Re: invisible noteheads

[Donald J. Stewart]

oops, that's embarassing...

I agree. The Hide directive seems to be randomly selective in what is 
'hidden'. I found this problem when comparing the hide NoteHead (capital H !) 
to the other directive.

The Hide NoteHead command also correctly spaced the given note within the 
score.

On Wednesday, September 6, 2023 1:32:07 AM PDT Richard Shann wrote:
> On Tue, 2023-09-05 at 09:50 -0700, Donald J. Stewart wrote:
> > https://lilypond.org/doc/v2.24/Documentation/notation/expressive-marks-as-> 
> > > lines
> Ah, right, that explains it - in your email you suggested
> 
> \once \hide Notehead
> 
> which doesn't work, it has to be NoteHead.
> 
> You can insert this syntax using the command:
> 
> Command: Insert Lilypond
> Insert or edit a directive in the LilyPond music typesetting language.
> This can be used for extra spacing, transposing or almost anything. See
> LilyPond documentation for ideas.
> Location: Object Menu ▶ Directives
> Internal Name: InsertStandaloneDirective
> 
> To have it readily available you could double click on the directive
> and start the Object Editor and choose "Create Button for Clone" which
> would give you a button in a palette for inserting it in future.
> However it would be much better if it were *not* a standalone directive
> but rather attached to the note.
> 
> To do that use the command:
> 
> Command: Attach/Edit LilyPond to Note
> Inserts LilyPond syntax you give before and after the note at the
> cursor height, also allows editing/deleting.
> Location: Object Menu ▶ Notes/Rests ▶ Directives
> Internal Name: InsertNoteDirective
> 
> and put
> 
> \once \hide Notehead
> 
> before the note. Then as before you can create a button to insert this
> syntax.
> 
> Which brings us to the starting point, the command
> 
> Command: (Print) Hide Object
> Hides the object at cursor position with a lilypond directive.
> Currently only Notes and the three Signatures. No rests!
> Location: Object Menu ▶ Directives ▶ Typesetter
> Internal Name: Hide
> 
> This command was not doing what its Help says it does. Looking at the
> history of it in the repository it seems something is corrupted. I've
> restored it to what I suspect was the original script. It now does do
> what it says (although hiding a note is limited to hiding the notehead
> and not the stem). This was clearly an unfinished project, to create a
> command that would hide any type of LilyPond object. As such I think it
> was misguided, not least because the directive created is closely
> linked to the object that follows it and can't be moved elsewhere with
> any reliable result.
> 
> I think it should be retired.
> 
> HTH
> 
> Richard
> 
> > I found the command under 'Adding timing marks to long glissandi'.
> > 
> > I've been applying small changes to an example that I previously
> > submitted. I've tested these changes both in Denemo and Frescobaldi.
> > 
> > One thing to note in Denemo, is that changes made in the 'Advanced'
> > tab under Object editor seem to work better than attempts to change
> > it in the Lilypond Text Editor.
> > 
> >  \once\hide NoteHead also creates the proper spacing for 'hidden'
> > noteheads.
> > 
> > I've attached the small Denemo example before and after changing the
> > \once\hide\NoteHead command
> > 
> > On Tuesday, September 5, 2023 12:56:12 AM PDT Richard Shann wrote:
> > > On Mon, 2023-09-04 at 16:35 -0700, Donald J. Stewart wrote:
> > > > I just discovered (late to the party as usual) the Lilypond
> > > > directive:
> > > > 
> > > > \once \hide Notehead
> > > 
> > > Can you give the URL of the location in the lilypond documentation
> > > where you found this syntax? If you simply insert this before a
> > > note
> > > you get an error message from LilyPond.
> > > 
> > > Richard