Thread: Bug when using addf

Started: 2012-07-07 00:59:14
Last activity: 2012-07-10 01:44:27
Topics: SAC Help
Yihe Huang
2012-07-07 00:59:14
Dear there,

Whenever I use the command "addf", I encounter this error: "Resulting error
from shift exceeded tolerance (1e-6): 0.00020053". Could I know what does
this error mean?

Many thanks!
Yihe

  • George Helffrich
    2012-07-07 16:29:55
    Dear Yihe Huang -

    This message arises when time differences are calculated, to make sure they can be accurately represented by SAC. I suspect that your files have very different zero times and are made to be temporally correspond by differences in B (begin time). If this is true, synchronize your files to the same zero time before doing your ADDF operation.

    On 7 Jul 2012, at 01:59, Yihe Huang wrote:

    Dear there,

    Whenever I use the command "addf", I encounter this error: "Resulting error from shift exceeded tolerance (1e-6): 0.00020053". Could I know what does this error mean?

    Many thanks!
    Yihe
    _______________________________________________
    sac-help mailing list
    sac-help<at>iris.washington.edu
    http://www.iris.washington.edu/mailman/listinfo/sac-help



    George Helffrich
    george.helffrich<at>bris.ac.uk



    • Yihe Huang
      2012-07-10 01:44:27
      Dear George,

      Thanks very much for your help. I made the files to the same beginning
      time, and now it works, though I got the warning like 'Time Overlap'.

      Best regards,
      Yihe

      2012/7/7 George Helffrich <george.helffrich<at>bristol.ac.uk>

      Dear Yihe Huang -

      This message arises when time differences are calculated, to make
      sure they can be accurately represented by SAC. I suspect that your files
      have very different zero times and are made to be temporally correspond by
      differences in B (begin time). If this is true, synchronize your files to
      the same zero time before doing your ADDF operation.

      On 7 Jul 2012, at 01:59, Yihe Huang wrote:

      Dear there,

      Whenever I use the command "addf", I encounter this error: "Resulting
      error from shift exceeded tolerance (1e-6): 0.00020053". Could I know what
      does this error mean?

      Many thanks!
      Yihe
      _______________________________________________
      sac-help mailing list
      sac-help<at>iris.washington.edu
      http://www.iris.washington.edu/mailman/listinfo/sac-help



      George Helffrich
      george.helffrich<at>bris.ac.uk



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