sna (version 2.3-2)

plot.sociomatrix: Plot Matrices Using a Color/Intensity Grid

Description

Plots a matrix, m, associating the magnitude of the i,jth cell of m with the color of the i,jth cell of an nrow(m) by ncol(m) grid.

Usage

"plot"(x, labels=NULL, drawlab=TRUE, diaglab=TRUE,  drawlines=TRUE, xlab=NULL, ylab=NULL, cex.lab=1, ...)
sociomatrixplot(x, labels=NULL, drawlab=TRUE, diaglab=TRUE,  drawlines=TRUE, xlab=NULL, ylab=NULL, cex.lab=1, ...)

Arguments

x

an input graph.

labels

a list containing the vectors of row and column labels (respectively); defaults to numerical labels.

drawlab

logical; add row/column labels to the plot?

diaglab

logical; label the diagonal?

drawlines

logical; draw lines to mark cell boundaries?

xlab

x axis label.

ylab

y axis label.

cex.lab

optional expansion factor for labels.

...

additional arguments to plot.

Value

None

Details

plot.sociomatrix is particularly valuable for examining large adjacency matrices, whose structure can be non-obvious otherwise. sociomatrixplot is an alias to plot.sociomatrix, and may eventually supersede it.

See Also

plot.blockmodel

Examples

#Plot a small adjacency matrix
plot.sociomatrix(rgraph(5))

#Plot a much larger one
plot.sociomatrix(rgraph(100),drawlab=FALSE,diaglab=FALSE)