# How to Fix: error in xy.coords(x, y, xlabel, ylabel, log) : ‘x’ and ‘y’ lengths differ

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)

 4

#print length of y
length(y)

 6

#check if length of x and y are equal
length(x) == length(y)

 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)

 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.