calc_TL.SAR.fit: Estimation of the equivalent dose (ED) value for the SAR...

In dstreble/TLdating: Tools for Thermoluminescence Dating

Description

Internal function called by analyse_TL.SAR.
This function estimates the equivalent dose (ED) based on a doses vector and a Lx/Tx vector provided.
See details for more information.

Usage

calc_TL.SAR.fit(doses, LnTn, LnTn.error, LxTx, LxTx.error,
  fitting.parameters = list(fit.method = "LIN", fit.weighted = FALSE))

Arguments

doses	numeric (required): doses vector
LnTn	numeric (required): Ln/Tn.
LnTn.error	numeric (required): Error for the Ln/Tn.
LxTx	numeric (required): Lx/Tx vector
LxTx.error	numeric (required): Error for the Lx/Tx vector
fitting.parameters	list (with default): fitting parameters. See details.

Details

This function estimates the equivalent dose based on the doses vector, Ln/Tn and the Lx/Tx matrix provided.
Different fitting methods are available (LIN, EXP, EXP+LIN or EXP+EXP). Moreover, the fitting can be weigthed or not.

Fitting parameters
The fitting parameters are:

method

character: Fitting method (LIN, EXP, EXP+LIN or EXP+EXP).

fit.weighted

logical: If the fitting is weighted or not.

fit.use.slope

logical: If the slope of the Q growth curve is reused for the sublinearity correction.

fit.rDoses.min

numeric: Lowest regenerative dose used for the fitting.

fit.rDoses.max

numeric: Highest regenerative dose used for the fitting.

Warning: This function is an internal function and should not be used except for development purposes. Internal functions can be heavily modified and even renamed or removed in new version of the package.

Value

The function provides an TLum.Results object containing:

GC

list: fitting curve.

Q

numeric: equivalent dose estimation

Q.error

numeric: Error for the equivalent dose estimation

summary

list: parameters of the fitting result.

Author(s)

David Strebler, University of Cologne (Germany).

See Also

analyse_TL.SAR.

dstreble/TLdating documentation built on May 15, 2019, 4:50 p.m.