![]() ![]() The abline() function can be used to add vertical, horizontal or regression lines to plot. #Plt a linein r how to#In this tutorial, we will learn how to use plot () function to draw line plot, with example programs. How do you plot a straight line in R abline() function in R Language is used to add one or more straight lines to a graph. If we want to draw a basic line plot in R, we can use the plot function with the specification type l. ![]() At first, the plot function should be called to construct a plot where there is a mapping of variables specified by the first two arguments. To draw a line plot in R, call plot () function and along with the data to plot, pass the value l for type parameter. To create a regression line in base R, we use abline function after creating the scatterplot but if we want to have the line dash format then lty argument must also be used with value equals to 2 after defining the regression model inside abline. Use the lines () Function to Add a Line to a Plot in R The lines () function is part of the R graphics package, and it’s used to add lines to the plot. ![]()
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