default_label: Placeholders for default values

In rstudio-education/ggcheck: Inspect 'ggplot2' Plots for Automated Grading in Learning Exercises

Placeholders for default values

Description

These functions generate placeholder values.

• default_label() can be used as a named argument in uses_labels() to check that a label matches the result of get_default_labels() with that name.

• default_param() can be used as a named argument in uses_geom_params() to check that a parameter matched the result of get_default_params() with that name.

Usage

default_label()

default_param()

Value

A placeholder value to be used within uses_labels() or uses_geom_params().

Examples

require(ggplot2)

p <- ggplot(data = mpg, mapping = aes(x = displ, y = hwy, color = trans)) +
  geom_smooth(se = FALSE) +
  labs(title = "My plot", x = "Weight", y = "MPG")

uses_labels(p, x = default_label(), color = default_label())

uses_geom_params(p, "smooth", size = default_param(), se = default_param())

rstudio-education/ggcheck documentation built on May 12, 2023, 11:33 a.m.