[ncl-talk] IBTrACS: storm tracking problem

Thu Jan 28 06:14:57 MST 2021

It works now. Thank you, all, for your help.

On Thu, 28 Jan 2021 at 17:59, Rashed Mahmood <rashidcomsis at gmail.com> wrote:

> Sorry for chim-in here...I think Adams suggestions are correct and the NCL
> is doing exactly what it is supposed to do.
>
> The problem is how you read the data. Your data contains all storm tracks
> for 2019 and the way you are using "ind" function it would get all tracks
> because you are using 2019 for finding the tracks. This is the reason all
> tracks are plotted as one single line.
>
> In this case, what you need is to select tracks based on either ID and
> Name of the typhoons. See attached modified script and the figure.
>
> hope that helps!
>
> Rashed
>
>
>
> On Thu, Jan 28, 2021 at 4:29 AM Md. Jalal Uddin via ncl-talk <
> ncl-talk at mailman.ucar.edu> wrote:
>
>> Thank you, sir, for your kind help. I am getting the same result as
>> before. Please see the attached file.
>>
>> Regards,
>> Jalal
>>
>> On Thu, 28 Jan 2021 at 06:18, Adam Phillips <asphilli at ucar.edu> wrote:
>>
>>> Hi Jalal,
>>> As you switched to using gsn_add_polyline/gsn_add_polymarker, my
>>> previous advice will not work. The gs resources do not allow one to specify
>>> multiple colors for multiple entries. Looking at your script, it looks to
>>> me like you are only drawing one storm path, but your graphic shows
>>> multiple. stormLat/stormLon look like single dimensioned arrays. (Maybe I
>>> am misreading your code though.)
>>>
>>> In any case, assuming you have multiple tracks, you need to loop over
>>> each track, setting each track a different color along the way:
>>> ; ntracks is the number of tracks to be plotted
>>>
>>> colors = (/"red","blue","green","yellow"/)   ; and so on and so on
>>> d1 = new(ntracks,graphic)
>>> d2 = d1
>>> do gg = 0,ntracks-1   ; loop over each track
>>>     resp at gsLineColor = colors(gg)
>>>     amres at gsMarkerColor = colors(gg)
>>>     d1(gg) = gsn_add_polyline(wks,map,stormLon,stormLat,resp)
>>>     d2(gg) = gsn_add_polymarker(wks,map,stormLon,stormLat,amres)
>>> end do
>>> draw(map)
>>> frame(wks)
>>>
>>> For the colors, you can alternatively go old school and read in a
>>> colormap directly and just refer to color indices:
>>> gsn_define_colormap(wks,"srip_reanalysis") ; only has 19 colors
>>> ; (no need to set a colors array)
>>> do gg = 0,ntracks-1   ; loop over each track
>>>     resp at gsLineColor = gg+2
>>>     amres at gsMarkerColor = gg+2
>>>
>>> Anyway, the above should at the very least be able to get you started.
>>> Good luck!
>>> Adam
>>>
>>>
>>> On Mon, Jan 25, 2021 at 6:52 PM Md. Jalal Uddin <dmjalal90 at gmail.com>
>>> wrote:
>>>
>>>> Sorry, I forgot to add the updated script. Please see attached.
>>>>
>>>> On Tue, 26 Jan 2021 at 07:59, Adam Phillips <asphilli at ucar.edu> wrote:
>>>>
>>>>> Hi Jalal,
>>>>> You did not send an updated version of your script, so I can only
>>>>> address what you are doing by looking at the script attached to your
>>>>> initial ncl-talk email. Assuming that you are drawing all the tracks with a
>>>>> single gsn_csm_xy plot call, you will need to set the color of each marker
>>>>> using the xyMarkerColors resource.
>>>>>
>>>>> http://www.ncl.ucar.edu/Document/Graphics/Resources/xy.shtml#xyMarkerColors
>>>>> An example of doing this can be seen in XY example 37 here:
>>>>> http://www.ncl.ucar.edu/Applications/xy.shtml#ex37
>>>>> Hope that helps!
>>>>> Adam
>>>>>
>>>>>
>>>>> On Mon, Jan 18, 2021 at 6:52 AM Md. Jalal Uddin via ncl-talk <
>>>>> ncl-talk at mailman.ucar.edu> wrote:
>>>>>
>>>>>> Hi all,
>>>>>>
>>>>>> I have solved the previous issue. However, I am still facing a
>>>>>> problem. All typhoons are getting one line (attached figure), but every
>>>>>> typhoon should have a different line.
>>>>>>
>>>>>> Any suggestions would be appreciated.
>>>>>>
>>>>>> On Sun, 17 Jan 2021 at 12:28, Md. Jalal Uddin <dmjalal90 at gmail.com>
>>>>>> wrote:
>>>>>>
>>>>>>> Hi all,
>>>>>>>
>>>>>>> I am getting a map for only one typhoon instead of all (attached
>>>>>>> figure). I followed the ibtracs_1.ncl example (
>>>>>>> https://www.ncl.ucar.edu/Applications/Scripts/ibtracs_1.ncl). I
>>>>>>> need to modify the following code.
>>>>>>>
>>>>>>> ID      = 2
>>>>>>>  year  = 2019
>>>>>>>
>>>>>>> if( ID.ge.2 ) then
