Rotate an image (or matrix) 270 degrees.

Description

Rotate an image (or matrix) 270 degrees.

Usage

rotate270(img)

Arguments

Value

An image of equal dimensionality to the input, rotated 270 degrees.

Author(s)

Allison Irvine

See Also

displayImg

Examples

	data(pirate);
	#perform histogram equalization
	img = histeq(img);
	#convert to grayscale
	img = rowSums(img, dims=2)/3;
	#rotate image 270 degrees so it appears upright
	img = rotate270(img);
	#set colors
	levels = seq(0,1,.0000001);
	g = gray(levels);
	image(img,col=g)

Results

R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

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> library(IM)
Loading required package: png
Loading required package: jpeg
Loading required package: bmp
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/IM/rotate270.Rd_%03d_medium.png", width=480, height=480)
> ### Name: rotate270
> ### Title: Rotate an image (or matrix) 270 degrees.
> ### Aliases: rotate270 rotate270-methods rotate270,Numbers-method
> ### Keywords: misc
> 
> ### ** Examples
> 
> 	data(pirate);
> 	#perform histogram equalization
> 	img = histeq(img);
> 	#convert to grayscale
> 	img = rowSums(img, dims=2)/3;
> 	#rotate image 270 degrees so it appears upright
> 	img = rotate270(img);
> 	#set colors
> 	levels = seq(0,1,.0000001);
> 	g = gray(levels);
> 	image(img,col=g)
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>