# How to Filter a Vector in R (4 Examples)

You can use the following methods to filter a vector in R:

Method 1: Filter for Elements Equal to Some Value

```#filter for elements equal to 8
x[x == 8]
```

Method 2: Filter for Elements Based on One Condition

```#filter for elements less than 8
x[x < 8]```

Method 3: Filter for Elements Based on Multiple Conditions

```#filter for elements less than 8 or greater than 12
x[(x < 8) | (x > 12)]```

Method 4: Filter for Elements in List

```#filter for elements equal to 2, 6, or 12
x[x %in% c(2, 6, 12)]```

The following examples show how to use each method in practice.

## Example 1: Filter for Elements Equal to Some Value

The following code shows how to filter a vector in R for elements that are equal to 8:

```#create vector
x <- c(1, 2, 2, 4, 6, 8, 8, 8, 12, 15)

#filter for elements equal to 8
x[x == 8]

 8 8 8
```

We can just as easily filter for elements that are not equal to 8:

```#create vector
x <- c(1, 2, 2, 4, 6, 8, 8, 8, 12, 15)

#filter for elements not equal to 8
x[x != 8]

  1  2  2  4  6 12 15

```

## Example 2: Filter for Elements Based on One Condition

The following code shows how to filter a vector in R for elements that are less than 8:

```#create vector
x <- c(1, 2, 2, 4, 6, 8, 8, 8, 12, 15)

#filter for elements less than 8
x[x < 8]

 1 2 2 4 6
```

## Example 3: Filter for Elements Based on Multiple Conditions

The following code shows how to filter a vector in R for elements that are less than 8 or greater than 12:

```#create vector
x <- c(1, 2, 2, 4, 6, 8, 8, 8, 12, 15)

#filter for elements less than 8
x[(x < 8) | (x > 12)]

  1  2  2  4  6 15```

## Example 4: Filter for Elements in List

The following code shows how to filter a vector in R for elements that are equal to values in a list:

```#create vector
x <- c(1, 2, 2, 4, 6, 8, 8, 8, 12, 15)

#filter for elements equal to 2, 6, or 12
x[x %in% c(2, 6, 12)]

  2  2  6 12
```