calc_shape_pal: Calc shape palette (discrete)

In ggthemes: Extra Themes, Scales and Geoms for 'ggplot2'

Calc shape palette (discrete)

Description

Shape palette based on the shapes used in LibreOffice Calc.

Usage

calc_shape_pal(unicode = FALSE)

Arguments

unicode

If TRUE, return pch codes derived from Unicode glyphs, as this palette did before ggthemes 6.1.0. Glyph shapes are drawn by the device font, so they render as blank boxes in a font without coverage; the default returns base pch codes, which every font can draw.

Value

A palette function. It takes the number of shapes n and returns an integer vector of n shape (pch) codes, and can be used as the palette argument of discrete_scale().

Note

This palette supports seven values by default and thirteen with unicode = TRUE. Six of Calc's thirteen symbols – the solid down, left and right triangles, the bowtie, the hourglass and the four-pointed star – have no base pch equivalent and are dropped rather than approximated by a different shape. Restoring them with unicode = TRUE needs a font covering Geometric Shapes, Dingbats and Miscellaneous Mathematical Symbols-B; Noto Sans Symbols 2 is effectively the only free font with the last of these.

See Also

Other shapes calc: scale_shape_calc()

Examples

# The seven shapes with a font-independent equivalent.
show_shapes(calc_shape_pal()(7))

## Not run: 
  # All thirteen, drawn from the device font. Needs a font covering Geometric
  # Shapes, Dingbats and Miscellaneous Mathematical Symbols-B, such as
  # Noto Sans Symbols 2.
  show_shapes(calc_shape_pal(unicode = TRUE)(13))

## End(Not run)

ggthemes documentation built on Oct. 4, 2026, 1:06 a.m.