How to Count the Number of NA in R

This tutorial will go through counting the number of missing values or NAs in a data frame in R. Table of contentsExampleGet Airquality DataSolution #1: Use summarySolution #2: Use sum and is.naSolution #3: Use sum and is.na in FunctionSummary Example Let’s look...

How to Calculate Hamming Distance in R

In R, Hamming distance is a type of distance metric for finding how similar two vectors are. If the vectors are equal in length, Hamming distance determines the number of bit positions different between them. We can also describe Hamming distance as the minimum number...

How to Solve R Error in parse(text): unexpected symbol

This error typically occurs if you have a string starting with a number or if a hyphen is in the wrong place. To solve this error you can change the string so that it does not start with a number. This tutorial will go through the error in detail and how to solve it...