Re: strange error

[Michael Vanier]

This works.  Thanks.

Mike

> From: Mats Bengtsson <address@hidden>
> 
> > This file:
> > 
> > % Begin lilypond file.
> > 
> > melodya = \notes \relative c'' {
> >         \stemUp
> >         d4 c4 b4 a4
> > }
> > 
> > 
> > melodyb = \notes \relative c' {
> >         \stemDown
> >         d2 b2
> > }
> > 
> > 
> > \score {
> >         \simultaneous {
> >             \context Staff = melodya <
> >                 \time 4/4;
> >                 \clef treble;
> >                 \melodya
> >                 \melodyb
> >             >
> >         }
> > 
> >         \paper {
> >             linewidth = 15.0\cm;
> >         }
> > }
> > 
> > % End lilypond file.
> > 
> > 
> > generates errors as follows:
> > 
> > test.ly:13:12: warning: Adding note head to incompatible stem (type = 4):
> >         d2 b
> >             2
> > 
> > test.ly:14:1: warning: Adding note head to incompatible stem (type = 4):
> > }
> > 
> > Lilypond seems to ignore the \stemUp directive.  This is using 1.3.120.  Is
> > there any way to force an upward-pointing stem?
> 
> This is actually a feature of Lilypond. What happens is that both
> \melodya and \melodyb are typeset as a single voice. Technically
> this means that they are typeset by a single Voice context.
> If you want to typeset them as two different voices with separate
> properties (such as stem directions), you have to create these
> contexts explicitly and give them separate names. The easiest
> is probably to change the \score declaration to (untested):
> 
> \score {
>             \context Staff = melodies <
>                 \time 4/4;
>                 \clef treble;
>                 \context Voice = melodya \melodya
>                 \context Voice = melodyb \melodyb
>             >
> 
>         \paper {
>             linewidth = 15.0\cm;
>         }
> }
> 
> I also removed the first \simultaneous declaration since you only
> have a single staff. 
> 
>    /Mats
> 
> 
>