plotly / plotly/plotly.R

ggplotly doesn't display geom_rect with ymin = -Inf and ymax = Inf

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bug ggplotly
Dominant language
R
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Description

In ggplot::geom_rect(), one can specify the aesthetics ymin = -Inf and ymax = Inf, which will draw the rectangles to the limit of the plotting area. Apparently, ggplotly does not support this behaviour, and will fail to display the rectangles when a ggplot object with such a geom_rect is passed.

Motivation This behaviour of geom_rect is especially useful for indicating time periods of interest when plotting time series. Workarounds such as manually specifying the ymin and ymax limits to mimic the behaviour are much less effective: it can be difficult to know in advance what those limits should be, and they are affected by expand settings in the scale specification.

# Plot definition
example_plot = economics %>%
  ggplot() +
  geom_line(aes(x = date, y = psavert)) +
  geom_rect(data = data.frame(xmin = seq(as.Date('1970-01-01'),
                                         as.Date('2010-01-01'),
                                         '10 years'),
                              xmax = seq(as.Date('1975-01-01'),
                                         as.Date('2015-01-01'),
                                         '10 years'),
                              ymin = -Inf, ymax = Inf),
            aes(xmin = xmin, xmax = xmax, ymin = ymin, ymax = ymax))
# Base ggplot object
example_plot

image

# Calling ggplotly
example_plot %>% ggplotly()

image

Note ggplotly image above captured using 'export' function on Viewer pane in RStudio.

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Research direction

Start by running the provided economics and geom_rect example through ggplotly(), then trace the ggplotly conversion entry point for geom_rect. Compare the base ggplot and rendered output; done means rectangles with ymin = -Inf and ymax = Inf display to the plotting-area limits.

Written by the indexing model from the issue text.

Assessment

Tech stack
plotly, r
Domain
data-visualization
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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