[R] Plot_ly bar plots - bars span sevral x values when there are missing values.

[Rasmus Liland]

Dear Nevil,

Although I am a bit unfamiliar with 
plotly, it seems it is possible to plot 
two bars side by side at least:

	h <- df[3:4,]
	p <- plotly::plot_ly(
	  data = h,
	  x =  ~ x,
	  y =  ~ y,
	  type = "bar")
	p <- plotly::layout(p=p,
	  xaxis = list(range = c(0,20)),
	  title = "example 4 two bars side by side")
	plotly::orca(p=p, file="amos4.png")

Thus, if you want to only plot x=3 and 
x=11 you need to set y=0 when x=4:10:

	h <- df[c(3, 11),]
	h <- rbind(h, cbind(x=4:10, y=0))
	p <- plotly::plot_ly(
	  data = h,
	  x =  ~ x,
	  y =  ~ y,
	  type = "bar")
	p <- plotly::layout(p=p,
	  xaxis = list(range = c(0,20)),
	  title = "example 2 corrected")
	plotly::orca(p=p, file="amos2.png")

I think this has to do with the xaxis 
option in plotly::layout there, and not 
with the bar width.

Best,
Rasmus

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