Re: relative frequency of a variable

[Ansley Manke <ansley.b.manke@xxxxxxxx>]

Hi Vincent,
There's a script frequency_histogram2.jnl  which works on 1-D data.  If you
want to treat your 2-D data as one big list of values and compute the 
frequency
for all of them, you can use the function xsequence to do that, and then 
call the
frequency histogram script.  To do this on the surface temperatures from
levitus_climatology,

  yes? use levitus_climatology
  yes? let var = xsequence(temp[k=1])
  yes? go frequency_histogram2  var -2 30 2

compare with

  yes? let var = xsequence(temp[k=1, y=40S:40N)
  yes? go frequency_histogram2  var -2 30 2

You could make your own version of the script to divide the histogram 
magnitude
by the total number of values to get relative frequency.

Ansley


Vincent Le Fouest wrote:

> Dear users,
>
> I have a 2D field (Lon/Lat) and I would like to verify if my variable
> (VAR) follows a normal distribution, i.e, I would like to obtain a plot
> with the relative frequency on Y and the VAR data on X.
>
> Did somebody already try it?
>
> Thanks in advance,
>
> Vincent 
>
>