Hello...
I have tried quite a few hacks, but nothing really suitable.
What I really want is to simple draw a line beneath the staff that has a
grey scale gradient such that for each note, I give a target value.
Most of what I have tried involves doing this in increments with
overlapping spanners, I also tried the code in this thread:
https://lists.nongnu.org/archive/html/lilypond-user/2016-10/msg00097.html
I think the answer is doing this with svg directives since in the svg
documentation there are directives for linear gradients, but I do not
know how to build the function to use svg directives and such that the
target greyscale value is reached at the x-position of a given notehead.
Also, ideally I would be able to use spacer rests to give intermediary
values along the way, since the curve is actually not linear.
Thanks in advance and my apologies if I have been unclear.
Best,
Michael
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