divideImage: divideImage

In CulturalAnalytics: Functions for statistical analysis and plotting of image properties

Description

Divide an image into a number of smaller images

Usage

divideImage(image, columns, rows)

Arguments

image	A raster image
columns	The number of columns to divide the image into.
rows	The number of rows to divide the image into.

Details

It can be useful to examine sections of an image separately. This function allows images to be broken down for such analysis. Note that if the image cannot be divided exactly into the number of rows and columns specified, some images may have different dimensions from others.

Value

A matrix of raster images. Elements of the matrix must be accessed using [[.

Examples

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])
tiles<-divideImage(img, 3, 3)
t13<-tiles[[1,3]]

CulturalAnalytics documentation built on May 2, 2019, 5:24 p.m.