Re: CLEAR TRANSFORMATIONS ?

[Ben Pfaff]

John Darrington <address@hidden> writes:

> On Sat, Jun 30, 2007 at 07:55:27AM -0700, Ben Pfaff wrote:
>      John Darrington <address@hidden> writes:
>      
>      > We currently don't implement the CLEAR TRANSFORMATIONS command.
>      >
>      > To me it would appear trivial to do so.  Is there subtle thing that
>      > I've overlooked?  If not I'll go ahead and implement it.
>      
>      There are a few subtleties I think.  First, I don't think we save
>      a copy of the dictionary that corresponds to the active file.
>      We'd need to do so, and then restore it for CLEAR
>      TRANSFORMATIONS.
>      
>      Second, some transformations are not exposed to the user and
>      should not be cleared.  The specific one I have in mind is the
>      DESCRIPTIVES transformation that produces Z scores.  As far as
>      the user is concerned that transformation doesn't exist so it
>      shouldn't be cleared.
>      
> Maybe I'd better leave it alone for now.

I had the same conclusion each time I've looked at it too.  Too
much trouble, too little benefit.
-- 
"Writing is easy.
 All you do is sit in front of a typewriter and open a vein."
--Walter Smith