Thread: REMOVE FILTERS

Started: 2021-11-08 03:32:17
Last activity: 2021-11-09 15:27:56
Topics: SAC Help
Muhammad Zafar Iqbal
REMOVE FILTERS
2021-11-08 03:32:17
Hi
I want to remove all kind of filters in my waveform data. How to do?
  • Geo .
    Re: REMOVE FILTERS
    2021-11-08 18:43:56
    Hi Muhammad,
    Which filters are you referring to?

    Januka

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

    School of Geography, Earth & Atmospheric Sciences
    University of Melbourne | Parkville 3010 VIC
    Australia




    On Mon, 8 Nov 2021 at 14:36, Muhammad Zafar Iqbal (via IRIS) <
    sac-help-bounce<at>lists.ds.iris.edu> wrote:

    Hi
    I want to remove all kind of filters in my waveform data. How to do?

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    • Muhammad Zafar Iqbal
      Re: REMOVE FILTERS
      2021-11-09 02:51:51
      I want to remove band pass

    • Muhammad Zafar Iqbal
      Re: REMOVE FILTERS
      2021-11-09 02:56:00
      I want to remove band pass
    • Muhammad Zafar Iqbal
      Re: REMOVE FILTERS
      2021-11-09 04:08:30
      Hi Januka
      Thanks for your asking again.

      In fact my original data was non filtered data. I have applied the band pass filter using sac command. Now, I want to retrieve my original data. I hope you can understand now my question.

      Regards
      • Geo .
        Re: REMOVE FILTERS
        2021-11-09 15:27:56
        If your haven't over written (e.g. with the WRITE OVER function) data after
        flitering, then you just do a "dc all" and read the data back in. If you've
        over written data, you can't recover original data, unfortunately.

        Januka

        On Tue., 9 Nov. 2021, 3:12 pm Muhammad Zafar Iqbal (via IRIS), <
        sac-help-bounce<at>lists.ds.iris.edu> wrote:

        Hi Januka
        Thanks for your asking again.

        In fact my original data was non filtered data. I have applied the band
        pass filter using sac command. Now, I want to retrieve my original data. I
        hope you can understand now my question.

        Regards

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