add geom_hex support

[mikejiang]

No description provided.

[cpsievert]

plotlyjs doesn't natively support hexagonal binning, but maybe we could do some sort of hack with markers with symbol="hexagon"?

[cpsievert]

Closing in favor of #348

[maxheld83]

Browsing through the code, I just realised that this is in fact already implemented.
Sorry for being so dense.

m <- ggplot2::ggplot(faithful, aes(x = eruptions, y = waiting)) + geom_hex()
plotly::ggplotly(m)

Fantastic.

[cpsievert]

It is supported via ggplotly(), but not natively in plotly.js, so you're issue/request is worthwhile!

[maxheld83]

oh ok – thanks. I hadn't even thought that was possible that ggplotly() could do something that plotly couldn't.

[cpsievert]

plotly.js itself doesn't do hexagonal binning, but you can always do it with something else and pass the x/y data representing the hexagons to a scatter trace