Chord / Circos plot

ChordPlot is used to create a chord plot to visualize the relationships between two categorical variables. CircosPlot is an alias of ChordPlot.

Usage

ChordPlot(
  data,
  y = NULL,
  from = NULL,
  from_sep = "_",
  to = NULL,
  to_sep = "_",
  split_by = NULL,
  split_by_sep = "_",
  flip = FALSE,
  links_color = c("from", "to"),
  theme = "theme_this",
  theme_args = list(),
  palette = "Paired",
  palcolor = NULL,
  alpha = 0.5,
  labels_rot = FALSE,
  title = NULL,
  subtitle = NULL,
  seed = 8525,
  combine = TRUE,
  nrow = NULL,
  ncol = NULL,
  byrow = TRUE,
  ...
)

CircosPlot(
  data,
  y = NULL,
  from = NULL,
  from_sep = "_",
  to = NULL,
  to_sep = "_",
  split_by = NULL,
  split_by_sep = "_",
  flip = FALSE,
  links_color = c("from", "to"),
  theme = "theme_this",
  theme_args = list(),
  palette = "Paired",
  palcolor = NULL,
  alpha = 0.5,
  labels_rot = FALSE,
  title = NULL,
  subtitle = NULL,
  seed = 8525,
  combine = TRUE,
  nrow = NULL,
  ncol = NULL,
  byrow = TRUE,
  ...
)

Arguments

data

A data frame.

y

A character string specifying the column name of the data frame to plot for the y-axis.

from

A character string of the column name to plot for the source. A character/factor column is expected.

from_sep

A character string to concatenate the columns in from, if multiple columns are provided.

to

A character string of the column name to plot for the target. A character/factor column is expected.

to_sep

A character string to concatenate the columns in to, if multiple columns are provided.

split_by

The column(s) to split data by and plot separately.

split_by_sep

The separator for multiple split_by columns. See split_by

flip

A logical value to flip the source and target.

links_color

A character string to specify the color of the links. Either "from" or "to".

theme

A character string or a theme class (i.e. ggplot2::theme_classic) specifying the theme to use. Default is "theme_this".

theme_args

A list of arguments to pass to the theme function.

palette

A character string specifying the palette to use. A named list or vector can be used to specify the palettes for different split_by values.

palcolor

A character string specifying the color to use in the palette. A named list can be used to specify the colors for different split_by values. If some values are missing, the values from the palette will be used (palcolor will be NULL for those values).

alpha

A numeric value specifying the transparency of the plot.

labels_rot

A logical value to rotate the labels by 90 degrees.

title

A character string specifying the title of the plot. A function can be used to generate the title based on the default title. This is useful when split_by is used and the title needs to be dynamic.

subtitle

A character string specifying the subtitle of the plot.

seed

The random seed to use. Default is 8525.

combine

Whether to combine the plots into one when facet is FALSE. Default is TRUE.

nrow

A numeric value specifying the number of rows in the facet.

ncol

A numeric value specifying the number of columns in the facet.

byrow

A logical value indicating whether to fill the plots by row.

...

Additional arguments.

Value

A combined plot or a list of plots

Examples

# \donttest{
set.seed(8525)
data <- data.frame(
    nodes1 = sample(c("Soure1", "Source2", "Source3"), 10, replace = TRUE),
    nodes2 = sample(letters[1:3], 10, replace = TRUE),
    y = sample(1:5, 10, replace = TRUE)
)

ChordPlot(data, from = "nodes1", to = "nodes2")

ChordPlot(data, from = "nodes1", to = "nodes2",
          links_color = "to", labels_rot = TRUE)

ChordPlot(data, from = "nodes1", to = "nodes2", y = "y")

ChordPlot(data, from = "nodes1", to = "nodes2", split_by = "y")

ChordPlot(data, from = "nodes1", to = "nodes2", split_by = "y",
          palette = c("1" = "Reds", "2" = "Blues", "3" = "Greens", "4" = "Purp"))

ChordPlot(data, from = "nodes1", to = "nodes2", flip = TRUE)

# }