error: can't open description file

[Caleb Schiff]

Grads users,

I'm new to Grads and I apologize for my, most likely, simple question.

I've received a line of commands to plot storm data, but I receive an
error for one of the first commands.

'open mask.ctl'

The error I receive is "Can't open description file"

I didn't think the file was a description file so don't understand why
I am running into problems.

Any help would be much appreciated.

Caleb Schiff
Senior Research Specialist
Department of Geology
Northern Arizona University
Building 12, Room 100
PO Box 4099
Flagstaff, AZ 86011-4099
928-523-0638 (Lab)
928-523-7290 (Fax)