Thursday, April 4, 2013

RG #1: XY error bar plot

The following example shows how to plot XY error bar plot in R using ggplot2


# data 
set.seed(8978)
df1 <- data.frame( x1 = 1:50, y = seq(1, 150, 3) + rnorm(50, 0,5) , se = rnorm(50, 0,3))
limits <- aes(ymax = y + se, ymin=y - se)

#plot
require(ggplot2)
plot1 <- ggplot(df1, aes(y= y, x=x1))
plot1 + geom_point(colour =" red" ) + geom_errorbar(limits, width=1) + theme_bw()

#Adding line to above plot
 plot1 + geom_point(colour ="red" ) + geom_line(colour =" blue" ) + geom_errorbar(limits,width=1) + theme_bw()



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