[gradsusr] Min max from defined variable

[Pascal Grandjean - F5LEN]

Thank you Davide,
I will try this way.

Pascal

Le 06/11/2012 17:29, Davide Sacchetti a écrit :
> if it can help:
> 'set lev 950 850'
> 'define N=(77.6/T)*(lev+4810*(e/T))'
> now N is defined on your levels
>
> bye bye
> Davide
>
> On Tue, 2012-11-06 at 16:55 +0100, Pascal Grandjean - F5LEN wrote:
>> Dear All,
>> I'm using a script to compute and mapping refractive index
>> for 4 layers from 950mb to 850 mb.
>> Variables rh, tmp... used for calculation come from GFS model.
>> In my script I have:
>> 'define N1=(77.6/T)*(lev+4810*(e/T))'
>> So I have 4 defined variables N1, N2, N3 and N4.
>> I can map N1, N2... but with this type of variable
>> I can't extract max or min values directly with a z variation.
>> How can I proceed to mapping max or min?
>> Is it possible to make a new grid file with a new variable
>> N with 4 levels?
>>
>> Thanks for any help.
>>
>> Regards,
>>
>> Pascal
>>
>>
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>