library(knitr) knitr::opts_chunk$set(fig.height=4, fig.width=6, cache=TRUE, autodep = TRUE, cache.path = 'geoms-cache/')
In this vignette, we will demonstrate the two geoms: geom_pointline and geom_siderange.
geom_pointline
simply combines geom_point
and geom_line
, while
geom_pointpath
combines geom_point
and geom_path
.
The difference is that geom_line
draws its lines through the data points,
geom_pointline
leaves a small aesthetic gap between the symbol and the line:
library(ggplot2) library(lemon) library(gridExtra) data(sunspot.year) sunspots <- data.frame(count=as.numeric(sunspot.year), year=seq.int(start(sunspot.year)[1], end(sunspot.year)[1])) sunspots <- subset(sunspots, year > 1900) point <- ggplot(sunspots, aes(x=year, y=count)) + geom_point() + geom_line() + labs(title='geom_point + geom_line') pointline <- ggplot(sunspots, aes(x=year, y=count)) + geom_pointline(distance=unit(3, 'pt'), threshold=0.2) + labs(title='geom_pointline') grid.arrange(point, pointline)
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