group should not create multiple traces

[cpsievert]

The group argument in plot_ly() should probably be translated the same way as ggplot2's group aesthetic.

Among other things, this would make it easier to create candlestick charts requested in #351

[pstoyanov]

I don't know if you are referring to the same issue but it seems that color and symbol create a new trace too, which is very different from ggplot. ggplotly lumps color and symbol together to form a new aesthetic. I asked a question on SO about it: http://stackoverflow.com/questions/34582584/how-to-simultaneously-apply-color-shape-size-in-a-scatter-plot

Don't know if this is intentional, I am still very new to plotly.

[alyst]

+1: looks like group overrides color argument

[alyst]

@cpsievert I would like to fix this, but at the moment I don't have a good understanding of R plotly and plotly.js internals. It looks like the colors are not assigned in traceify(); does it at all happen in R or in plotply.js? Could you please give me some clues where to look? TIA!

[cpsievert]

Closed via d2bf2a1.