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plot.matrix

Visualizes a matrix object plainly as heatmap. It provides a

single S3 function plot for matrices,
function assignColors which assigns a specific color to each value of a vector, and
specific functions for loadings, correlation and p-values matrices.

View the vignette on GitHub or after installing with

library("plot.matrix")
vignette("plot.matrix")

Installation

From CRAN

install.packages("plot.matrix")

From github

Note that from github you install the current development version.

library("devtools")
install_github("sigbertklinke/plot.matrix")

Examples

`plot.matrix`

# you may need to adjust the margin sizes
library("plot.matrix")
par(mar=c(5.1, 4.1, 4.1, 4.1)) # default c(5.1, 4.1, 4.1, 2.1)

# numeric matrix
x <- matrix(runif(50), nrow=10)
plot(x)
plot(x, key=NULL)
plot(x, key=list(cex.axis=0.5, tick=FALSE))
plot(x, digits=3)
plot(x, breaks=c(0,1), digits=3, cex=0.6)

# logical matrix
m <- matrix(runif(50)<0.5, nrow=10)
plot(m)
plot(m, key=NULL, digits=1)

# character matrix
s <- matrix(sample(letters[1:10], 50, replace=TRUE), nrow=10)
plot(s)
plot(s, digits=10)
plot(s, digits=10, col=heat.colors(5), breaks=letters[1:5])

`plot.loadings`

# factor analysis
library("psych")
data <- na.omit(bfi[,1:25]))
#
fa1 <- factanal(data, 5)
plot(loadings(fa1))
#
fa2 <- fa(data, 5) # psych::fa
plot(loadings(fa2))

# principal component analysis
library("psych")
data <- na.omit(bfi[,1:25]))
# 
pa <- princomp(data)
plot(loadings(pa), digits=NA) # no numbers
#
pa <- prcomp(data)
ld <- structure(pa$rotation, class="loadings")
plot(ld, digits=NA)

`assignColors`

# numeric vector
assignColors(runif(50))
# logical vector
assignColors(runif(50)<0.5) 
# character vector
assignColors(sample(letters[1:10], 50, replace=TRUE))

History

2021-04-26 Added spacing.key, Rmd-fying help, version 1.6
2020-11-10 Added two examples for using plot results
2020-11-01 Version 1.5.2 cleaned documentation
2020-10-01 Version 1.5.0 added invisible return for plot.matrix
2019-12-06 Version 1.4
2019-12-05 Extended treatment for NAs, sorting for loadings matrices changed
2019-09-16 Math annotation for plot bug(?)
2019-07-09 Added further data sets, gray scale support, text color change
2019-07-03 Added bfi data set, Version 1.2
2019-05-13 Version 1.1
2019-05-10 plot.loadings, error in y-axis labelling
2018-12-20 Vignette, assignColors
2018-12-01 Added examples for tables, extended formatting possibilities
2018-11-27 Version 1.0

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.