[ncl-talk] 3 dimensions to 2 dimensions

[Md. Jalal Uddin]

Hi Rick,
Now, I am getting the following errors (Highlight in red color).

  f = addfile("bob_vscs.nc","r")
  time =f->time
  lat =f->latitude
  lon =f->longitude
  ntim = dimsizes(time)
  nlat = dimsizes(lat)
  nlon = dimsizes(lon)
  TRMM = f->pcp(:,{0:30},{75:100})        ;TRMM(time, latitude, longitude)

  Rain =new((/nlat,nlon/),"float")

    do nl=0,nlat-1
     do ml=0,nlon-1
do nt=0,ntim-1
Rain(nl,ml) = TRMM(nt-1,nl,ml)  ; Subscript out of range, error in
subscript #0
end do
end do
    end do
  copy_VarMeta(TRMM(0,:,:),Rain)    ; fatal:Coordinate variables must be
the same dimension as their dimension    fatal:No coordinate variable
exists for dimension (longitude) in variable (var_to)

Variable: TRMM
Type: float
Total Size: 18720000 bytes
            4680000 values
Number of Dimensions: 3
Dimensions and sizes:   [time | 390] x [latitude | 120] x [longitude | 100]
Coordinates:
            time: [   0..119208]
            latitude: [0.125..29.875]
            longitude: [75.125..99.875]
Number Of Attributes: 7
  long_name :   precipitation (mm/hr)
  _FillValue :  -9999.9
  missing_value :       -9999.9





On Tue, Apr 30, 2019 at 8:48 PM Rick Brownrigg <brownrig at ucar.edu> wrote:

> HI,
>
> It looks like there may be several problems going here:
>
> i) I speculate you mean something more like this:
>   time =f->time
>   lat =f->latitude
>   lon =f->longitude
>   ntim = dimsizes(time)
>   nlat = dimsizes(lat)
>   nlon = dimsizes(lon)
>
> ii) I'm not sure the intent here:
>
>    Rain(nl,ml) = TRMM(nt,nl,ml)
>
> Each time through the inner loop, it will (re)assign the one by one "nt"
> values of TRMM to the same element of Rain(nl, ml), exiting the loop with
> it set to the "nt-1"th value. Its equivalent to foregoing the entire inner
> loop and just saying Rain(nl,ml) = TRMM(nt-1,nl,ml)
>
> Hope that helps,
> Rick
>
>
>
> On Tue, Apr 30, 2019 at 4:00 AM Md. Jalal Uddin <dmjalal90 at gmail.com>
> wrote:
>
>> Hi all,
>>
>> I have tried to take all rainfall data  for each latitude and longitude
>> point and made 2 dimensions from 3 dimensions. I am getting the following
>> errors.
>> fatal:_NclBuildArray: each element of a literal array must have the same
>> dimension sizes, at least one item doesn't
>>
>> The main code:
>>
>> f = addfile("bob_vscs.nc","r")
>>   ntim =f->time
>>   nlat =f->latitude
>>   nlon =f->longitude
>>   TRMM = f->pcp(:,{0:30},{75:100})        ;TRMM(time 390, latitude 120,
>> longitude 100)
>>
>>   Rain =new((/nlat,nlon/),"float")
>>
>>     do nl=0,nlat-1
>>      do ml=0,nlon-1
>> do nt=0,ntim-1
>> Rain(nl,ml) = TRMM(nt,nl,ml)
>> end do
>> end do
>>     end do
>>
>> Could you help me to solve the problem, please?
>>
>> Best Regards,
>> 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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