plot.minLambda {mrbsizeR}

Plot of objective function for finding appropriate smoothing parameters.

Description

The objective function G is plotted on a grid. The minimum is indicated with a white point.

Usage

## S3 method for class 'minLambda'
plot(x, ...)

Arguments

x

Output of function MinLambda.

...

Further graphical parameters can be passed.

Details

When minimizing over 2 \lambda's, one plot is generated: (\lambda_2 vs \lambda_3). With 3 \lambda's, 3 plots are generated: \lambda_2 vs. \lambda_3, \lambda_2 vs. \lambda_4 and \lambda_3 vs. \lambda_4.

Value

Plot of G on a grid.

Examples

set.seed(987)
sampleData <- matrix(stats::rnorm(100), nrow = 10)
sampleData[4:6, 6:8] <- sampleData[4:6, 6:8] + 5

# Minimization of two lambdas on a 20-by-20-grid
minLamOut <- MinLambda(Xmu = c(sampleData), mm = 10, nn = 10, 
                        nGrid = 20, nLambda = 3)

# Plot of the objective function
plot(x = minLamOut)