plotImageRotated: Plot a rotated image plot

In JBTools: Misc Small Tools and Helper Functions for Other Code of J. Buttlar

Description

plotImageRotated plots a raster/matrix using image() but supplying a rotated version of the matrix, i.e. it plots the matrix as it printed on the screen.

Usage

plotImageRotated(data, col.vals = c(), row.vals = c(), scale = TRUE, 
    col = heat.colors(20), zlim = range(data, na.rm = TRUE), 
    title = "", useRaster = TRUE, xlab = "", ylab = "", ...)

Arguments

data	matrix: data to be plotted
col.vals	numeric vector: coordinate values for the columns of data
row.vals	numeric vector: coordinate values for the rows of data
scale	logical: whether to plot a color scale besides the plot
col	color vector: colors to create the color scale.
zlim	numeric vector (length two): outer limits of the color-scale. Values above or below this range are colored brighter/darker than the maximum/minimum color (see ?plotColorScale).
title	character string: title of the color legend
useRaster	argument passed to image() to decide whether to draw polygons (FALSE) or use a bitmap raster (TRUE).
xlab
ylab
...	further arguments passed to image

Details

The normal image() function always plots a rotated version of a matrix. This function rotates the input to image in a way that the first entry of the matrix (col=1, row=1) shows up at the top-left corner of the plot. In other words the way a matrix would be displayed by printing it directly mapped to the plot.

Value

Nothing is returned.

Author(s)

Jannis v. Buttlar

See Also

image, plotColorScale, the plotting routines of the raster package

JBTools documentation built on May 2, 2019, 5:47 p.m.