open
open filename
Opens filename
, which should be the name of a
grads data descriptor file, also called a control file.
Usage Notes
-
The standard file extension for grads data descriptor files is
.ctl
. Provided you adhere to this standard, there is no need to type the extension.ctl
when issuing theopen
command.
-
You will need to open at least one data-descriptor file before you can enter other grads commands.
- You can open more than one data-descriptor file. Each file is numbered according to the order in which it was opened.
Examples
open jandata.1966
open jandata.1966.ctl
Both of these commands will have the same effect -- opening the grads
data descriptor file "jandata.1966.ctl"
.