gg_quantiles {ggcleveland}

Quantile-Quantile plots

Description

Returns a quantile-quantile plot to compare any given number of groups

Usage

gg_quantiles(
  df,
  vble,
  group,
  combined = FALSE,
  xlabel = NULL,
  ylabel = NULL,
  ...
)

Arguments

df

dataframe

vble

numeric variable to be analized

group

character or factor grouping variable

combined

logical, defaults to FALSE, producing a matrix of pairwise QQ plots. If TRUE, it produces a QQ plot of quantiles of each group versus quantiles calculated by the combination of all groups. This is useful to study residuals from a fit.

xlabel

label for x-axis

ylabel

label for y-axis

...

parameters to be passed to geom_point(), such as size, color, shape.

Value

a ggplot

Examples

library(ggplot2)
data(futbol)

# Multiple groups
gg_quantiles(futbol, dist, longp)
gg_quantiles(futbol, dist, longp, size = 0.4, color = "red", shape = 3) +
  theme(panel.spacing = unit(2, "lines")) +
  theme_bw()

# Only 2 groups
futbol2 <- dplyr::filter(futbol, longp %in% c("< 0.81 m", "0.81 a 0.90 m"))
gg_quantiles(futbol2, dist, longp)

# Each groups vs quantiles from all groups combined
gg_quantiles(futbol, dist, longp, combined = TRUE)