shoredate (version 1.1.1)

shoredate_hdr: Find the highest density region of shoreline dates

Description

Function to find 95% highest density region (HDR) for a provided shoreline date. Negative values denote years BCE while positive values denote CE.

Usage

shoredate_hdr(bce, probability, site_name, cal_reso, prob = 0.95)

Value

A list holding start and end points for segments of the highest density region of a shoreline date, the weighted mean date, the probability coverage and site name.

Arguments

bce

A vector holding calendar years associated with a date.

probability

A vector holding the probability mass corresponding to each calendar year.

site_name

A vector holding the name of the site that has been dated.

cal_reso

Resolution on the calendar scale used when dating the site.

prob

A numerical value between 0 and 1 indicating the probability coverage of the HDR. Defaults to 0.95.

Examples

target_point <- sf::st_sfc(sf::st_point(c(538310, 6544255)), crs = 32632)

# Reduce date resolution with cal_reso and elevation_reso for speed
target_date <- shoreline_date(sites = target_point,
                              elevation = 80,
                              elev_reso = 1,
                              cal_reso = 400)

# shoredate_hdr() is already called under the hood with shoreline_date(),
# the result of which is printed when calling the shoreline_date object
target_date

# However, shoredate_hdr() can be applied separately by pulling the
# necessary data from the date
(shoredate_hdr(target_date[[1]][[1]]$date$bce,
               target_date[[1]][[1]]$date$probability,
               target_date[[1]][[1]]$site_name,
               target_date[[1]][[1]]$cal_reso))