Hi Hans,
On Sun, Oct 12, 2014 at 4:38 AM, Hans Sommer <[email protected]> wrote:
> Hello,
>
> I am relatively new to Lilypond.
> I try to check the total length of a SequentialMusic part, i.e.
>
>
> my_score_part = { c'4 d e f }
>
> I want to get the result 4 quarters (or any other numerical representation)
>
> and for
>
> my_score_part2 = { c'4 d e f g8}
>
(This isn't a valid name for a variable, so I changed it below.)
>
> should deliver 4 quarter and 1 eighth.
>
> I found in the documentation the property:
>
> length-callback (procedure):
>
> ly:music-sequence::cumulative-length-callback
>
>
> but I don't know how to use it.
>
> I would be very thankful, if anybody could provide an example.
>
>
I'm not familiar with this property, but it's relatively easy to determine
the length of a music expression. Try this:
\version "2.19.10"
my_score_part = { c'4 d e f }
my_score_part_two = { c'4 d e f g8 }
#(display (ly:music-length my_score_part))
#(display (ly:music-length my_score_part_two))
Hope this is helpful,
David
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