geom_rect_cm {plothelper}

Geom Layer for Rectangle with Absolute Size

Description

This layer uses centimeter as unit to draw rectangles so that the size and shape will not be influenced by the coordinate systems (even when a polar system is used).

Usage

geom_rect_cm(
  mapping = NULL,
  data = NULL,
  stat = "identity",
  position = "identity",
  na.rm = FALSE,
  show.legend = NA,
  inherit.aes = TRUE,
  ...
)

Arguments

mapping

aes mapping.

data

data.

stat

stat.

position

position.

na.rm

logical, whether to remove NA values.

show.legend

whether to show legend.

inherit.aes

logical, whether to inherit aes from ggplot().

...

additional parameters.

Details

Accepted properties are:

• (1) width width in centimeter.

• (2) height height in centimeter.

• (3) color color of the outline.

• (4) fill color inside the shape.

• (5) alpha alpha of color and fill.

• (6) size line width of outline.

• (7) linetype line type.

• (8) hjust horizontal adjustment, default is 0.5 which means no adjustment.

• (9) vjust vertical adjustment, default is 0.5 which means no adjustment.

• (10) x x coordinates of middle points.

• (11) y y coordinates of middle points.

Examples

library(ggplot2)
ggplot()+xlim(-0.5, 10.5)+
	geom_rect_cm(aes(x=1: 10, y=rep(4, 10)), fill="red", height=rep(1: 2, each=5), 
		vjust=rep(c(0, 0.5), 5))+
	geom_point(aes(x=1: 10, y=rep(4, 10)), color="green")