[Met_help] [rt.rap.ucar.edu #75721] History for TC-Utils - Reg
John Halley Gotway via RT
met_help at ucar.edu
Fri Apr 1 12:23:00 MDT 2016
----------------------------------------------------------------
Initial Request
----------------------------------------------------------------
Dear Sir/ Madam,
How are you doing today.
Thank you for such a wonderful tool to analyze the tc statistics.
I plotted the track errors, (along, across), the units are in nautical
miles. I would like to change to km.
wind speed I want to change to m/s instead of kt.
Can you pl suggest me the modifications that are needed to convert to km? I
am using METv5.1_bugfix.
Or you may send me the modified programs, that I can directly use and
recompile the code.
Thanking you for your help.
Sincerely
Srinivas
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Complete Ticket History
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Subject: TC-Utils - Reg
From: John Halley Gotway
Time: Thu Mar 31 11:57:24 2016
Hello Srinivas,
The MET-TC tools write distances in nautical miles and wind speed in
meters/second, following the conventions used by the National
Hurricane
Center.
While you could change the code to change these units prior to writing
output, I would advise against it. Otherwise, you'd need to make the
same
changes in every future release of the MET code.
Presumably, you are reading these values into some script and doing
more
analysis/plotting on it. My suggestion would be to handle the unit
conversion in that script.
If that doesn't meet your needs and you would like to modify the MET
code,
you are of course welcome to do so. Just let me know and I'll point
you to
the right spot in the code.
Thanks,
John
On Thu, Mar 31, 2016 at 12:52 AM, Srinivas Desamsetti via RT <
met_help at ucar.edu> wrote:
>
> Thu Mar 31 00:52:19 2016: Request 75721 was acted upon.
> Transaction: Ticket created by sreeds82 at gmail.com
> Queue: met_help
> Subject: TC-Utils - Reg
> Owner: Nobody
> Requestors: sreeds82 at gmail.com
> Status: new
> Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=75721 >
>
>
> Dear Sir/ Madam,
> How are you doing today.
>
> Thank you for such a wonderful tool to analyze the tc statistics.
>
> I plotted the track errors, (along, across), the units are in
nautical
> miles. I would like to change to km.
> wind speed I want to change to m/s instead of kt.
>
> Can you pl suggest me the modifications that are needed to convert
to km? I
> am using METv5.1_bugfix.
> Or you may send me the modified programs, that I can directly use
and
> recompile the code.
>
> Thanking you for your help.
> Sincerely
> Srinivas
>
>
------------------------------------------------
Subject: TC-Utils - Reg
From: Srinivas Desamsetti
Time: Thu Mar 31 12:17:51 2016
Dear Sir,
How are you doing today.
Thank you very much.
I have been using "plot_tcmpr.R" to plot track errors and I could not
plot
in km.
I know the conversion factor is 1.852 in order to convert nm to km, I
dont
know how to provide this to scirpt.
Could you please guide me, how I can plot directly the values in km?
Thank you very much.
Wishing you wonderful day.
Srinivas
On Thu, Mar 31, 2016 at 11:27 PM, John Halley Gotway via RT <
met_help at ucar.edu> wrote:
> Hello Srinivas,
>
> The MET-TC tools write distances in nautical miles and wind speed in
> meters/second, following the conventions used by the National
Hurricane
> Center.
>
> While you could change the code to change these units prior to
writing
> output, I would advise against it. Otherwise, you'd need to make
the same
> changes in every future release of the MET code.
>
> Presumably, you are reading these values into some script and doing
more
> analysis/plotting on it. My suggestion would be to handle the unit
> conversion in that script.
>
> If that doesn't meet your needs and you would like to modify the MET
code,
> you are of course welcome to do so. Just let me know and I'll point
you to
> the right spot in the code.
>
> Thanks,
> John
>
> On Thu, Mar 31, 2016 at 12:52 AM, Srinivas Desamsetti via RT <
> met_help at ucar.edu> wrote:
>
> >
> > Thu Mar 31 00:52:19 2016: Request 75721 was acted upon.
