Re: Convert 3-D to 2-D

From: Dave Allured - NOAA Affiliate <dave.allured_at_nyahnyahspammersnyahnyah>
Date: Wed Nov 20 2013 - 16:54:41 MST

I think this will do what you want, assuming that the calculation of yrmin1
is valid:

year_min = dim_min_n_Wrap (yrmin1, 0)

--Dave

On Wed, Nov 20, 2013 at 3:24 PM, Cary Lynch <lynchc6@uw.edu> wrote:

> I am trying to construct a 2-dim, lat/lon variable that contains the year
> a variable crossed a threshold. I can’t seem to convert the 3-dim (year
> over threshold, lat, lon) to a 2-dim. This should be simple? Any help
> would be appreciated.
>
> My script is as follows:
>
>
>
> htas1= o1->tas(:,:,:) ; historic tas for mod 1.
> tas(time,lat,lon)
>
> ftas1 = n1->tas(:,:,:) ; future tas for mod1.
> Tas(time,lat,lon)
>
> ; ‘time’ = 95, ‘lat’ = 192, ‘lon’ = 288
>
>
>
> min1 = dim_min_n_Wrap(htas1,0)
>
> max1 = dim_max_n_Wrap(htas1,0)
>
>
>
> countmin1 = new((/95,192,288/),float) ; dim(0) = 1 if less
> than min
>
> dummy1 = new((/95,192,288/),float)
>
> countmax1 = new((/95,192,288/),float) ; dim(0) = 1 if greater
> than max
>
> dummy2 = new((/95,192,288/),float)
>
> dummy = 1
>
>
>
> do j = 0,94
>
> countmin1(j,:,:) = mask(dummy1(j,:,:),(ftas1(j,:,:) .lt. min1),True)
>
> countmax1(j,:,:) = mask(dummy2(j,:,:),(ftas1(j,:,:) .gt. max1),True)
>
> end do
>
>
>
> copy_VarMeta(ftas1,countmin1)
>
> copy_VarMeta(ftas1,countmax1)
>
>
>
> yrs1 = new((/95,192,288/),float) ; dim(0) =
> 2006-2100
>
>
>
> do k = 0,94
>
> yrs1(i,:,:) = 2006+i
>
> end do
>
>
>
> copy_VarMeta(ftas1,yrs1)
>
>
>
> yrmin1 = mask(yrs1,(countmin1 .lt. 0), False)
>
> yrmax1 = mask(yrs1,(countmax1 .lt. 0), False)
>
>
>
> copy_VarMeta(ftas1,yrmin1)
>
> copy_VarMeta(ftas1,yrmax1)
>
>
>
> ;*******************************
>
>
>
> This is where I am stuck. Please advise.
>
> --
> Cary Lynch
>
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Received on Wed Nov 20 16:54:53 2013

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