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Viewing reputation changes on Stack Overflow produces a nice graph which can be 'zoomed in' on to view more detailed reputation changes, for example. Is this using a library or is it custom written? If it's a library, which is it?

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migrated from Mar 21 '13 at 9:34

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Looks like highcharts on the reputation tab - – Oliver Mar 21 '13 at 8:47
@Oliver: <s>have you tried to compare layout? They look slightly similar indeed, but the implementations are cardinally different. Highchart's one is svg-based, and SO's is pure html</s>. Oh wow, I haven't seen reputation page yet before :-S sorry, I was wrong – zerkms Mar 21 '13 at 8:47
@zerkms The rep graph does use SVG elements, so you're partly right there. – Asad Saeeduddin Mar 21 '13 at 9:43

Looks like highcharts because inspecting the DOM reveals stuff such as:

<svg ...>
  <clipPath id="highcharts-1">
  <g class="highcharts-grid" zIndex="1">
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There are actually 2 reputation graphs,

I think the one you are referring is the the graph in reputation tab. The graph in reputation tab is rendered using highcharts in fact it is a master-detail type of chart.

While coming to the other one in the summary tab, its a html graph not a highcharts one.

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True, the small graph appears to be totally static, created on the server side. – Shadow Wizard Jan 9 '14 at 7:52

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