sdRgb: Calculate the standard deviation of RGB colour values.

Description

This function calculates the standard deviation of the hue, saturation and value of colorspace library RGB objects.

Usage

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sdRgb(rgbs)

Arguments

rgbs

colorspace library RGB valuess.

Value

A vector with named values for the R, G and B standard deviations.

Examples

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library(CulturalAnalytics)
library(jpeg)
imgdir<-paste(system.file(package = "CulturalAnalytics"), "images", sep = "/")
imgs<-paste(imgdir, dir(path = imgdir, pattern = ".jpg"), sep = "/")
img<-readJPEG(imgs[1])
rgbs<-imageToRgb(img)
sdrgb<-sdRgb(rgbs)

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