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Re: pseudo-variables



Hi Ufuk,
You first need to tell Ferret which data the pseudo-variable is
to be taken from, with I[GX=var].  Then if you try to use the @MAX
transformation to see its maximum, you will see an error message
and a suggestion about how to get the maximum.

   yes? use coads_climatology
   yes? LIST I[GX=sst, I=@MAX]
    **ERROR: command syntax: cannot transform pseudo-variables: I=@MAX
             use DEFINE VARIABLE (e.g. DEF VAR ii=i) and transform that

Define a new variable to be the pseudo-variable for the data.  Now
you can list its max.

   yes? LET ii = I[GX=sst]
   yes? LIST ii[I=@MAX]
             VARIABLE : I[GX=SST]
             DATA SET : COADS Monthly Climatology (1946-1989)
             FILENAME : coads_climatology.des
             FILEPATH : /home/ja9/tmap/fer_dsets/descr/
             LONGITUDE: 20E to 20E(380) (maximum)
          180.0



Ufuk Utku Turuncoglu wrote:

> Hi,
>
> How can i find max and min value of pseudo-variables (I, J, K, and L) from an
> data set.
>
> best regards,
>
> -------------------------------------------------
> This mail sent through IMP: http://webmail.students.itu.edu.tr/





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