IsoplotR (version 0.17)

set.zeta: Calculate the zeta calibration coefficient for fission track dating

Description

Determines the zeta calibration constant of a fission track dataset (EDM or LA-ICP-MS) given its true age and analytical uncertainty.

Usage

set.zeta(x, tst = c(0, 0), exterr = TRUE, update = TRUE, sigdig = 2)

Arguments

x

an object of class fissiontracks

tst

a two-element vector with the true age and its standard error

exterr

logical flag indicating whether the external uncertainties associated with the age standard or the dosimeter glass (for the EDM) should be accounted for when propagating the uncertainty of the zeta calibration constant.

update

logical flag indicating whether the function should return an updated version of the input data, or simply return a two-element vector with the calibration constant and its standard error.

sigdig

number of significant digits

Value

an object of class fissiontracks with an updated x$zeta value

References

Vermeesch, P., 2017. Statistics for LA-ICP-MS based fission track dating. Chemical Geology, 456, pp.19-27.

Examples

# NOT RUN {
data(examples)
print(examples$FT1$zeta)
FT <- set.zeta(examples$FT1,tst=c(250,5))
print(FT$zeta)
# }