ggpubr (version 0.6.0)

ggpie: Pie chart

Description

Create a pie chart.

Usage

ggpie(
  data,
  x,
  label = x,
  lab.pos = c("out", "in"),
  lab.adjust = 0,
  lab.font = c(4, "plain", "black"),
  font.family = "",
  color = "black",
  fill = "white",
  palette = NULL,
  size = NULL,
  ggtheme = theme_pubr(),
  ...
)

Arguments

data

a data frame

x

variable containing values for drawing.

label

variable specifying the label of each slice.

lab.pos

character specifying the position for labels. Allowed values are "out" (for outside) or "in" (for inside).

lab.adjust

numeric value, used to adjust label position when lab.pos = "in". Increase or decrease this value to see the effect.

lab.font

a vector of length 3 indicating respectively the size (e.g.: 14), the style (e.g.: "plain", "bold", "italic", "bold.italic") and the color (e.g.: "red") of label font. For example lab.font= c(4, "bold", "red").

font.family

character vector specifying font family.

color, fill

outline and fill colors.

palette

the color palette to be used for coloring or filling by groups. Allowed values include "grey" for grey color palettes; brewer palettes e.g. "RdBu", "Blues", ...; or custom color palette e.g. c("blue", "red"); and scientific journal palettes from ggsci R package, e.g.: "npg", "aaas", "lancet", "jco", "ucscgb", "uchicago", "simpsons" and "rickandmorty".

size

Numeric value (e.g.: size = 1). change the size of points and outlines.

ggtheme

function, ggplot2 theme name. Default value is theme_pubr(). Allowed values include ggplot2 official themes: theme_gray(), theme_bw(), theme_minimal(), theme_classic(), theme_void(), ....

...

other arguments to be passed to be passed to ggpar().

Details

The plot can be easily customized using the function ggpar(). Read ?ggpar for changing:

• main title and axis labels: main, xlab, ylab

• axis limits: xlim, ylim (e.g.: ylim = c(0, 30))

• axis scales: xscale, yscale (e.g.: yscale = "log2")

• color palettes: palette = "Dark2" or palette = c("gray", "blue", "red")

• legend title, labels and position: legend = "right"

• plot orientation : orientation = c("vertical", "horizontal", "reverse")

See Also

ggpar, ggline

Examples

# Data: Create some data
# +++++++++++++++++++++++++++++++

df <- data.frame(
 group = c("Male", "Female", "Child"),
  value = c(25, 25, 50))

head(df)


# Basic pie charts
# ++++++++++++++++++++++++++++++++

ggpie(df, "value", label = "group")

# Reducing margins around the pie chart
ggpie(df, "value", label = "group") +
 theme( plot.margin = unit(c(-.75,-.75,-.75,-.75),"cm"))


# Change color
# ++++++++++++++++++++++++++++++++

# Change fill color by group
# set line color to white
# Use custom color palette
 ggpie(df, "value", label = "group",
      fill = "group", color = "white",
       palette = c("#00AFBB", "#E7B800", "#FC4E07") )


# Change label
# ++++++++++++++++++++++++++++++++

# Show group names and value as labels
labs <- paste0(df$group, " (", df$value, "%)")
ggpie(df, "value", label = labs,
   fill = "group", color = "white",
   palette = c("#00AFBB", "#E7B800", "#FC4E07"))

# Change the position and font color of labels
ggpie(df, "value", label = labs,
   lab.pos = "in", lab.font = "white",
   fill = "group", color = "white",
   palette = c("#00AFBB", "#E7B800", "#FC4E07"))