sorvi (version 0.4.05)

PlotMatrix: Visualize a matrix with one or two-way color scale. TODO: one-way color scale

Description

This function is used for fast investigation of matrix objects; standard visualization choices are made automatically; fast and easy-to-use but does not necessarily provide optimal visualization.

Usage

PlotMatrix(mat, type = "twoway", midpoint = 0,
    palette = NULL, colors = NULL, col.breaks = NULL,
    interval = 0.1, plot.axes = "both", row.tick = 1,
    col.tick = 1, cex.xlab = 0.9, cex.ylab = 0.9,
    xlab = NULL, ylab = NULL, limit.trunc = 0,
    mar = c(5, 4, 4, 2), ...)

Arguments

mat

matrix

type

String. Specifies visualization type. Options: "oneway" (color scale ranges from white to dark red; the color can be changed if needed); "twoway" (color scale ranges from dark blue through white to dark red; colors can be changed if needed)

midpoint

middle point for the color plot: smaller values are shown with blue, larger are shown with red in type = "twoway"

palette

Optional. Color palette.

colors

Optional. Colors.

col.breaks

breakpoints for the color palette

interval

interval for palette color switches

plot.axes

String. Indicates whether to plot x-axis ("x"), y-axis ("y"), or both ("both").

row.tick

interval for plotting row axis texts

col.tick

interval for plotting column axis texts

cex.xlab

use this to specify distinct font size for the x axis

cex.ylab

use this to specify distinct font size for the y axis

xlab

optional x axis labels

ylab

optional y axis labels

limit.trunc

color scale limit breakpoint

mar

image margins

...

optional parameters to be passed to function 'image', see help(image) for further details

Value

• A list with the color palette (colors), color breakpoints (breaks), and palette function (palette.function)

References

See citation("sorvi")

Examples

# mat <- rbind(c(1,2,3,4,5), c(1, 3, 1), c(4,2,2)); PlotMatrix(mat, "twoway", midpoint = 3)