Re: [ferret_users] local minima and maxima computation

[Steve Hankin <steven.c.hankin@xxxxxxxx>]

See @LOC transformation:
http://ferret.pmel.noaa.gov/Ferret/documentation/users-guide/variables-xpressions/XPRESSIONS#_VPINDEXENTRY_528

On 4/27/2013 1:55 AM, Gopal Mondal wrote:

Dear all

            I am facing same type of problem. Suppose sal, temp, chlorofil, all three parameters are varying with time. Time is in X axis . How can I extract the value of temp and sal for max chlorofil from the data file.Pls help me any one. Thank s to everybody.

Gopal Mondal

On Fri, Apr 26, 2013 at 6:54 PM, Andre Paim <paim.oceano@xxxxxxxxx> wrote:

Dear Nagarjuna,

I am not sure if I understood exactly what you want, but have you tried the @min and @max?

If you want to find the min and max at each point along a time series, all you have to do is:

(Assuming your variable is the temperature)

let temp_max = temperature[L=@max]

let temp_min = temperature[L=@min]

In the same fashion, if you want to find the min and max along the depth, all you have to do is substitute the "L" for "K", and so on.

let temp_max = temperature[K=@max]

let temp_min = temperature[K=@min]

Was that your question?

Regards,

André Paim

On 26 April 2013 04:01, Nagarjuna Rao <dnrao.au@xxxxxxxxx> wrote:

Dear All,

  Does ferret has any function to compute the relative minima and maxima's of a variable at each grid.

Thanks in advance for any help,

D.Nagarjuna Rao.