Setting line styles for graphs

[filip-jezek]

I have not found a way how to adjust style of the lines - i.e. thickness, color, markers. This should be forwarded to graph.js somehow. E.g. in a new tag graphstyle="json desc here" to avoid ton of bindable objects.

[TomasKulhanek]

colors are generated by algorithm blue,red,green,..., there is option to skip color index so start with red or green. Other settings are set to chartjs library https://www.chartjs.org v 2.9.4.

The 'chartjs' components avoids programming by giving predefined convention of expected chartjs behavior.
The asked feature request asks for freedom to user. Well, the user may use chartjs or plotly or other graph library directly - but all needs programming some code.

Regarding the line properties, it might be considered to allow specify the dataset property and pass it to chartjs library as documented in https://www.chartjs.org/docs/2.9.4/charts/line.html