plot_qq_numeric.data.frame: Plot Q-Q plot of numerical variables

In dlookr: Tools for Data Diagnosis, Exploration, Transformation

Plot Q-Q plot of numerical variables

Description

The plot_qq_numeric() to visualizes the Q-Q plot of numeric data or relationship to specific categorical data.

Usage

plot_qq_numeric(.data, ...)

## S3 method for class 'data.frame'
plot_qq_numeric(
  .data,
  ...,
  col_point = "steelblue",
  col_line = "black",
  title = "Q-Q plot by numerical variables",
  each = FALSE,
  typographic = TRUE,
  base_family = NULL
)

## S3 method for class 'grouped_df'
plot_qq_numeric(
  .data,
  ...,
  col_point = "steelblue",
  col_line = "black",
  title = "Q-Q plot by numerical variables",
  each = FALSE,
  typographic = TRUE,
  base_family = NULL
)

Arguments

.data	data.frame or a tbl_df or a grouped_df.
...	one or more unquoted expressions separated by commas. You can treat variable names like they are positions. Positive values select variables; negative values to drop variables. If the first expression is negative, plot_qq_numeric() will automatically start with all variables. These arguments are automatically quoted and evaluated in a context where column names represent column positions. They support unquoting and splicing.
col_point	character. a color of points in Q-Q plot.
col_line	character. a color of line in Q-Q plot.
title	character. a main title for the plot.
each	logical. Specifies whether to draw multiple plots on one screen. The default is FALSE, which draws multiple plots on one screen.
typographic	logical. Whether to apply focuses on typographic elements to ggplot2 visualization. The default is TRUE. if TRUE provides a base theme that focuses on typographic elements using hrbrthemes package.
base_family	character. The name of the base font family to use for the visualization. If not specified, the font defined in dlookr is applied. (See details)

Details

The The Q-Q plot helps determine whether the distribution of a numeric variable is normally distributed. plot_qq_numeric() shows Q-Q plots of several numeric variables on one screen. This function can also display a Q-Q plot for each level of a specific categorical variable.

The base_family is selected from "Roboto Condensed", "Liberation Sans Narrow", "NanumSquare", "Noto Sans Korean". If you want to use a different font, use it after loading the Google font with import_google_font().

Examples

# Visualization of all numerical variables
plot_qq_numeric(heartfailure)

# Select the variable to diagnose
plot_qq_numeric(heartfailure, "age", "time")
plot_qq_numeric(heartfailure, -age, -time)

# Not allow the typographic elements
plot_qq_numeric(heartfailure, "age", typographic = FALSE)

# Using pipes ---------------------------------
library(dplyr)

# Plot of all numerical variables
heartfailure %>%
  plot_qq_numeric()

# Using groupd_df  ------------------------------
heartfailure %>% 
  group_by(smoking) %>% 
  plot_qq_numeric()

heartfailure %>% 
  group_by(smoking) %>% 
  plot_qq_numeric(each = TRUE)  

dlookr documentation built on May 29, 2024, 2 a.m.