How To Draw Line On Histogram In R

abline R office : An easy fashion to add directly lines to a plot using R software

• Add a vertical line
• Add together an horizontal line
• Add regression line
• Infos

The aim of this tutorial is to show you how to add one or more straight lines to a graph using R statistical software. The R function abline() tin can be used to add together vertical, horizontal or regression lines to a graph.

A simplified format of the abline() function is :

              abline(a=Nada, b=Goose egg, h=Goose egg, five=Aught, ...)            

• a, b : single values specifying the intercept and the slope of the line
• h : the y-value(s) for horizontal line(southward)
• v : the 10-value(s) for vertical line(south)

Add together a vertical line

The simplified format is :

                abline(v = y)              

Information technology draws a vertical line on the current plot at the specified 'y' coordinates.

                # get-go instance : Add together one line plot(cars) abline(v=15, col="blue") # second example : add two lines  # change line colors, sizes and types plot(cars) abline(v=c(15,20), col=c("blue", "red"), lty=c(1,2), lwd=c(one, 3)) # third example fix.seed(1234); mydata<-rnorm(200) hist(mydata, col="lightblue") abline(five = hateful(mydata), col="ruddy", lwd=3, lty=2)              

Note that, line types (lty) and line width (lwd) are explained hither.

Add an horizontal line

The simplified format is :

                abline(h = x)              

Information technology draws an horizontal line on the current plot at the specified '10' coordinates.

                plot(cars) abline(h=40, col="blue")              

Add regression line

lm() part is used to fit linear models.

                par(mgp=c(ii,1,0), mar=c(3,3,ane,1)) # Fit regression line require(stats) reg<-lm(dist ~ speed, data = cars) coeff=coefficients(reg) # equation of the line :  eq = paste0("y = ", circular(coeff[2],1), "*x ", round(coeff[1],1)) # plot plot(cars, main=eq) abline(reg, col="blue")              

Infos

This assay has been performed using R statistical software (ver. iii.ane.0).

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