prism_shape_pal: Prism shape palettes

In ggprism: A 'ggplot2' Extension Inspired by 'GraphPad Prism'

Prism shape palettes

Description

Shape palettes that approximate those used in GraphPad Prism. No unicode characters are used, only the default symbols available in R.

Usage

prism_shape_pal(palette = c("default", "filled", "complete"))

Arguments

palette

string. Palette name, one of: default, filled, or complete.

Details

The default palette supports up to 9 values. It does not use any symbols with a fill.

The filled palette supports up to 10 values. The first 5 symbols have a fill.

The complete palette supports up to 14 values. Symbols 5 to 9 have a fill.

Value

Returns a function which takes a single integer as its only argument and returns a character vector of integers which correspond to R plot pch symbols. See the examples below for usage.

Examples

library(ggplot2)

## list all available shape palettes
ggprism_data$shape_palettes

## select some shapes from a palette
prism_shape_pal(palette = "filled")(4)

## see all the shapes in a specific palette
# define a function for convenience
show_shapes <- function(palette) {
  df_shapes <- ggprism_data$shape_palettes[[palette]][, -1]
  df_shapes$pch_f <- factor(df_shapes$pch, levels = df_shapes$pch)

  ggplot(df_shapes, aes(x = 0, y = 0, shape = pch)) +
    geom_point(aes(shape = pch), size = 5, fill = 'red') +
    scale_shape_identity() +
    facet_wrap(~ pch_f) +
    theme_void()
}

# show the shapes in the palette "complete"
show_shapes("complete")

ggprism documentation built on May 29, 2024, 5:59 a.m.