R Error: Unexpected Symbol in X (2 Examples)


In this tutorial, I’ll show how to fix the error message “unexpected symbol in X” in the R programming language.

The post will contain the following topics:

If you want to learn more about these contents, keep reading.


Example 1: Reproduce the Error: unexpected symbol in X

Example 1 explains how to replicate the error message “unexpected symbol in X” in R. Consider the following numeric vector:

x <- 1:3        # Example vector in R
x               # Print vector
# 1 2 3

Now, let’s assume that we want to multiply this vector by five:

5 x             # Reproducing error message
# Error: unexpected symbol in "5 x"

The error occurs. Why? What happened? That’s what I’ll explain next…


Example 2: Fix the Error: unexpected symbol in X

This Example explains how to get rid of the error message “unexpected symbol in X”. In the following R code we are inserting a mathematical operator (i.e. *) between our multiplier 5 and our vector:

5 * x           # Insert mathematical symbol
# 5 10 15

Now, it works!


Video, Further Resources & Summary

Would you like to learn more about errors in R? Then I can recommend to have a look at the following video of my YouTube channel. I’m explaining the contents of this article in the video:


The YouTube video will be added soon.


In addition, you may want to read the related articles of this website.


Summary: This article showed how to solve the error “unexpected symbol in X” in the R programming language. In case you have any further questions and/or comments, please let me know in the comments section below.


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