I have a graph where the x axis (group data) is dates. There are 90 dates, so it gets a bit messy.... First of all, the dates are displayed horizontally, so everything is unreadable, since the dates are printed over each other. Is there a way to flip the labels on this axis to vertical?? And also, I don't need to display all 90 lables on this axis. Every 4th date label would do. Is there a way to achieve this???