need help generating graph

[Anirban Bhattacharya]

I created a simple server log monitoring where with watchFile i am.capturingbany change in log file and with a fike stream I am reading number of lines. Then sending that count to monitoring html using socket.

Detail logic and code and git link is in one of my below post.

https://www.linkedin.com/pulse/node-utility-server-log-monitoring-runtime-anirban-bhattacharya

I need help I want to display hit and error as graph timewise on monitoring page.

I know with watchFile we can capture mtime I am sending that too in my json message to client but need to know best way to generate graph.

Any help will be great.