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Bank a plot's own data to 45 degrees

Source: R/banking.R
bank_plot.Rd

A convenience wrapper around bank_slopes() that extracts x/y directly from an already-specified ggplot, so you do not have to separately reconstruct the plotted vectors by hand. It builds plot with ggplot2::ggplot_build(), computes the banking ratio from one layer's fully resolved data (i.e. after stats, position adjustments, and faceting have been applied), and returns plot + coord_fixed(ratio = ...) (see ggplot2::coord_fixed()).

Usage

bank_plot(
  plot,
  method = c("ms", "as", "ao", "was"),
  cull = TRUE,
  layer = 1,
  ...
)

Arguments

plot

A ggplot object.

method, cull, ...

Passed to bank_slopes().

layer

Integer. Which layer of plot to extract x/ y from. Defaults to the first layer.

Value

The plot, with ggplot2::coord_fixed() added.

Details

Segments are never averaged across a group or facet panel boundary: slopes are computed within each combination of group and PANEL and then combined, so a line plot with multiple series (or facets) is banked correctly rather than picking up spurious slopes between the end of one line and the start of the next.

Note that ggplot2::coord_fixed() applies a single ratio to every panel, so faceted plots are banked using the combined data from all panels rather than a ratio tailored to each one individually.

See also

bank_slopes()

Examples

library("ggplot2")
x <- seq_along(sunspot.year)
y <- as.numeric(sunspot.year)
p <- ggplot(data.frame(x = x, y = y), aes(x = x, y = y)) +
  geom_line()
bank_plot(p)