Re: Odd layout choices

[Simon Albrecht]

Am 15.09.2014 um 21:41 schrieb Guy Stalnaker:
> All,
>
> Sometimes Lilypond changes how it does its "Fitting music on ..." 
> calculations when it decides what can fit on a page and what cannot. 
> In this case, after four pages on which the "fitting" process puts two 
> systems per page, the subsequent pages *all* have only one system per 
> page--even though there is no change in number of staves -- still 
> seven (SATB plus organ). The links below to the Lilypond code and 
> resulting PDF show what I mean. Now, I know I can fiddle with the 
> margins and likely get Lilypond to fit two systems per page 
> throughout, but this just seems so odd. Why can two seven-stave 
> systems work for four pages but not for all remaining pages?
Perhaps something requires more padding on the last systems?
> https://www.dropbox.com/s/cr26k3jlkxwg6s1/psalm46.pdf
Well, this doesn’t show what you describe, but two systems per page.
> https://www.dropbox.com/s/tjbf7sdudia6zpy/psalm46.ly
> https://www.dropbox.com/s/zqoxjruc80door8/psalm_46_organ.ly
> https://www.dropbox.com/s/gcugottr7fukoxv/nak_standard_header.ly
>
> Verbose logging provides no guidance as, well, there's technically 
> been no error. In order to get two systems per page through out, I 
> have to set-global-staff-size to 14 and decrease all margins thus:
>
>   top-margin = 1.0\in
>   bottom-margin = .75\in
>   right-margin = 1.0\in
>   left-margin = 1.0\in
>
> Which is, well, odd. To me at least.
Resolving this can be difficult in cases.
Try
\paper {
  min-systems-per-page = 2
  % or also
  % page-count = x
}
in order to force lily to do what you want. It might result in illicit 
compression, though. You’ll have to see.

HTH, Simon