>>>>>>>     stormInd = ind( ( year.eq.stormYear ).and.( ID.eq.stormID ) )
>>>>>>>   else
>>>>>>>     stormInd = ind( stormID.gt.ID )
>>>>>>>   end if
>>>>>>>
>>>>>>>   stormLat = Latitude(stormInd)
>>>>>>>   stormLon = Longitude(stormInd)
>>>>>>>
>>>>>>> The full code and data have been added in the attachment.
>>>>>>>
>>>>>>> Best regards,
>>>>>>> Jalal
>>>>>>> --
>>>>>>> *Md. Jalal Uddin*
>>>>>>> Founder and Director of Research Society (
>>>>>>> https://researchsociety20.org/founder-and-director/)
>>>>>>> PhD candidate - Atmospheric Physics and Atmospheric Environment
>>>>>>> (NUIST)
>>>>>>> M.Sc. in Applied Meteorology (NUIST)
>>>>>>> B.Sc. in Disaster Management (PSTU)
>>>>>>> Email: dmjalal90 at nuist.edu.cn
>>>>>>> Personal website: https://dmjalal90.weebly.com/
>>>>>>> Research gate profile:
>>>>>>> https://www.researchgate.net/profile/Md_Uddin125
>>>>>>> YouTube channel: http://www.youtube.com/c/MdJalalUddindmjalal90
>>>>>>> Cell: +8613260859092, +8801792052662
>>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> *Md. Jalal Uddin*
>>>>>> Founder and Director of Research Society (
>>>>>> https://researchsociety20.org/founder-and-director/)
>>>>>> PhD candidate - Atmospheric Physics and Atmospheric Environment
>>>>>> (NUIST)
>>>>>> M.Sc. in Applied Meteorology (NUIST)
>>>>>> B.Sc. in Disaster Management (PSTU)
>>>>>> Email: dmjalal90 at nuist.edu.cn
>>>>>> Personal website: https://dmjalal90.weebly.com/
>>>>>> Research gate profile:
>>>>>> https://www.researchgate.net/profile/Md_Uddin125
>>>>>> YouTube channel: http://www.youtube.com/c/MdJalalUddindmjalal90
>>>>>> Cell: +8613260859092, +8801792052662
>>>>>> _______________________________________________
>>>>>> ncl-talk mailing list
>>>>>> ncl-talk at mailman.ucar.edu
>>>>>> List instructions, subscriber options, unsubscribe:
>>>>>> https://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Adam Phillips
>>>>> Associate Scientist,  Climate and Global Dynamics Laboratory, NCAR
>>>>> www.cgd.ucar.edu/staff/asphilli/   303-497-1726
>>>>>
>>>>> <http://www.cgd.ucar.edu/staff/asphilli>
>>>>>
>>>>
>>>>
>>>> --
>>>> *Md. Jalal Uddin*
>>>> Founder and Director of Research Society (
>>>> https://researchsociety20.org/founder-and-director/)
>>>> PhD candidate - Atmospheric Physics and Atmospheric Environment (NUIST)
>>>> M.Sc. in Applied Meteorology (NUIST)
>>>> B.Sc. in Disaster Management (PSTU)
>>>> Email: dmjalal90 at nuist.edu.cn
>>>> Personal website: https://dmjalal90.weebly.com/
>>>> Research gate profile: https://www.researchgate.net/profile/Md_Uddin125
>>>>
>>>> YouTube channel: http://www.youtube.com/c/MdJalalUddindmjalal90
>>>> Cell: +8613260859092, +8801792052662
>>>>
>>>
>>>
>>> --
>>> Adam Phillips
>>> Associate Scientist,  Climate and Global Dynamics Laboratory, NCAR
>>> www.cgd.ucar.edu/staff/asphilli/   303-497-1726
>>>
>>> <http://www.cgd.ucar.edu/staff/asphilli>
>>>
>>
>>
>> --
>> *Md. Jalal Uddin*
>> Founder and Director of Research Society (
>> https://researchsociety20.org/founder-and-director/)
>> PhD candidate - Atmospheric Physics and Atmospheric Environment (NUIST)
>> M.Sc. in Applied Meteorology (NUIST)
>> B.Sc. in Disaster Management (PSTU)
>> Email: dmjalal90 at nuist.edu.cn
>> Personal website: https://dmjalal90.weebly.com/
>> Research gate profile: https://www.researchgate.net/profile/Md_Uddin125
>> YouTube channel: http://www.youtube.com/c/MdJalalUddindmjalal90
>> Cell: +8613260859092, +8801792052662
>> _______________________________________________
>> ncl-talk mailing list
>> ncl-talk at mailman.ucar.edu
>> List instructions, subscriber options, unsubscribe:
>> https://mailman.ucar.edu/mailman/listinfo/ncl-talk
>
>

-- 
*Md. Jalal Uddin*
Founder and Director of Research Society (
https://researchsociety20.org/founder-and-director/)
PhD candidate - Atmospheric Physics and Atmospheric Environment (NUIST)
M.Sc. in Applied Meteorology (NUIST)
B.Sc. in Disaster Management (PSTU)
Email: dmjalal90 at nuist.edu.cn
Personal website: https://dmjalal90.weebly.com/
Research gate profile: https://www.researchgate.net/profile/Md_Uddin125
YouTube channel: http://www.youtube.com/c/MdJalalUddindmjalal90
Cell: +8613260859092, +8801792052662
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.ucar.edu/pipermail/ncl-talk/attachments/20210128/88a71bbb/attachment.html>