Replace embedded png graphs with interactive html graphs

[vifactor]

http://gnuplot.sourceforge.net/demo_canvas_5.2/

[vifactor]

It looks like it is not worth to migrate to gnuplot's canvas terminal. The functionality out of the box is limited, e.g. for a plot with an inset only one pair of axis becomes interactive. For multiple plots on a page, a heavy java script coding is required.

Also it is not clear why to use jsdir option if required css and js files come with gnuplot's distribution, however, automatic detection of a path to these scripts is not provided. Workaround needed.

[vifactor]

one of the alternatives is pygal:

• very simple
• nice documentation
• generates embedded interactive plots

But:

• does not have zooming and panning
• does not allow inset plots

[vifactor]

Among other alternatives, Bokeh and altair are in active development. I would prefer Bokeh because of simple and clear procedure to embed its plots into html. Unfortunately, the later package does provide streamgraph plot out of the box, which looks natural for diplaying authors' contribution.
Should try to implement the functionalily using the recipe.

[pulkomandy]

I found echarts which looks nice and the syntax seems not too hard: https://echarts.apache.org/examples/en/editor.html?c=themeRiver-basic

I don't know how easy it is to integrate however

[vifactor]

Same here, not sure I will find time to work on it.

[pulkomandy]

Found yet another possible one: http://nvd3.org/index.html

Seems easy to integrate (it's all javascript), data input is just json which we could easily generate, and it has steam charts and a 'viewfinder' in its demos. Did not see an example of an inset plot, but I think we can do away with that if it's the only missing thing.

[vifactor]

thanks to @pulkomandy , this long-lasting issue is now resolved! Nvd3 is the js-library used to render graphs for repostat.