geom_rect missing when converting ggplot2 to ggplotly

Question

I'm trying to put together a ggplotly graph with three elements (geom_point, geom_line, and geom_rect) and it looks fine in ggplot2. However, when I convert to ggplotly, the geom_rect disappears. I'm thinking it's something with the inherit.aes function?

The code to build the test data is below.

library(ggplot2)
library(plotly)

dates_seq = seq.Date(as.Date("2019-03-13"), as.Date("2019-04-21"), by = "1 day")
df = data.frame(ds = dates_seq,
                y = rnorm(length(dates_seq), mean = 50, sd = 5),
                yhat = rnorm(length(dates_seq), mean = 50, sd = 5)
                )
df$yhat_lower = df$yhat - 5
df$yhat_upper = df$yhat + 5

gg <- ggplot(df, aes(x = ds, y = y)) +
    labs(x = 'Date', y = 'Sales') +
      geom_ribbon(aes(ymin = yhat_lower, ymax = yhat_upper), fill = 'blue',
                  alpha = 0.2,
                  na.rm = TRUE)

start_date = as.Date("2019-04-19")
gg <- gg +
  geom_point(na.rm=TRUE) +
  geom_vline(xintercept = as.numeric(as.Date(start_date - lubridate::days(1))), linetype = 2, color = "black") +
  geom_line(aes(y = yhat), color = 'blue',
            na.rm = TRUE) +
  theme_classic()

promo_df = data.frame(xmin = c("2019-03-15", "2019-04-01"), xmax = c("2019-03-18", "2019-04-08"),
                          ymin = -Inf, ymax = Inf, Promo = "Yes")
promo_df$id = 1:nrow(promo_df)
gg = gg +
  geom_rect(data=promo_df, inherit.aes=FALSE,
            aes(xmin=as.Date(xmin),
                xmax=as.Date(xmax),
                ymin=ymin,ymax=ymax,
                group=id, fill = factor(Promo)), alpha=0.2) +
  scale_fill_discrete(name = "On Promo?")

The ggplot image shows the desired output with the geom_rect.

gg

And now the ggplotly version:

ggplotly(gg)

Is there any way to get the ggplotly image to look like the basic ggplot2 chart?

I just ran into the same problem you did - it appears to originate from the fact that ggplotly doesn't support ymin = -Inf and ymax = Inf. I haven't figured out a workaround yet, but will post an answer if I do! — Clara
– Clara, Commented Jul 1, 2019 at 6:33

Eli · Accepted Answer · 2020-03-13 18:01:49Z

3

Clara is right with respect to ggplotly's inability to support the ymin/max parameters. The best work around is to just manually set the parameters equal to the scale of your previous (main) layer. So in this case, it would be equal to 0/65.

answered Mar 13, 2020 at 18:01

Eli

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