density_chart: Create density chart

In pgarnry/ggplotHelper: Helper functions for great looking ggplots in R

Description

This function is a convinient overlay for creating a beautiful density plot using ggplot2

Usage

density_chart(data, x, group = NULL, title = NULL, sub.title = NULL,
  legend.names = NULL, y.title = NULL, x.title = NULL,
  transparency = 0.3, min.lim = NULL, max.lim = NULL, vline = FALSE,
  vline.custom = NULL, ...)

Arguments

data	data frame containing data for plotting
x	character string specifying name of x variable in data frame
group	character string for grouping of x
title	character string specifying chart title
sub.title	character string specifying chart sub title
legend.names	character string specifying legend names
y.title	character string specifying y-axis title
x.title	character string specifying x-axis title
transparency	numeric setting the level of colour transparency
min.lim	numeric setting minimum limit on x-axis
max.lim	numeric setting maximum limit on x-axis
vline	logical value for drawing vertical lines for the distribution median of x
vline.custom	numeric setting position on vertical line not tied to the distribution of x

Details

Group variable not ideally be a factor but the function will force class factor on the variable.

Use legend names variable to set custom labels on legends. If legend names is NULL the function will force legend names to the colnames of either x or names of groups depending on the input.

The ellipsis is used to pass on arguments to the grey_theme function. Primary use is to specify the legend.position to either "left", "right", "bottom" and "top".

Vline option specifies whether vertical lines showing the median of the distribution should be plotted.

Examples

density_chart(mtcars, "mpg", "cyl", title = "Miles per gallon",
sub.title = "(per groups of cylinders)", vline = TRUE)

pgarnry/ggplotHelper documentation built on May 25, 2019, 2:54 a.m.