Re: griding of ASCII file

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

Hi Yogesh,
I don't have a complete answer but here are some thoughts
which may get you started.

You can use the FILE/FORM=DELIM command to read
your data into separate variables yr, mo, day, hr, min, sec, lat,
lon, ht, co2. If the first column Time refers to an  index 1, 2, 3
then you could ignore that.

There's an FAQ which might give you the help you need to
create axes from the time data.  It addressees how to make
a time axis, if your time points are ordered monotonically
http://www.ferret.noaa.gov/Ferret/FAQ/axes_and_data/time_axis_from_variables.html

Ferret has a set of functions which can put unordered points onto a
grid in 2 dimensions at a time, such as SCAT2GRIDGAUSS_ZT
and SCAT2GRIDGAUSS_XZ  but I'm not sure of a method for
scattered data in more dimensions than 2.  Perhaps you can create
a 2-dimensional grid in Z and either X or Y, if one of the X-Y
dimensions is relatively constant.

Ansley

Yogesh K. Tiwari wrote:

> Hello Ferret Users,
>
> I have an ASCII data file of the airplane observations from ground
> to 10,000 meters.
>
> The measurements are irregular, means heaight is not increasing
> with in data.
>
> The height is in meters and the time steps is irregular as well.
>
> Now I want to grid the data in which height should increase in
> vertical dimension and time steps should be daily(its two month
> observation) :
>
> I want to grid something like.
>
> Name   Title       I          J        K        L
> CO2    CO2       20:80    -170:-60  0:10000   1:60
>
>
> The colomns of the ASCII file is as :-
>
> Time, yr, mo, day, hr, min, sec, lat, lon, ht, co2
>
> Though it is only may and june month data of 2003.
>
>
> Many thanks for your help,
>
> Regsrds,
> Yogesh