get_iers {earthtide}

get_iers

Description

get_iers returns a data.frame of earth orientation parameters from (1962-present). This function requires an active internet connection. Bulletins A and B are combined giving precedence to B. Approximately (~ 7 MB) of data are downloaded. This function is brittle and may fail when data sources change.

Usage

get_iers(a_path = NULL, b_path = NULL, daily_path = NULL, tai_utc_path = NULL)

Arguments

a_path

ftp or http path to download IERS bullitin A

b_path

ftp or http path to download IERS bullitin B

daily_path

ftp or http path to download IERS daily data

tai_utc_path

ftp or http path to tai-utc data

Value

data.frame of earth orientation parameters with the following columns: datetime, ddt, ut1_utc, lod, x, y, dx, dy.

Examples

## Not run: 
eop <- get_iers()

## End(Not run)