Hi,
> But now i want my script to take the values from a text file which contains
> the ascii values of the specifications (like lat, lon, time, level and
> so).
In that case, I suggest you consult the Ferret manual about reading
ascii data. And then:
!--- Read your ASCII file ---
file/var="Kval,Lval, . . ."/ . . . your-ascii-file.txt
!-- Plot ---
fill/L=`Lval[i=1,d=1]`/K=`Kval[i=1,d=1]`/ . . . .
Ryo