Shorten and offset the segment

This function takes a data frame representing segments in a plot and shortens and offsets them based on the provided arguments.

Usage

segements_df(data, shorten_start, shorten_end, offset)

Arguments

data

A data frame containing the segments. It should have columns 'x', 'y', 'xend', and 'yend' representing the start and end points of each segment.

shorten_start

The amount to shorten the start of each segment by.

shorten_end

The amount to shorten the end of each segment by.

offset

The amount to offset each segment by.

Value

The modified data frame with the shortened and offset segments.

Examples

library(ggplot2)
temp_nodes <- data.frame(
  "x" = c(10, 40),
  "y" = c(10, 30)
)
data <- data.frame(
  "x" = c(10, 40),
  "y" = c(10, 30),
  "xend" = c(40, 10),
  "yend" = c(30, 10)
)

ggplot(temp_nodes, aes(x = x, y = y)) +
  geom_point(size = 12) +
  xlim(0, 50) +
  ylim(0, 50) +
  geom_segment(
    data = data,
    aes(x = x, xend = xend, y = y, yend = yend)
  )


ggplot(temp_nodes, aes(x = x, y = y)) +
  geom_point(size = 12) +
  xlim(0, 50) +
  ylim(0, 50) +
  geom_segment(
    data = segements_df(
      data,
      shorten_start = 2,
      shorten_end = 3,
      offset = 1
    ),
    aes(x = x, xend = xend, y = y, yend = yend)
  )