It appears that AnnotationChart does not support roles. I am trying to attach annotations to the join table to better represent my data (instead of 'A', 'B', ...).
For example, assume I have a timeline of active publications. Along with that I have a series of events that are one of Submit, Review, Approve. What I would like to show for annotation labels would be 'S1', 'R1', 'S2', 'A1', 'R2', 'A2'... -- You received this message because you are subscribed to the Google Groups "Google Chart API" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-chart-api+unsubscr...@googlegroups.com. To post to this group, send email to google-chart-api@googlegroups.com. Visit this group at https://groups.google.com/group/google-chart-api. For more options, visit https://groups.google.com/d/optout.
