Show Groupped Variable Distribution

This is a general function, it can be used in any proper analysis.

show_group_distribution(
  data,
  gvar,
  dvar,
  fun = stats::median,
  order_by_fun = FALSE,
  alpha = 0.8,
  g_label = "label",
  g_angle = 0,
  g_position = "top",
  point_size = 1L,
  segment_size = 1L,
  segment_color = "red",
  xlab = NULL,
  ylab = NULL,
  nrow = 1L,
  background_color = c("#DCDCDC", "#F5F5F5")
)

Arguments

data	a data.frame.
gvar	a group variable name/index.
dvar	a distribution variable name/index.
fun	a function to summarize, default is stats::median, can also be mean.
order_by_fun	if TRUE, reorder the groups by summary measure computed by argument fun.
alpha	alpha for points, range from 0 to 1.
g_label	a string 'label' (default) for labeling with sample size, or 'norm' to show just group name, or a named vector to set facet labels.
g_angle	angle for facet labels, default is 0.
g_position	position for facet labels, default is 'top', can also be 'bottom'.
point_size	size of point.
segment_size	size of segment.
segment_color	color of segment.
xlab	title for x axis.
ylab	title for y axis.
nrow	number of row.
background_color	background color for plot panel.

Value

a ggplot object.

Author

Shixiang Wang w_shixiang@163.com

Examples

set.seed(1234)
data <- data.frame(
  yval = rnorm(120),
  gr = c(rep("A", 50), rep("B", 40), rep("C", 30))
)
p <- show_group_distribution(data,
  gvar = 2, dvar = 1,
  g_label = "norm",
  background_color = "grey"
)
p
p2 <- show_group_distribution(data,
  gvar = "gr", dvar = "yval",
  g_position = "bottom",
  order_by_fun = TRUE,
  alpha = 0.3
)
p2

# Set custom group names
p3 <- show_group_distribution(data,
  gvar = 2, dvar = 1,
  g_label = c("A" = "X", "B" = "Y", "C" = "Z")
)
p3