From: Dennis Shea <shea_at_nyahnyahspammersnyahnyah>

Date: Thu Jan 24 2013 - 07:18:26 MST

Date: Thu Jan 24 2013 - 07:18:26 MST

variable > 2GB are not an issue for NCL 6.0.0 and higher

If you are encountering a memory error, it is likely that

you are exceeding your operating system memory

On 1/24/13 4:22 AM, Hyacinth Nnamchi wrote:

*>
*

*> Hi Dennis,
*

*> A more fundamental constraint is the size of my data: 624x29x193x256 and 624x193x256, which exceed 2G by far even before I create additional arrays. I'll therefore have to subset at some fixed levels and average directly. Thanks for your repeated hints, they may be useful for me elsewhere.
*

*> Hyacinth
*

*>
*

*>> Date: Wed, 23 Jan 2013 10:10:47 -0700
*

*>> From: shea@ucar.edu
*

*>> To: hyacinth.1@hotmail.com
*

*>> CC: ncl-talk@ucar.edu
*

*>> Subject: Re: Vertical averaging using varying depths
*

*>>
*

*>> The denominators should have a 2nd argumenty
*

*>>
*

*>> dim_sum_n(dz) ==> dim_sum_n(dz , 0)
*

*>> dim_sum_n(dz4) ==> dim_sum_n(dz4, 1) ;
*

*>>
*

*>> On 01/23/2013 09:09 AM, Hyacinth Nnamchi wrote:
*

*>>> Thanks for your response Dennis, I'll try out your suggestion.
*

*>>>
*

*>>> Hyacinth
*

*>>>
*

*>>>
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*>>>
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*>>> > Date: Mon, 21 Jan 2013 11:26:15 -0700
*

*>>> > From: shea@ucar.edu
*

*>>> > To: hyacinth.1@hotmail.com
*

*>>> > CC: ncl-talk@ucar.edu
*

*>>> > Subject: Re: Vertical averaging using varying depths
*

*>>> >
*

*>>> >
*

*>>> > There can not be function for everything.
*

*>>> > You can always write your own.
*

*>>> > Also, is the (x,y,z,t) fortran ordering???
*

*>>> > Is 'z' one dimensional or 4 dimensional?
*

*>>> >
*

*>>> > let: dz=layer_thickness,
*

*>>> > q=variable, fortran(x,y,z,t)=>ncl(t,z,y,x) ; 0,1,2,3
*

*>>> >
*

*>>> > z_zavg = dim_sum_n(q*dz, 1)/dim_sum_n(dz) ; q and dz (x,y,z,t)
*

*>>> > --
*

*>>> > dz4 = conform(dz,z,1)
*

*>>> > z_zavg = dim_sum_n(q*dz4, 1)/dim_sum_n(dz4) ; q(x,y,z,t), dz(z)
*

*>>> >
*

*>>> > On 1/21/13 10:00 AM, Hyacinth Nnamchi wrote:
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*>>> > >
*

*>>> & gt; > Hi users,
*

*>>> > > I want to calculate the vertical average of a 4D (x,y,z,t) ocean
*

*>>> variable. The problem is that the depths will have to vary: I want to
*

*>>> use the thermocline depth (already calculated, x,y,t) as the base at
*

*>>> each grid point, for the vertical vertical averaging. Is there a
*

*>>> way/function to do this ncl?
*

*>>> > > Thanks in advance.
*

*>>> > > Hyacinth
*

*>>> > >
*

*>>> > >
*

*>>> > >
*

*>>> > >
*

*>>> > > _______________________________________________
*

*>>> > > ncl-talk mailing list
*

*>>> > > List instructions, subscriber options, unsubscribe:
*

*>>> > > http://mailman.ucar.edu/mailman/listinfo/ncl-talk
*

*>>> > >
*

*>>>
*

*>>>
*

*>>> _______________________________________________
*

*>>> ncl-talk mailing list
*

*>>> List instructions, subscriber options, unsubscribe:
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*>>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
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*>>>
*

*>>
*

*>
*

*>
*

*>
*

*>
*

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*>
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Received on Thu Jan 24 07:18:45 2013

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