scaleTemplate {adept}

Templates Scaling

Description

Compute a list of scaled templates via linear interpolation.

Usage

scaleTemplate(template, template.vl)

Arguments

template

A list of numeric vectors. Each vector represents a distinct template.

template.vl

A numeric vector. A grid of vector lengths that each element of template is to be linearly interpolated into.

Value

A list of lists of numeric vectors. Each element of the returned list is a list of templates scaled according to a particular vector length. The number of elements in the returned list equals the length of template.vl.

Examples

## Construct a list of two templates
template <- list(sin(seq(0, 2 * pi, length.out = 100)),
                 cos(seq(0, 2 * pi, length.out = 100)))
## A grid of vector lengths to which each of templates is scaled into
template.vl <- c(50, 100, 200)
## Compute list of rescaled templates
out <- scaleTemplate(template, template.vl)

## Plot 1st template after rescaling to three values of vector length
par(mfrow = c(2, 1), cex = 0.7)
plot(out[[3]][[1]], type = "l",
     main = "Pattern: sin([0, 2 * pi]) rescaled according to different scales",
     ylab = "Pattern", xlab = "Index")
lines(out[[2]][[1]], col = "red")
lines(out[[1]][[1]], col = "blue")

## Plot 2nd template after rescaling to three values of vector length
plot(out[[3]][[2]], type = "l",
     main = "Pattern: cos([0, 2 * pi]) rescaled according to different scales",
     ylab = "Pattern", xlab = "Index")
lines(out[[2]][[2]], col = "red")
lines(out[[1]][[2]], col = "blue")