LinScale {DescTools} R Documentation

## Linear Scaling

### Description

This will scale the numeric vector x linearly from an old scale between low and high to a new one between newlow and newhigh.

### Usage

LinScale(x, low = NULL, high = NULL, newlow = 0, newhigh = 1)


### Arguments

 x a numeric matrix(like object). low numeric. The minimum value of the scale, defaults to min(x). This is calculated columnwise by default; defined low or high arguments will be recycled if necessary. high numeric. The maximum value of the scale, defaults to max(x). This is calculated columnwise by default; when a maxval is entered, it will be recycled. newlow numeric. The minimum value of the new scale, defaults to 0, resulting in a 0-1 scale for x. newlow is recycled if necessary. newhigh numeric. The maximum value of the scale, defaults to 1. newhigh is recycled if necessary.

### Details

Hmm, hardly worth coding...

### Value

The centered and scaled matrix. The numeric centering and scalings used (if any) are returned as attributes "scaled:center" and "scaled:scale"

### Author(s)

Andri Signorell <andri@signorell.net>

scale, RobScale, sweep

### Examples

# transform the temperature from Celsius to Fahrenheit
LinScale(d.pizza[1:20, "temperature"], 0, 100, -17.8, 37.8 )

# and the price from Dollar to Euro
LinScale(d.pizza[1:20, "price"], 0, 1, 0, 0.76)

# together
LinScale(d.pizza[1:20, c("temperature", "price")],
0, c(100, 1), c(-17.8, 0), c(37.8, 0.76) )

## Not run:
par(mfrow=c(3,1), mar=c(0,5,0,3), oma=c(5,0,5,0))
plot(LinScale(d.frm[,1]), ylim=c(-2,2), xaxt="n", ylab="LinScale")
plot(RobScale(d.frm[,1]), ylim=c(-2,2), xaxt="n", ylab="RobScale")
plot(scale(d.frm[,1]), ylim=c(-2,2), ylab="scale")
title("Compare scales", outer = TRUE)

## End(Not run)


[Package DescTools version 0.99.54 Index]