interpDates: interpDates

Description Usage Arguments Details Value Author(s) References Examples

Description

interpDates interpolates dates for any undated intervals in a sediment core from the midpoint and age of the dated intervals, as well as the sectioning resolution.

Three sets of interpolated dates are returned:

For more involved approaches to the estimation of age-depth relationships consult Blaauw and Heegaard (2012).

Usage

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interpDates(d, intervalWidth=0.5)

Arguments

d

matrix or data frame containing the input data

intervalWidth

(defaults to a constant value of 0.5): a single numeric values is used to indicate a constant sectioning resolution, but a vector (with interval widths for the full core) can also be used to provide the width of each interval in the core

Details

the input data from the dated sediment intervals should be arranged in 2 columns:

Value

core, the table containing the interpolated dates for each interval.

Author(s)

Adam Jeziorski

References

Blaauw M, Heegaard E (2012) 12. Estimation of age-depth relationships. In: Birks HJB, Lotter AF, Juggins S, Smol JP (eds.) Tracking Environmental Change Using Lake Sediments. Volume 5: Data Handling and Numerical Techniques. Springer, Netherlands, pp 379-413

Examples

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#4 dated intervals with a constant sectioning resolution of 0.5cm
interpDates.input <- cbind(c(0.25, 4.25, 8.25, 18.25), c(2017, 2000, 1950, 1850))
interpDates(interpDates.input)

#4 dated intervals in a core with slices 1-10 = 0.5cm, and 11-20 = 1.0cm
interpDates.input <- cbind(c(0.25, 4.25, 8.5, 13.5), c(2017, 1980, 1920, 1850))
intervalWidth <- c(rep(0.5,10), rep(1.0,10))
interpDates(interpDates.input, intervalWidth)

shiggo/jezioro documentation built on Sept. 7, 2020, 7:34 p.m.