Re: queries about data reading

[Lev Tarasoff <lev@xxxxxxxxxxxxxxxxxxxxxxxxxx>]

Sachin,
	all this info is in the online documentation, but 
since you are a new user, you might want to make some notes
and examples of getting started. Ferret has a relatively short
learning-curve, but it's still there:

Anyway, concerning contour levels, 

try for instance
contour  /level="(0,5,1)(10,50,10)" v1
there are a number of different ways of specifying the levels,
check the documents

as for multiple data files, ferret defaults to the last opened file,
but you can specify other files as follows

say you want a variable to be the difference between v1 from file1
and v2 from file2:
let diff=v1[d=file1]-v2[d=file2]
but the data have to be on the same grid, if they are not, choose
a common grid, say g2 then go
let diff=v1[d=file1, g=g2]-v2[d=file2, g=g2]

cheers


Lev Tarasoff -  Dept of Physics, University of Toronto,
                60 St. George St., Toronto, Ontario, CANADA, M5S 1A7
                Tel (416)-946-3019  Fax (416)-978-8905
                email: lev@atmosp.physics.utoronto.ca

On Sat, 10 Nov 2001, [iso-8859-1] Sachin Bhandare wrote:

> 
> Hi ferret users,
> 
>  Our data contains 52 columns and 8760 rows in ASCII format.the filename is try.dat.Now we are giving following commands
> 
> yes?define axis/x=1:52:1 x10
> 
> yes?define axis/y=1:8760:1
> 
> yes?define grid/x=x10/y=y10 g10
> 
> yes?file/var=v1/columns=52/grid=g10 try.dat
> 
> yes?contour v1
> 
> we have got contours but the range is from 1 to 52.But we want to change it.Data is not in regular interval.tell us to define x-axis scales.X is vary from 0.04 to 352.
> 
> Also we have saved the x-axis file in another file called x40.dat.While our other file try.dat is data file.We want to use both files for contour plotting .we don't know how to handle multiple files for multiple variables.Does any one know about our problem.Please convey us .
> 
> regards,
> 
> sachin
> 
> 
> 
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