform a running average. However, it does not work on my version of SAC [11/11/2013 (Version 101.6a)] running on OS High Sierra Version 10.13.6 on my 2018 MacBook Pro

Any help on how I can run a moving average appreciated!

Cheers,
Barry



  • George Helffrich
    2020-11-26 10:45:56
    Dear Barry -

    Three other solutions are:

    1) download MacSAC — SMOOTH works on it;
    2) download a more recent version of IRIS’ SAC — SMOOTH might have been fixed
    3) write a program to do a smooth of a single SAC trace and rewrite the file, and use the program in a SAC macro to make your own custom smoother.

    On 25 Nov 2020, at 01:32, BARRY HIRSHORN (via IRIS) <sac-help-bounce<at>lists.ds.iris.edu> wrote:


    Aloha,

    I found a command called “smooth” that will perform a running average. However, it does not work on my version of SAC [11/11/2013 (Version 101.6a)] running on OS High Sierra Version 10.13.6 on my 2018 MacBook Pro

    Any help on how I can run a moving average appreciated!

    Cheers,
    Barry



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    George Helffrich
    george<at>elsi.jp


    • BARRY HIRSHORN
      2020-11-26 11:21:40
      Thanks so much, George!

      Barry


      On Nov 26, 2020, at 12:46 AM, George Helffrich (via IRIS) <sac-help-bounce<at>lists.ds.iris.edu> wrote:

      Dear Barry -

      Three other solutions are:

      1) download MacSAC — SMOOTH works on it;
      2) download a more recent version of IRIS’ SAC — SMOOTH might have been fixed
      3) write a program to do a smooth of a single SAC trace and rewrite the file, and use the program in a SAC macro to make your own custom smoother.

      On 25 Nov 2020, at 01:32, BARRY HIRSHORN (via IRIS) <sac-help-bounce<at>lists.ds.iris.edu <sac-help-bounce<at>lists.ds.iris.edu>> wrote:


      Aloha,

      I found a command called “smooth” that will perform a running average. However, it does not work on my version of SAC [11/11/2013 (Version 101.6a)] running on OS High Sierra Version 10.13.6 on my 2018 MacBook Pro

      Any help on how I can run a moving average appreciated!

      Cheers,
      Barry



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      George Helffrich
      george<at>elsi.jp <george<at>elsi.jp>

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  • Hi Barry,
    You could use functions rms and markptp in a macro to compute a running
    rms. If you are using MacSAC, then have a look at this response from George
    in 2012!
    http://www.iris.washington.edu/pipermail/sac-help/2012-July/001266.html

    Januka

    Januka Attanayake
    Research Fellow | Earthquake Seismology
    Homepage: *https://sites.google.com/site/janukaattanayake
    https://sites.google.com/site/janukaattanayake*

    School of Earth Sciences | McCoy Bldg. 200
    University of Melbourne | Parkville 3010 VIC
    Australia




    On Wed, 25 Nov 2020 at 12:36, BARRY HIRSHORN (via IRIS) <
    sac-help-bounce<at>lists.ds.iris.edu> wrote:


    Aloha,

    I found a command called “smooth” that will perform a running average.
    However, it does not work on my version of SAC [11/11/2013 (Version
    101.6a)] running on OS High Sierra Version 10.13.6 on my 2018 MacBook Pro

    Any help on how I can run a moving average appreciated!

    Cheers,
    Barry



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    Topic home: http://ds.iris.edu/message-center/topic/sac-help/ |
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    • BARRY HIRSHORN
      2020-11-26 11:21:07
      Many thanks Januka!
      Barry


      On Nov 25, 2020, at 5:10 PM, Januka Attanayake <jattanayake<at>gmail.com> wrote:

      Hi Barry,
      You could use functions rms and markptp in a macro to compute a running rms. If you are using MacSAC, then have a look at this response from George in 2012!
      http://www.iris.washington.edu/pipermail/sac-help/2012-July/001266.html

      Januka

      Januka Attanayake
      Research Fellow | Earthquake Seismology
      Homepage: https://sites.google.com/site/janukaattanayake

      School of Earth Sciences | McCoy Bldg. 200
      University of Melbourne | Parkville 3010 VIC
      Australia





      On Wed, 25 Nov 2020 at 12:36, BARRY HIRSHORN (via IRIS) <sac-help-bounce<at>lists.ds.iris.edu <sac-help-bounce<at>lists.ds.iris.edu>> wrote:

      Aloha,

      I found a command called “smooth” that will perform a running average. However, it does not work on my version of SAC [11/11/2013 (Version 101.6a)] running on OS High Sierra Version 10.13.6 on my 2018 MacBook Pro

      Any help on how I can run a moving average appreciated!

      Cheers,
      Barry



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      Topic home: http://ds.iris.edu/message-center/topic/sac-help/ | Unsubscribe: sac-help-unsubscribe<at>lists.ds.iris.edu <sac-help-unsubscribe<at>lists.ds.iris.edu>

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