After further investigation, I see 3 blocking issues which impact the readability of the chart by following our design.
After looking into the source code, only one can be resolved within limited time, it is quite time consuming to read code and fix the other 2.
I opened 3 issues to the chartJS community.
    https://github.com/nnnick/Chart.js/issues/881
    https://github.com/nnnick/Chart.js/issues/892
    https://github.com/nnnick/Chart.js/issues/893

To guarantee the accomplishment of widgets work on schedule within this week, I will switch to explore re-using those existing kimchi line chart code.

On 1/23/2015 6:35 PM, Yu Xin Huo wrote:

I got such a chart built today, Seems like there are bugs, I will do further investigation.

On 1/21/2015 5:47 PM, Yu Xin Huo wrote:
Team,

I investigated javascript chart library below, from my perspective, the first 3 are ok for kimchi to leverage.
I tend to take the chart.js(http://www.chartjs.org) which is light-weight, highly customizable, support responsiveness.

Please take a look and share your thoughts from any perspective.

I will go ahead to prototype with chart.js tomorrow to see how close to those charts in new UI design I can customize it.

chart.js(http://www.chartjs.org)
jqPlot(http://www.jqplot.com/)
flot(http://www.flotcharts.org/)

ExtJS(http://www.sencha.com/products/extjs/)
    whole js framework, do not fit into kimchi, license is not ok
highcharts(http://www.highcharts.com/)
    license is not ok
jsCharts(http://www.jscharts.com/)
    license is not ok
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