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 :)
From stackoverflow
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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.
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