Reza - 9 months ago 51

R Question

Suppose I have a function that gives two or more data out. For example, a function that gives Lower Confidence Limit and Upper Confidence limit for a statistic.

Let's say the function is like this:

CI(a,b,c,d) and then it provides two answers:

`>[1] 35.25976562 0.02499848`

Now, if I want to use only ONE of these two answers to write a new function, how can I get R use ONLY, say, the first answer in my new function?

Answer

`head`

might be useful for you, this function returns the first parts of a vector in this case.

```
head(CI, 1)
35.25976562
head(CI, 2)
35.25976562 0.02499848
```

Since `head()`

is a generic function, It may also has been extended to other classes. Read more about head by typing `?head`

in your R console.