[ncl-talk] loop error

[Guido Cioni]

The error message is exactly telling you what the problem is.

> fatal:Loop end must be scalar

You have 

> do i = 0,time-1

i is a scalar integer, time is an array. You need to use dimsizes(time)-1.

Also you better not use loops to perform simple operations as they are slower tha assignments. 

> Il giorno 24 mar 2018, alle ore 07:10, Arijeet Dutta <arijeet.uoh at gmail.com> ha scritto:
> 
> Hi all, I am trying to calculate potential temperature as follows
> 
> h = addfile("air.mon.mean.nc <http://air.mon.mean.nc/>","r")
> lat = h->lat
> lon = h->lon
> time = h->time
> temp = h->air
> l = h->level*10
> 
> 
> a = temp(:,:,0,0) ;tim,lv,lat,lon,
> do i = 0,time-1
>         do j = 0,l-1
>                 theta(i,j) = a*(10000/l(j))^0.286
>         end do
> end do
> 
> fatal:Loop end must be scalar, can't execute loop
> 
> Any help?
> 
> Regards
> Arijeet
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