Add flot plugin Candlestick with dependent library

[ilgizar]

To fix #516 need add the necessary plugin. Some examples of the work of the new panel plugin:



In this PR the panel plugin is not present, it while in development. It will be a separately installed plugin. But for his work, these changes are necessary.

[codecov-io]

Codecov Report

Merging #10955 into master will not change coverage.
The diff coverage is n/a.

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[JamesGalt]

Hi,
I really would like to have candlesticks.
Will you make your plugin draw also classic graph (like the graph plugin) so we can draw BBands or EMA over the candlesticks?
Would be amazing
Thanks

[ilgizar]

@JamesGalt The implementation of analytical charts is complicated by the principle of obtaining data. For the construction of indicators, data for previous periods are needed, as long as there is no such possibility.

[JamesGalt]

@ilgizar I'm not talking about adding analytical charts directly, as I can compute them, just adding the possibility to draw line graphs so I can display them.
Perhaps by making the first metric returning OHLC+Volume used for candles and others displayed as lines.
A mix between your screenshot and the one below would be crazy ;)

Thanks

[ilgizar]

@JamesGalt Draw metrics from external sources - not a problem.

[JamesGalt]

Nice,
Will be amazing!
Thanks!

[ilgizar]

@JamesGalt like this?

[JamesGalt]

@ilgizar Perfect!
You're the man, waiting for this feature for almost a year now!
If you need a beta tester I'm in!
Should volume have an histogram option?

[ilgizar]

@JamesGalt Thanx.
How do you imagine overlaying a histogram on a time series? Grafana natively does not yet support the second x-axis.
PS: although in my plugin I can add one more x-axis (to top or bottom).

[JamesGalt]

@ilgizar Sorry, by histogram I was meaning bar view.
But histogram can be an idea for price repartition. Not sure how useful id would be.
Again, Thanks!

[ilgizar]

I moved flot candlestick plugin inside to panel grafana plugin.
@JamesGalt beta version was placed here https://github.com/ilgizar/ilgizar-candlestick-panel/raw/master/pack/ilgizar-candlestick-panel.zip

[JamesGalt]

@ilgizar Brillant!
First impressions:
I dont know why but boxes are two wide
see screenshot

which version of grafana are you using? thanks