[gradsusr] Help in showing the example of using maxloc()

[See Hai Ooi]

Dear Mr Charles Seman,

      Thank you.  In fact, the question of finding the location of maximum wind was posed by Sushant Puranik from Pune, India, in connection with my above enquiry.  Nevertheless, her question and your (+ Jeffrey Duda ) guidance are useful to me too.  In your example, may I know the purpose of "set lev 1000" ? Also, I have one question: the wind data are usually given in u- and v-components. For using the fndlvl to obtain the specific pressure level of the maximum wind, do we need to first convert the u- & v-wind components into something like 26010 ?

     Regards.

Ooi


--- On Fri, 19/3/10, Charles Seman <Charles.Seman at noaa.gov> wrote:

> From: Charles Seman <Charles.Seman at noaa.gov>
> Subject: Re: [gradsusr] Help in showing the example of using maxloc()
> To: "GrADS Users Forum" <gradsusr at gradsusr.org>
> Date: Friday, 19 March, 2010, 12:54 AM
> Ooi,
> 
> Please also see: http://grads.iges.org/grads/gadoc/gradfuncfndlvl.html
> 
> If you set for a horizontal (x,y) domain, you should get a field of  pressure levels, each value displayed in the 2D plot representing the  level of the maximum wind for that vertical column according to the search limits:
> 
> set x ... ...
> set y ... ...
> set lev 1000
> set t ...
> set gxout shaded
> d fndlvl(wind,max(wind,lev=700,lev=1000),lev=700,lev=1000)
> 
> Hope this helps,
> Chuck


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