[ncl-talk] Wondering why I am getting this dimensions error

[Dave Allured - NOAA Affiliate]

"sum_q = 1." defines this variable as scalar.  Then the where statement
attempts to write a 2-D array onto a scalar.  The assignment statement is
not allowed to change dimensions.

One way to fix this would be to use the reassignment operator ":=", which
IS allowed to change dimensions on assignment.

Another way to fix this would be to define sum_q as a 2-D array before the
start of the loop.  I suspect that is what you really intended.


On Wed, Nov 27, 2019 at 10:22 AM Barry Lynn via ncl-talk <ncl-talk at ucar.edu>
wrote:

> Hi:
>
> I have some simple code.
>
>       do k = 0,dims3d(0)-1
>
>        qs(k,:,:) = where(qs(k,:,:).lt.0.1,q_null(k,:,:),qs(k,:,:))
>
>        sum_q = 1.
>
>        sum_q =  where(qs(k,:,:).ge.0.1,sum_q+1,sum_q)
>
>        qs_1(k) = sum(qs(k,:,:))/sum_q+qs_1(k)
>
>       end do
>
>
> Why can't I do the "where" sum?
>
>
> fatal:Number of dimensions on right hand side do not match number of
> dimension in left hand side
>
> --
> Barry H. Lynn, Ph.D
> Senior Associate Scientist, Lecturer,
> The Institute of the Earth Science,
> The Hebrew University of Jerusalem,
> Givat Ram, Jerusalem 91904, Israel
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>
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