rcarbon (version 1.5.1)

subset.CalDates: Subsetting calibrated dates

Description

Subsets calibrated dates (CalDates class object) based on Logical expressions of time intervals.

Usage

# S3 method for CalDates
subset(x, s, p, ...)

Value

A CalDates class object.

Arguments

x

A CalDates class object

s

Logical expression indicating dates to keep. The expression should include the term BP which refers to specific dates.

p

Probability mass meeting the condition defined by ss.

...

Further arguments to be passed to or from other methods (ignored).

Details

The function subsets CalDates class objects by identifying all dates that have a probability mass larger than p for a user defined logical expression of temporal interval containing the term BP, where BP refers to radiocarbon date. See examples for further detailes

Examples

## Generate some calibrated dates
x = calibrate(c(12100,5410,5320,3320),errors=c(20,20,30,30))
## Subsets all dates that have a probability mass above 0.8 before 10000 BP
x2 = subset(x,BP>10000,p=0.8)
## Subsets all dates that have a probability mass above 0.5 between 6000 and 6300 BP
x3 = subset(x,BP>6000&BP<6300,p=0.5)