How to Handle “undefined columns selected” in R?
In this article, we will discuss how to handle “undefined columns selected” error in R Programming Language.
This error is specific to dataframe in R. This type of error will occur when we select a subset of a data frame and forget to add a comma.
Example: Check the error in the dataframe
Here we created a dataframe with 3 columns and select the values in which the second column value is greater than 45
This is because of neglecting comma(,) behind the value. The dataframe must choose the column after comma operator. So we have to keep comma.