geom_line_with_image: Line Plot Using Images

In gsimchoni/ggwithimages: Geoms for ggplot2-style drawing of basic plots using images

Description

This function allows you to draw a simple line plot of y vs. x, using one or two images

Usage

geom_line_with_image(bottomImg = NULL, topImg = NULL, mapping = NULL,
  data = NULL, stat = "identity", position = "identity", na.rm = FALSE,
  show.legend = NA, inherit.aes = TRUE, bgColor = "white",
  lineColor = 1, lineWidth = 1, lineType = "solid", ...)

Arguments

bottomImg	The image "below" the line. This should be an image object as obtained by png::readPNG, jpeg::readJPEG, magick::image_read etc. You must specify at least this image.
topImg	The image "above" the line.
bgColor	Background color above the line in case you don't specify topImg, defaults to white.
lineColor	Line color as accepted by R in the col parameter, defaults to black.
lineWidth	Line width as accepted by R in the lwd parameter, defaults to 1.
lineType	Line type as accepted by R in the lty parameter, defaults to "solid".
...	Other standard ggplot2 parameters such as mapping, data, stat etc.

Note

By default geom_line_with_image will not add padding in the x and y axes. This default behavior of ggplot2 does not make sense when it comes to plotting with images. You can however override this by adding + xlim(c(0, 100)). Make sure the result is meaningful though.

Examples

annapurna <- png::readPNG(system.file("extdata", "annapurna.png", package = "ggwithimages"))
sky <- png::readPNG(system.file("extdata", "sky.png", package = "ggwithimages"))
kathmandu_hourly_aqi <- readr::read_csv(system.file("extdata", "kathmandu_hourly_aqi.csv", package = "ggwithimages"))
library(ggplot2)
ggplot(kathmandu_hourly_aqi, aes(hour, aqi)) +
  geom_line_with_image(annapurna, sky)

gsimchoni/ggwithimages documentation built on May 21, 2019, 3:09 a.m.