Rotate a matrix by 270 degrees counterclockwise (or 90 degree clockwise). Used for adjusting image plotting in R.

Description

Rotate a matrix by 270 degrees counterclockwise (or 90 degree clockwise). Used for adjusting image plotting in R.

Usage

1

Arguments

x

A matrix corresponding to raster or image data.

Value

Returns a matrix

Author(s)

Glenn J Tattersall

References

1. http://www.inside-r.org/packages/cran/RSEIS/docs/mirror.matrix

2. Based on similar code in package <RSEIS>

See Also

flip.matrix mirror.matrix rotate90.matrix rotate180.matrix

Examples

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## The function is currently defined as
function (x) 
{
    mirror.matrix(t(x))
  }
  
  

 flir<-palette.choose("flir")
 set.seed(5)
 par(mfrow=c(1,2),mar=c(1,1,1,1))
 r<-c(1:100,rnorm(1:100)*10,1:100)
 m<-matrix(r,50)
 image(m, axes=FALSE, col=flir)
 box()
 text(.5,.5,"Matrix",col="white")
 mf<-rotate270.matrix(m)
 image(mf,axes=FALSE,col=flir)
 box()
 text(.5,.5,"Rotate270",col="white")
  

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