One common error you may encounter in R is:

Error in xy.coords(x, y, xlabel, ylabel, log) : 'x' and 'y' lengths differ

This error occurs when you attempt to create a plot of two variables but the variables don’t have the same length.

This tutorial shares exactly how to fix this error.

**How to Reproduce the Error**

Suppose we attempt to create a scatterplot of the following two variables in R:

#define x and y variables x <- c(2, 5, 5, 8) y <- c(22, 28, 32, 35, 40, 41) #attempt to create scatterplot of x vs. y plot(x, y) Error in xy.coords(x, y, xlabel, ylabel, log) : 'x' and 'y' lengths differ

We receive an error because the length of x and y are not equal.

We can confirm this by printing the length of each variable:

#print length of x length(x) [1] 4 #print length of y length(y) [1] 6 #check if length of x and y are equal length(x) == length(y) [1] FALSE

**How to Fix the Error**

The easiest way to fix this error is to simply make sure that both vectors have the same length:

#define x and y variables to have same length x <- c(2, 5, 5, 8, 9, 12) y <- c(22, 28, 32, 35, 40, 41) #confirm that x and y are the same length length(x) == length(y) [1] TRUE create scatterplot of x vs. y plot(x, y)

If one vector happens to be shorter than the other, you could choose to plot only the values up to the length of the shorter vector.

For example, if vector x has 4 values and vector y has 6 values, we could create a scatterplot using only the first 4 values of each vector:

#define x and y variables x <- c(2, 5, 5, 8) y <- c(22, 28, 32, 35, 40, 41) #create scatterplot of first 4 pairwise values of x vs. y plot(x, y[1:length(x)])

Notice that only the first four values of each vector are used to create the scatterplot.

**Additional Resources**

How to Fix in R: NAs Introduced by Coercion

How to Fix in R: Subscript out of bounds

How to Fix: longer object length is not a multiple of shorter object length