Add text annotation to a genome track — add_text • ezGenomeTracks

This function adds text annotation to a genome track at a specific position. It is useful for labeling specific genomic features.

Usage

add_text(
  plot,
  x,
  y,
  label,
  color = "black",
  size = 3,
  angle = 0,
  hjust = 0.5,
  vjust = 0.5
)

Arguments

plot: A ggplot2 object representing a genome track
x: X-value (genomic position)
y: Y-value
label: Text label
color: Text color (default: "black")
size: Text size (default: 3)
angle: Text angle (default: 0)
hjust: Horizontal justification (default: 0.5)
vjust: Vertical justification (default: 0.5)

Value

A ggplot2 object with the text annotation added

Examples

if (FALSE) { # \dontrun{
track <- ez_coverage("signal.bw", "chr1:1000000-2000000")
track <- add_text(track, 1500000, 20, "Peak")
} # }