Overlaying of charts

Question

I want to know whether this is possible using Google Charts API: First, create a bar chart with the given input data. And then overlay a line chart (or a line) on top of it.

My use case here, is to show a student's performance in a test when compared to the rest of the crowd which is already available as a bar chart.

EDIT: Dug and found out about markers. Will explore and may be answer my own question :)

Answer 1

This is covered pretty explicitly in the current documentation, see compound charts

Answer 2

Yes, markers are probably what you are looking for. In particular, you may wish to look at a newer feature called "financial markers". This (little advertised) feature was added recently.