How to Use “NOT IN” Operator in R?
In this article, we will discuss NOT IN Operator in R Programming Language.
NOT IN Operator is used to check whether the element in present or not. The symbol used for IN operator is “%in%”. For NOT IN operator we have to add ” ! ” operator before that , so the symbol for NOT IN operator is “! %in%”.
Method 1: Use “NOT IN” with Vectors
Here we are going to use this operator in a vector to select the elements that are not in particular elements.
vector[!(vector %in% c(values))]
- vector is an input vector
- values are the values to be checked
 23 34 56 23 16 78 56 4 5 6 7 8  16 78 4 8
Method 2: Use “NOT IN” with DataFrames
Here we are going to use this filter in dataframe. We can select the values based on the column using this operator using subset function.
subset(dataframe, !(column_name %in% c(values)))
- dataframe is the input dataframe
- values are values to be checked for selection