date format in tooltip of ggplotly

Question

I am using ggplotly to show an interactive time-series plot. The x axis is in date format, yet the hover tool tip in plotly is converting the date format to a numeric (scre

Answer 1

If you use just text in your tooltip, you can render a more complex tooltip by using the text element you pass to ggplot. You just need to call as.Date and use some
html tags as follows:

# draw the line plot using ggplot
gg <-ggplot(plotbycity, aes(x = date, y = rent, group = city, color = city,
    text = paste('Rent ($):', rent,
                 '
Date: ', as.Date(date),
                 '
Obs: ', count))) +
    geom_line() +
    ggtitle("Monthly Rents")

p <- ggplotly(gg, tooltip = c("text"))

Hope that helps!