[gradsusr] Max Function with user defined fields?

[Jeff Duda]

L.B.,
Is your SigTor parameter defined as a time varying field? If not, then
that's why the max() function isn't working the way you want.

Jeff

On Fri, May 6, 2016 at 11:12 AM, L.B. <bcbass2989 at gmail.com> wrote:

> I'm not sure if I have my dimension settings wrong or if the max function
> is not capable of calculating the max of user defined fields. Take for
> instance the significant tornado parameter:
> 'define stp = cterm*ltermA*hterm*stermA'
>
> To get the max function to work correctly, I cannot just do
> max(stp,t=1,t=24), I have to expand out each of the terms in that stp
> algorithm down to the actual fields available in the model data such as
> CAPEsfc for instance.
>
> I have a new script that I created that does some if statements and such
> that simply cannot be broken down into one single line or their individual
> fields from the model data and thus, I cannot get the max function to work.
> It only will calculate one timestep.
>
> I have tried setting t to vary, such as set t 1 24, etc but nothing works.
> Is there a way around this, or am I missing something?
>
> Here is a snippet of the code that I am trying to work with:
>
> ...
>
>     if ('hgtprs(z=botzlev)' <= hgt0c)
>     'wt=0'
>     endif
>     if ('hgtdiffZero' > 0 & 'hgtdiffTop' < 0)
>     'wt=hgtdiffZero/(HGTtop0C-HGT0C)'
>     endif
>     if ('hgtdiffTop' >= 0)
>     'wt=1'
>     endif
>     nextZlev = botzlev+1
>     'define levDiff = hgtprs(z='nextZlev')-hgtprs(z='botzlev')'
>     'hailsum=hailsum+(wt*E*levDiff)'
>
>     botzlev = botzlev + inc
>     endwhile
>
>   'set gxout shaded'
>   'SHI=hailsum*0.1'
>   'MEHS=0.1*(2.54*pow(SHI,0.5))'
> endif
>
> 'define hs = max(smth9(MEHS/2.54),t=1,t=24)'
>
> *-------*
> William (L.B.) LaForce IV
> Meteorologist
> www.tornadoinsanity.com
>
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>
>


-- 
Jeff Duda
Graduate research assistant
University of Oklahoma School of Meteorology
Center for Analysis and Prediction of Storms
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