[ncl-talk] Query related to Multiple Cyclonic tracks.

[Mary Haley]

Hi Barry,

Thanks for providing a sample trajectory script.

I did try to run it, and got an error about not having enough colors.  This
is due to the code that gets the pressure ranges.  A pressure range of "3"
is being hard-coded, but the pressures (in one case) go from 2629 to 2924,
which gives you over 90 levels.

I cleaned up this code a little to fix this, and hopefully make it so you
don't need to hard-code the pressure increment. Note: this code assumes
that the pressures can be nicely represented by integers.

;----------------------------------------------------------------------

;  Calculate the pressure range for coloring markers.

;----------------------------------------------------------------------

function get_pressure_range(pres)
begin
;  pres_incr = 3                             ; Increment for pressure
values
;  pres_start = min(toint(pres))+pres_incr   ; start a little above the
minimum pressure
;  pres_end   = max(toint(pres))-pres_incr   ; end a little below the
maximum pressure

  mnmxint    = nice_mnmxintvl( min(pres), max(pres), 18, False)
  pres_start = toint(mnmxint(0))
  pres_end   = toint(mnmxint(1))
  pres_incr  = toint(mnmxint(2))
  if(pres_incr.eq.0) then
    print("get_pressure_range: ERROR: pres_incr = 0, can't continue")
    exit
  end if
  pres_span  = ispan(pres_start,pres_end,pres_incr)
  return(pres_span)
end

--Mary



On Fri, Feb 2, 2018 at 4:08 AM, Barry Lynn via ncl-talk <ncl-talk at ucar.edu>
wrote:

> Please find.
>
> On Fri, Feb 2, 2018 at 8:24 AM, revathi cherry via ncl-talk <
> ncl-talk at ucar.edu> wrote:
>
>> Hello Everyone !
>>
>> I am G. Revathi from India.
>>
>> I am new to this NCL group. I am working on multiple cyclone tracks.
>>
>> Please anyone could inform me how to write a sample script for multiple
>> cyclonic tracks as I really need it. It will help my thesis work.
>> Anyone's work would be highly appreciated.
>>
>>
>> With Regards!
>>
>> *Gandiboyina Revathi*
>> Research Scholar
>> Department of Meteorology and Oceanography
>> Andhra University.
>>
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>>
>
>
> --
> Barry H. Lynn, Ph.D
> Senior Lecturer,
> The Institute of the Earth Science,
> The Hebrew University of Jerusalem,
> Givat Ram, Jerusalem 91904, Israel
> Tel: 972 547 231 170
> Fax: (972)-25662581
>
> C.E.O, Weather It Is, LTD
> Weather and Climate Focus
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