Extracting symbol location

[Lukas Tuggener]

Dear All

To create labeled training data for a machine learning project, I need to extract the location at which symbols are printed. Is it possible to extract coordinates for every symbol? Methods which reveal the position of one symbol at a time would also already help a lot (e.g. control which symbol will be printed at the exact center)

I am aware that similar questions have been asked have been asked in the past. But those are pretty old, so I am hoping that there has been some development in this area.  (http://lists.gnu.org/archive/html/lilypond-user/2007-05/msg00142.html)

Thank you very much.

Regards

Lukas