Thread: distaz output units

Started: Dec. 7, 2011, 11:50 a.m.
Last activity: Dec. 7, 2011, 7:55 p.m.
Topics: Web Services
Oliver Henriot
Dec. 7, 2011, 11:50 a.m.
Dear IRIS webservices list members,

Can anyone tell me in what units the distance output of Distaz is? I
doesn't seem to be specified on the services' page.

Thanks.

Best regards,

Oliver Henriot

  • Chad Trabant
    Dec. 7, 2011, 8:54 a.m.

    Hi Oliver,

    The result values are all in degrees, we will clarify that and other aspects of the calculation in a future update.

    regards,
    Chad

    On Dec 7, 2011, at 2:50 AM, Oliver Henriot wrote:

    Dear IRIS webservices list members,

    Can anyone tell me in what units the distance output of Distaz is? I doesn't seem to be specified on the services' page.

    Thanks.

    Best regards,

    Oliver Henriot
    _______________________________________________
    webservices mailing list
    webservices<at>iris.washington.edu
    http://www.iris.washington.edu/mailman/listinfo/webservices



    • Oliver Henriot
      Dec. 7, 2011, 7:55 p.m.
      Dear list users,

      Thank you Philip and Chad for this precious information.

      Best regards,

      Oliver

      On 07/12/2011 17:54, Chad Trabant wrote:
      Hi Oliver,

      The result values are all in degrees, we will clarify that and other aspects of the calculation in a future update.

      regards,
      Chad

      On Dec 7, 2011, at 2:50 AM, Oliver Henriot wrote:

      Dear IRIS webservices list members,

      Can anyone tell me in what units the distance output of Distaz is? I doesn't seem to be specified on the services' page.

      Thanks.

      Best regards,

      Oliver Henriot
      _______________________________________________
      webservices mailing list
      webservices<at>iris.washington.edu
      http://www.iris.washington.edu/mailman/listinfo/webservices

      _______________________________________________
      webservices mailing list
      webservices<at>iris.washington.edu
      http://www.iris.washington.edu/mailman/listinfo/webservices


  • Philip Crotwell
    Dec. 7, 2011, 9:35 a.m.
    Hi

    Pretty sure they are degrees as the distance from (0,0) to (0,90) is
    90, but it would be nice if that was specified in the docs.

    It would also be nice to document whether it uses an ellipticity
    correction. Chad said in an email that the answer was yes, but that
    information is not on the web page.

    Is there any reason that the calculation source code is not publicly
    available? Seems like the DMC should open source this type of thing.
    Just fyi, I have put distaz routines in several languages, with
    ellipticty, here if you are interested in calculating locally and
    being able to see exactly what is happening.

    http://www.seis.sc.edu/software/distaz/

    Philip

    On Wed, Dec 7, 2011 at 5:50 AM, Oliver Henriot
    <Oliver.Henriot<at>ujf-grenoble.fr> wrote:
    Dear IRIS webservices list members,

    Can anyone tell me in what units the distance output of Distaz is? I doesn't
    seem to be specified on the services' page.

    Thanks.

    Best regards,

    Oliver Henriot
    _______________________________________________
    webservices mailing list
    webservices<at>iris.washington.edu
    http://www.iris.washington.edu/mailman/listinfo/webservices

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