Alpha transparency scales

See ggplot2::scale_alpha() for details.

scale_pattern_alpha_continuous(..., range = c(0.1, 1))

scale_pattern_alpha(..., range = c(0.1, 1))

scale_pattern_alpha_discrete(...)

scale_pattern_alpha_ordinal(..., range = c(0.1, 1))

Arguments

...

Other arguments passed on to ggplot2::continuous_scale(), ggplot2::binned_scale(), or ggplot2::discrete_scale() as appropriate, to control name, limits, breaks, labels and so forth.

range

Output range of alpha values. Must lie between 0 and 1.

Value

A ggplot2::Scale object.

Examples

  if (require("ggplot2")) {
    # 'stripe' pattern example
    df <- data.frame(level = c("a", "b", "c", 'd'), outcome = c(2.3, 1.9, 3.2, 1))
    gg <- ggplot(df) +
      geom_col_pattern(
        aes(level, outcome, pattern_fill = level, pattern_alpha = outcome),
        pattern_density = 0.6,
        pattern_size = 1.5,
        pattern = 'stripe',
        fill    = 'white',
        colour  = 'black',
        linewidth = 1.5
      ) +
      theme_bw(18) +
      theme(legend.position = 'none') +
      scale_pattern_alpha() +
      labs(
        title    = "ggpattern::geom_col_pattern()",
        subtitle = "pattern = 'stripe'"
      )
    plot(gg)
  }