getNlsParameterDefaults {mixlow}R Documentation

Generate a data frame of default values for nonlinear lest-squares analysis

Description

Convenience function to generate default values for input to the doNls function. Defaults are indicated by NaN values. Users can manually change these values once the data frame is generated.

Usage

getNlsParameterDefaults(trays)

Arguments

trays A vector of tray names that can be generated by the getTrays function.

Details

See doNlme for a description of the parameters. The data frame contains names:

param.g
gamma
param.g.std
Standard deviation of gamma
param.p
psi
param.p.std
Standard deviation of psi
param.lambda
lambda

See help for functions doNls and doNlme for information on parameters. getNlsParameterDefaults sets all parameter values to NaN, instructing the doNls function to use default values. After generating the data frame, NaNs can be set to numerical values as desired. All parameter values except lambda should be in log scale.

Value

A data frame containing NaN values for all parameter estimates.

Author(s)

John Boik jcboik@stanford.edu

See Also

doNls

Examples

# mixlowData data object is obtained using the prepareData function
data(mixlowData)
trays <- getTrays(mixlowData)
parameterDefaults <- getNlsParameterDefaults(trays=trays[1:9])
parameterDefaults["t2d1","param.lambda"] <- .05


[Package mixlow version 0.01.1 Index]