[ncl-talk] gc_latlon

[Md. Jalal Uddin]

I want to show the rainfall only within 500 km. Please look at the picture
(within the circle).

[image: jan.png]

On Mon, Mar 18, 2019 at 3:35 PM Soma Roy <somaroy892 at gmail.com> wrote:

> Try to use geolocation circle and based on that cut out the inner values
> by using mask option as available in ncl pages.
>
> Hope this idea help you...
>
> Cheers,
> Soma
>
> On Mon, Mar 18, 2019, 12:59 Md. Jalal Uddin <dmjalal90 at gmail.com wrote:
>
>> Hi all,
>> I wanted to extract rainfall within 500 km from certain lat and lon. I am
>> not getting the right one. any suggestions?
>>
>> f  = addfile("jan500.nc", "r")
>>  prc =f->pre(:,{75:100},{0:30})
>>  lon = f->longitude
>>  lat =f->latitude
>>  prc_reorder = prc(time|:,latitude|:,longitude|:)
>>
>>  prc_reorder&latitude = lat
>>  prc_reorder&longitude = lon
>>
>> lat1 =(/5.5/)
>> lon1 = (/87.0/)
>>
>> do i = 0,dimsizes(lat)-1
>>       do j = 0,dimsizes(lon)-1
>>       if gc_latlon(lat1,lon1,i,j,2,4) .lt.500 then
>>           prc_reorder(:,i,j) =  prc_reorder(:,i,j)
>>               end if
>>       end do
>>  end do
>> ;;;;
>> Jalal
>> --
>> *Md. Jalal Uddin*
>> MSc in Applied Meteorology (English Language)
>> Nanjing University of Information, Science and Technology, China
>> B.Sc. in Disaster Management (Hons.)
>> Patuakhali Science and Technology University, Bangladesh.
>> Cell: +8613260859092, +8801792052662
>> Web: www.dmjalal90.weebly.com
>> Facebook: jalal.hossen.39
>> LinkedIn: https://bd.linkedin.com/in/md-jalal-uddin-80a026b0
>> Twitter: dmjalal90
>> Skype: dmjalal90
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>

-- 
*Md. Jalal Uddin*
MSc in Applied Meteorology (English Language)
Nanjing University of Information, Science and Technology, China
B.Sc. in Disaster Management (Hons.)
Patuakhali Science and Technology University, Bangladesh.
Cell: +8613260859092, +8801792052662
Web: www.dmjalal90.weebly.com
Facebook: jalal.hossen.39
LinkedIn: https://bd.linkedin.com/in/md-jalal-uddin-80a026b0
Twitter: dmjalal90
Skype: dmjalal90
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