gggenes (version 0.6.0)

geom_terminator_label: A 'ggplot2' geom to add text labels to transcription terminators

Description

geom_terminator_label() adds text labels to terminators drawn with geom_terminator().

Usage

geom_terminator_label(
  mapping = NULL,
  data = NULL,
  stat = "identity",
  position = "identity",
  na.rm = FALSE,
  show.legend = FALSE,
  inherit.aes = FALSE,
  terminator_height = unit(4, "mm"),
  label_height = unit(3, "mm"),
  ...
)

Arguments

mapping, data, stat, position, na.rm, show.legend, inherit.aes, ...

As standard for ggplot2. inherit.aes is set to FALSE by default, as terminators are not likely to share any plot aesthetics other than y.

terminator_height

grid::unit() object giving the height of the terminator being labelled, and hence the distance of the label above or below the molecule line. Can be set as a negative value for terminators drawn below the line. Defaults to 4 mm, to align labels with the default height of geom_terminator().

label_height

grid::unit() object giving the height of the label text. Defaults to 3 mm.

Aesthetics

• x (required; position of the terminator)

• y (required; molecule)

• label (required; the label text)

• colour

• size

• alpha

• family

• fontface

• angle

Details

Standard 'ggplot2' aesthetics for text are supported (see Aesthetics).

See Also

geom_terminator()

Examples

ggplot2::ggplot(example_genes, ggplot2::aes(xmin = start, xmax = end,
                                            y = molecule, fill = gene)) +
  geom_gene_arrow() +
  geom_terminator(data = example_terminators, 
                  ggplot2::aes(x = position, y = molecule)) +
  geom_terminator_label(data = example_terminators,
                     ggplot2::aes(x = position, y = molecule, label = name)) +
  ggplot2::facet_wrap(~ molecule, scales = "free")