[Gretl-users] Conversion from a Formula to a Description

[Allin Cottrell]

On Sun, 30 Mar 2008, Thomas La Bone wrote:

> In the Gretl GUI one can define a new variable by ADD -> DEFINE NEW VARIABLE.
> This works quite nicely, and I can define something like y=cos(2*pi*x/5) and
> use it in a regression. In addition, I can right-click on y, select EDIT
> ATTRIBUTES, and edit the formula, changing it to y=cos(2*pi*x/10) for example.
> In general, this is a very useful feature of Gretl.
> 
> However, if I save the file and reload it the "formula" becomes a
> "description" in the EDIT ATTRIBUTES window. This means I can no longer edit
> the formula. Is there a way to retain the ability to edit the formula after
> saving a session?

No, the variable then becomes part of your dataset.  But you can 
easily redefine the variable if you want, by doing Add/Define new 
variable and re-using the old name.

Allin Cottrell.