Re: Trivial (?) question re dynamics positioning

[Thomas Ruedas]

Hi again,
On Monday 05 December 2005 06:02, David Rogers wrote:
> On 4-Dec-05, at 6:42 PM, Thomas Ruedas wrote:
> > lately I have been wondering about how to position dynamics
> > commands (i.e. f, p, mf, etc.) so that they are exactly in the
> > middle between the two staves of a piano score.
> <http://lilypond.org/doc/v2.7/Documentation/user/lilypond/Piano-
> templates.html#Piano-templates>
thanks for the pointer, David; the example shows exactly what I want - 
the only problem is that it didn't work for me when I copied it (and 
commented out the pedal stuff, which I don't need here). The example 
in the form I tried is given at the end of this mail.
I use 2.6.3 and got the following error:
Interpreting music...
error: unknown translator: `Engraver_group'

If I comment the line \type "Engraver_group", I get the following even 
more confusing error:
Interpreting music... /usr/share/lilypond/2.6.3/ly/init.ly:8:3: In 
procedure symbol->string in expression (ly:parser-print-book parser 
(apply ly:make-book $defaultpaper ...)):
/usr/share/lilypond/2.6.3/ly/init.ly:8:3: Wrong type argument in 
position 1 (expecting SYMBOLP): ()

While I don't have the slightest clue what this means, I did not 
expect there to be a problem with the Engraver_group, because the 
example assumes v.2.6.0, i.e. more or less what I have.
What can I do about this?
Thomas

     \score {
       \context PianoStaff <<
         \context Staff = "upper" << \i >>
         \context Dynamics = dynamics \dynamics
         \context Staff= "lower" << \ii >>
%         \context Dynamics=pedal \pedal
       >>
       \layout {
         \context {
           \type "Engraver_group"
           \name Dynamics
           \alias Voice % So that \cresc works, for example.
           \consists "Output_property_engraver"
     
           \override VerticalAxisGroup #'minimum-Y-extent = #'(-1 . 1)
%           pedalSustainStrings = #'("Ped." "*Ped." "*")
%           pedalUnaCordaStrings = #'("una corda" "" "tre corde")
     
%           \consists "Piano_pedal_engraver"
           \consists "Script_engraver"
           \consists "Dynamic_engraver"
           \consists "Text_engraver"
     
           \override TextScript #'font-size = #2
           \override TextScript #'font-shape = #'italic
           \override DynamicText #'extra-offset = #'(0 . 2.5)
           \override Hairpin #'extra-offset = #'(0 . 2.5)
     
           \consists "Skip_event_swallow_translator"
     
           \consists "Axis_group_engraver"
         }
         \context {
           \PianoStaff
           \accepts Dynamics
           \override VerticalAlignment #'forced-distance = #7
         }
       }
     }
     \score {
       \context PianoStaff <<
         \context Staff=upper << \i \dynamics >>
         \context Staff=lower << \ii \dynamics >>
%         \context Dynamics=pedal \pedal
       >>
       \midi {
         \context {
           \type "Performer_group"
           \name Dynamics
%           \consists "Piano_pedal_performer"
         }
         \context {
           \PianoStaff
           \accepts Dynamics
         }
        \tempo 4 = 90
       }
     }

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