Re: Scaling durations

[Mats Bengtsson]

Paul Scott wrote:

> Deacon Geoffrey Horton wrote:
>
> > I'm not looking at triplets (or tuplets) here. I've got a piece
> > entered in 4/2 time, and I'd like to convert it to 4/4 without going
> > through and manually altering all the durations. If the manual says
> > how to do this, I must not have looked in the right place.
> >
> > Is there a way to do this, or am I stuck re-entering the durations?
> >   
>
> That would not be something I would expect LilyPond to do.  I sounds 
> like a job for some kind of script or just the replace function of 
> whatever editor you are using.  First replace all of the smallest 
> duration (32, 16, 8, etc.) with half of that duration and then do it 
> for the duration twice that long, etc.

One solution was posted today, see
http://lists.gnu.org/archive/html/lilypond-user/2007-12/msg00171.html

In contrast to Paul, I definitely think this is something that
is highly relevant to do within LilyPond. Consider for example
typesetting of medieval music that often used 4/2 or 3/2 notation
(even though they used different nomenclature at that time) and
you want to typeset two versions of the piece, one with the
original notation and one with modern typesetting practice
and all durations scaled down to 4/4 or 3/4.

   /Mats