Re: function looksSlower from LSR produces many warnings

[Marc Mouries]

On Jan 11, 2011, at 6:34 PM, Carl Sorensen wrote:

> On 1/11/11 11:30 AM, "Marc M" <address@hidden> wrote:
> 
>> As a matter of fact, I get the same warnings without the function but with
>> \stemUp with the code:
>> \version "2.13.45"
>> \language "english"
>> \score {
>>  \relative g' {
>>    << { \stemUp g, }
>>    \\ { \stemUp d' }
>>    \\ { \stemUp b' }
>>    \\ { \stemUp g' } >>
>>  }
>> }
>> 
>> Not clear why because the music looks ok.
> 
> Because you have four different voices that are all trying to share the same
> space.  This means they collide.  In this particular instance, the collision
> is not a problem; it's the desired behavior.
>> 
>> it's also not clear why \stemUp is necessary with voices while the stems are
>> in the right direction when we just print a chord:
>> \version "2.13.45"
>> \language "english"
>> \score {
>>  \relative g' {
>>    <g, d' b' g'>4
>>  }
>> }
> 
> Because the chord is in a single voice, which has a given stem direction.
> 
> When you do the parallel music, instead of the chord, you create *four*
> voices.  And normally we like to distinguish between voices, so we want the
> stems to be different.

This might be true for Choral music where the voice are played by different 
player or singer but that's not the case for Violin.
This is how all editions print Bach's Solo Sonata for Violin.

> 
> Please see the Learning Manual, section 3.2.1, for more explanation on this
> subject.  You really need to understand this concept to use LilyPond
> effectively for complex music.

Thanks for the link but I have read this section of the doc.  I find all of 
this tuning is needed because lilypond does not support writing chords with 
notes of different duration.
If this was supported music complex music like the solo sonatas would be much 
simpler to typeset.
I like lilypond and at the beginning I recommended it to other violinists but 
they found it was too developer oriented. Which, on my side i like the power of 
function that can be applied but I find myself spending more and more (too 
much) time to adjust lilypond layout. This might be because i am typesetting 
more complex music now but i'd like for lilypond to have a more approachable 
and more intuitive notation. Typesetting music for one instrument with 
different voice is definitely not only a to lay music out nicely but also to 
edit the lilypond code due to the multiple voices required just to enter few 
"chords" here and there. 



> 
> HTH,
> 
> Carl
>