Ignoring Land in an EOF analysis of SST

[<gendasza@xxxxxxxxxxxx>]

Hi,
I'm working to create an EOF analysis in Ferret, but I'm having trouble
hiding the land values from the eof_space function. My land values are set
to missing_value and are ordinarily masked in other Ferret plots, but as
soon as I perform an EOF analysis on a portion of my data including land 
and create a nc file from the eof_space function, there is no data in that
file. Any help would be greatly appreciated.
Thanks,
Andrew Gendaszek