Coding Ref

The R error, "the condition has length > 1 and only the first element will be used" occurs when a `vector`

is passed to the `if()`

function instead of individual elements. To solve this, use the `ifelse()`

function.

Here is an example of when the error occurs. We will create a `vector`

and check if each value in the vector is greater than 5. If it is, then we will multiple it by 2.

```
# 👇️ create vector
example_data <- c(2, 3, 4, 6, 7, 3)
# 👇️ check if each value is greater than 5
# if so, multiple it by 2
# ⛔️ Warning message: the condition has length > 1 and only the first element will be used
if (example_data > 5) {
example_data * 2
}
```

A warning message results because we passed a `vector`

to the `if()`

statement.

`if()`

statements can only check one element in the `vector`

at a time.

To solve this, use an `ifelse()`

function.

```
# ✅ this runs
ifelse (example_data > 5, example_data * 2, example_data)
>> 2 3 4 12 14 3
```

The `ifelse()`

function returns the `example_data`

if it is less than or equal to 5. If it is greater than 5, then it will return `example_data`

multiplied by 2.

The R error, "the condition has length > 1 and only the first element will be used" occurs when a `vector`

is passed to the `if()`

function instead of individual elements. To solve this, use the `ifelse()`

function.

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