How to check data type of every single element of a vector in r?-CodePudding

I want to check if all elements are numeric in the vector y

y <- c(8.2, 2.5, 4.3, 3.2, 4.9, 7.0, NA, 5.3, 7.7, NA, 8.1, 3.0, 6.4, 6.5) is.numeric(y)

is.numeric(y) gives me TRUE although there are NAs in the vector. Is there a way to get the data type of every single element?

CodePudding user response：

Atomic vectors can only have a single data type. So if is.numeric(your_vector) is TRUE, then all elements of the vector are numeric.

There are different types of NA, e.g., NA_character_ which is character class, NA_real_ which is numeric class, etc. See the ?NA help page for more detail. But since all elements of a vector must be the same class, you don't have to check the type of NA values in a numeric vector, you know they are numeric.

A list is a special kind of vector that can hold different classes.

You can test for any NA values in the vector with anyNA(). Or use is.na() to test each individual element.

CodePudding user response：

If you want to check if your vector is.numeric and without NAs, you can do:

is.numeric(y) & all(complete.cases(y))
#[1] FALSE