`yearquarter()`

is a constructor for `<grates_yearquarter>`

objects.

## Arguments

- year
`[integer]`

Vector representing the year associated with

`quarter`

.`double`

vectors will be converted via`as.integer(floor(x))`

.- quarter
`[integer]`

Vector representing the quarter associated with `year.

`double`

vectors will be converted via`as.integer(floor(x))`

.

## Details

`<grates_yearquarter>`

objects are stored as the number of quarters (starting
at 0) since the Unix Epoch (1970-01-01).