Facets with background colour in Plotly

Question

I'm trying to plot a small multiples graph of sparklines such that the background of each sparkline is coloured according to a variable (var4). I can do this with ggplot in R, but it's not converting well to Plotly.

ggplot(data, aes(x=var1, y=var2, group=var3, text=var3)) +
      geom_rect(data = data, aes(xmin = -Inf, xmax = Inf, ymin = -Inf, ymax = Inf, fill = var4), alpha = 0.4) +
      geom_line() +
      scale_fill_gradient2(low = "red", mid = "white", high = "red", midpoint = 0, space = "rgb", na.value = "grey50", guide = "colourbar") + 
      facet_wrap(~ var3, ncol = 44, scales = "fixed")

I've thought about maybe doing a "histogram" in Plotly, overlaid with my sparklines, but I can't quite figure that out either.

Any thoughts are appreciated.

Answer 1

geom_rect is not supported (yet) in ggplotly.