[R] format of data for use in clim.pact

[isidora k]

Goodmorning everyone!
Just a quick question: 
I want to apply eof analysis and downscaling using the
clim.pact package.
What form should my data have? Only netCDF?
Right now my data are of the form of ascii files for
each month with 3 columns corresponding to latitude,
longitude and value of my observations.
Any idea on how to handle them would be welcome.
Thanks a lot
Isidora