plt_parallel_coordinates {kdry}

plt_parallel_coordinates

Description

Parallel coordinates plot

Usage

plt_parallel_coordinates(
  data,
  cols = NULL,
  color_variable = NULL,
  color_args = list(alpha = 0.6, begin = 0.1, end = 0.9, option = "inferno", direction =
    1),
  line_jitter = list(w = 0.04, h = 0.04),
  text_label_size = 3.5
)

Arguments

data

A data.table object with the columns containing the parameters to be plotted with the parallel coordinates plot.

cols

A character vector with column names to subset data (default: NULL).

color_variable

A character. The name of the column to be used to colorize the lines of the plot (default: NULL).

color_args

A list with parameters for the color gradient (see details).

line_jitter

A list with the elements w and h to define a line jitter (default: list(w = 0.04, h = 0.04)), which are passed further on to define the position of ggplot2::geom_line().

text_label_size

A numeric value to define the size of the text annotations (default: 3.5).

Details

The color gradient of the plotted lines can be defined with a list provided to the argument color_args. Its default values are alpha = 0.6, begin = .1, end = .9, option = "inferno", and direction = 1 and are passed furhter on to ggplot2::scale_color_viridis_c(). The implementation to display categorical variables is still experimental.

Value

Returns a parallel coordinates plot as ggplot2 object.

See Also

ggplot2::scale_color_viridis_c()

Examples

if (require("ggplot2")) {
  data("iris")
  plt_parallel_coordinates(
    data = data.table::as.data.table(iris[, -5]),
    cols = colnames(iris)[c(-1, -5)],
    color_variable = "Sepal.Length"
  )
}