temp.control {modTempEff}R Documentation

Auxiliary function to control the fit of the temperature effect

Description

Specifies some inputs to fit the segmented effect of temperature, including starting values for the threshold value, the maximum lags for cold and heat, and the `apparent' dimension of the B-spline bases for cold and heat.

Usage

temp.control(psi, L = c(60, 60), ndx = round(L/3), heat.power = 1)

Arguments

psi Numeric to provide the starting value of the one or two breakpoint of the segmented relationship.
L A numerical two-length vector to specify how many lags have to be considered to assess the effect of cold and heat.
ndx The apparent dimension of the two B-spline bases for the DL curves of cold and heat.
heat.power Currently not implemented.

Details

This auxiliary function is employed to specify the starting value for the one or two breakpoints, the maximum lags for cold and heat effect, and the `apparent' dimension, i.e. the number of columns, of the B-spline bases to fit the DL curves of cold and heat.

Value

A list with the arguments as components to be used by 'tempeff' or 'tempeff.fit'.

Author(s)

Vito Muggeo

References

Muggeo, V.M.R. (2008) Modeling temperature effects on mortality: multiple segmented relationships with common break points Biostatistics 9, 613–620.

See Also

tempeff

Examples

## Not run: 
# Evaluate temperature effects up to 45 lags and a single breakpoint; 
# use 20 as starting value
temp.control(psi=20,L=c(45,45))
## End(Not run)

[Package modTempEff version 1.1 Index]