> > Transaction: Ticket created by sreeds82 at gmail.com
> > Queue: met_help
> > Subject: TC-Utils - Reg
> > Owner: Nobody
> > Requestors: sreeds82 at gmail.com
> > Status: new
> > Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=75721 >
> >
> >
> > Dear Sir/ Madam,
> > How are you doing today.
> >
> > Thank you for such a wonderful tool to analyze the tc statistics.
> >
> > I plotted the track errors, (along, across), the units are in
nautical
> > miles. I would like to change to km.
> > wind speed I want to change to m/s instead of kt.
> >
> > Can you pl suggest me the modifications that are needed to convert
to
> km? I
> > am using METv5.1_bugfix.
> > Or you may send me the modified programs, that I can directly use
and
> > recompile the code.
> >
> > Thanking you for your help.
> > Sincerely
> > Srinivas
> >
> >
>
>
------------------------------------------------
Subject: TC-Utils - Reg
From: John Halley Gotway
Time: Thu Mar 31 13:55:11 2016
Srinivas,
Ah OK, I understand. Look in the plot_tcmpr.R script for the comments
listed below. At this point, the script has read the data. By adding
the
lines listed below, we can do unit conversions:
########################################################################
#
# Preprocess the tcst data
#
########################################################################
# Convert track errors from nm to km
tcst$TK_ERR = tcst$TK_ERR * 1.852
tcst$ALTK_ERR = tcst$ALTK_ERR * 1.852
tcst$CRTK_ERR = tcst$CRTK_ERR * 1.852
You could define similar unit conversions for winds.
Hope that helps.
Thanks,
John
On Thu, Mar 31, 2016 at 12:17 PM, Srinivas Desamsetti via RT <
met_help at ucar.edu> wrote:
>
> <URL: https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=75721 >
>
> Dear Sir,
>
> How are you doing today.
> Thank you very much.
>
> I have been using "plot_tcmpr.R" to plot track errors and I could
not plot
> in km.
> I know the conversion factor is 1.852 in order to convert nm to km,
I dont
> know how to provide this to scirpt.
> Could you please guide me, how I can plot directly the values in km?
>
> Thank you very much.
> Wishing you wonderful day.
>
> Srinivas
>
>
>
> On Thu, Mar 31, 2016 at 11:27 PM, John Halley Gotway via RT <
> met_help at ucar.edu> wrote:
>
> > Hello Srinivas,
> >
> > The MET-TC tools write distances in nautical miles and wind speed
in
> > meters/second, following the conventions used by the National
Hurricane
> > Center.
> >
> > While you could change the code to change these units prior to
writing
> > output, I would advise against it. Otherwise, you'd need to make
the
> same
> > changes in every future release of the MET code.
> >
> > Presumably, you are reading these values into some script and
doing more
> > analysis/plotting on it. My suggestion would be to handle the
unit
> > conversion in that script.
> >
> > If that doesn't meet your needs and you would like to modify the
MET
> code,
> > you are of course welcome to do so. Just let me know and I'll
point you
> to
> > the right spot in the code.
> >
> > Thanks,
> > John
> >
> > On Thu, Mar 31, 2016 at 12:52 AM, Srinivas Desamsetti via RT <
> > met_help at ucar.edu> wrote:
> >
> > >
> > > Thu Mar 31 00:52:19 2016: Request 75721 was acted upon.
> > > Transaction: Ticket created by sreeds82 at gmail.com
> > > Queue: met_help
> > > Subject: TC-Utils - Reg
> > > Owner: Nobody
> > > Requestors: sreeds82 at gmail.com
> > > Status: new
> > > Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=75721
> >
> > >
> > >
> > > Dear Sir/ Madam,
> > > How are you doing today.
> > >
> > > Thank you for such a wonderful tool to analyze the tc
statistics.
> > >
> > > I plotted the track errors, (along, across), the units are in
nautical
> > > miles. I would like to change to km.
> > > wind speed I want to change to m/s instead of kt.
> > >
> > > Can you pl suggest me the modifications that are needed to
convert to
> > km? I
> > > am using METv5.1_bugfix.
> > > Or you may send me the modified programs, that I can directly
use and
> > > recompile the code.
> > >
> > > Thanking you for your help.
> > > Sincerely
> > > Srinivas
> > >
> > >
> >
> >
>
>
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