Pie chart

Create a pie chart.

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")

Examples


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

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

head(df)
#>    group value
#> 1   Male    25
#> 2 Female    25
#> 3  Child    50


# 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"))

Arguments

Details

See also

Examples