Line types in R : lty
The different line types available in R are shown in the figure hereafter. The argument lty can be used to specify the line type. To change line width, the argument lwd can be used.
The different line types
The function used to generate this figure is provided at the end of this document.
line type (lty) can be specified using either text (“blank”, “solid”, “dashed”, “dotted”, “dotdash”, “longdash”, “twodash”) or number (0, 1, 2, 3, 4, 5, 6). Note that lty = “solid” is identical to lty=1.
Examples
# Solid line (by default)
plot(1:10, 1:10, type="l")
# Use dashed line type
plot(1:10, 1:10, type="l", lty=2)
# Change line width
plot(1:10, 1:10, type="l", lty=2, lwd=3)
By default lty = 1
R script to generate a plot of line types
Use the following R function to display a graph of the line types available in R :
#Line types
#++++++++++++++++++++++++++++++++++++++++++++
generateRLineTypes<-function(){
oldPar<-par()
par(font=2, mar=c(0,0,0,0))
plot(1, pch="", ylim=c(0,6), xlim=c(0,0.7), axes=FALSE,xlab="", ylab="")
for(i in 0:6) lines(c(0.3,0.7), c(i,i), lty=i, lwd=3)
text(rep(0.1,6), 0:6, labels=c("0.'blank'", "1.'solid'", "2.'dashed'", "3.'dotted'",
"4.'dotdash'", "5.'longdash'", "6.'twodash'"))
par(mar=oldPar$mar,font=oldPar$font )
}
generateRLineTypes()
Infos
This analysis has been performed using R (ver. 3.1.0).
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