[ferret_users] creating a natCdf

[Timothée Brochier <timbrochier@xxxxxxx>]

hello,
I trying to put a large amout of data from oceanographics cruises in a 
netCdf format,

I followed the steps explained in ferret documentation, creating a .cdl 
file, transforming it to a .cdf with ncgen, and fill it with th datas 
using a fortran progran, but it doesn't work, I think because I didn't 
well understood how the time axis works...

my datas are in the form :
I put date in number of months since janury 1901 .
there is no regular time step, sometimes theres is 3 months without 
data, ...

date lon lat data1 data2 .... ....

 848 -80.55 -7.1333333 50 16.1 -999 -999 9 11 2 0 0 0 0 0
 848 -80.983333 -7.2 50 16.8 -999 -999 7 3 22 0 0 0 0 0
 848 -81.333333 -7.3666666 50 17.9 -999 -999 4 12 3 0 0 0 0 0
 848 -81.333333 -7 50 16.4 -999 -999 3 11 33 0 0 0 0 0
 848 -81.366666 -6.6166666 50 16.7 -999 -999 12 0 10 0 0 0 0 0
 848 -82 -7.0666666 50 18.2 -999 -999 10 3 3 0 0 0 0 0
 848 -82.883333 -5.6333333 50 17.5 -999 -999 75 0 0 0 0 0 0 0
 848 -83.333333 -4 50 16.6 -999 -999 12 0 4 0 0 0 0 0
 848 -82.5 -4 50 16.5 -999 -999 1 7 0 0 0 0 0 0
 850
...

does anybody could explain me how to do to writes it in a cdf format?
Thanks
Timothee B.