Line Plot in R with Error Bars Last Updated : 24 Dec, 2021 Comments Improve Suggest changes Like Article Like Report A line plot is a graphical representation of a series of data. Line plots are widely used in data visualization. In we use ggplot2( ) and plot( ) function to create line plot. Error bars act as a visual enhancement that help us to see variability of the plotted data. Error Bars are used to show standard error, standard deviation i.e. with the help of integrated error bars in our plot we can know the estimated error. In this article we are going to create a line plot with Error Bars and without Error Bars. We can use plot() function to create scatter plot and line plot also. Syntax: errbar(x, y, yplus, yminus, cap=0.015, main = NULL, sub=NULL, xlab=as.character(substitute(x)), ylab=if(is.factor(x) || is.character(x)) " "else as.character(substitute(y)), add=FALSE, lty=1, type='p', ylim=NULL,pch, lwd=1, errbar.col, ) Where, Sr. no. Parameter Description Default values 1.xIt holds vector of x-axis values.- 2.yIt holds vector of y-axis values.- 3.yplusThe top value of error bars.- 4.yminusThe bottom value of error bars.- 5.capIt is the width of cap 0.015 6.mainThe title of the plotNULL 7.subThe title of sub plotNULL 10.addUsed to add error bars to existing plot set it to True.False 11.ltyThe line type for error bars.1 15.errbar.colTo change the color of error barsblack Approach:Firstly open up your rstudioType the following command and hit enter to install the dependency that will help us to draw error bars in line plots.install.packages("Hmisc")Load library by typing :library(Hmisc)Create two data variables one for the x-axis and another for the y-axisCreate a vector to store error values (randomly)Show error bars using errbar() Example 1: R # Creating random data x = c(1,2,3,4,5,6,8) y = c(8,6,4,5,1,7,6) # generating error_values error_values = c(x) # plotting errbar(x,y,y+error_values,y-error_values,type='b') Output : Fig. 1. Simple line plot with error bars. Example 2: R # Creating random data x = 10:20 y = x*2.5 # generating error_values # you can use any custom # function to calculate error error_values = sqrt(y) # plotting errbar(x,y,y+error_values,y-error_values,type="b", col='black',cex=2,errbar.col='green', xlab="X-axis",ylab="Y-axis", pch="*") Output: Fig. 2. Custom line plot with error bars. Comment More infoAdvertise with us Next Article Line Plot in R with Error Bars A amnindersingh1414 Follow Improve Article Tags : Programming Language Machine Learning R Language Write From Home AI-ML-DS R-plots R-Charts R-Graphs +4 More Practice Tags : Machine Learning Similar Reads Plotting Error Bars in MATLAB Error bars are a way of plotting errors on each point in a data set as vertical bars in a linear plot. MATLAB provides a simple function to plot the error bars for a given data; the errorbar() function. Syntax:errorbar(x,y,errors,...) 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