qmethod (version 1.3.0)

plot.QmethodRes: Q Method: plot for statement z-scores

Description

Takes an object QmethodRes resulting from qmethod and makes a dot-chart with the z-scores for statements and all factors.

Usage

## S3 method for class 'QmethodRes':
plot(x, xlab = 'z-scores', ylab = 'statements', pchlist = NULL,
     colours = NULL, fnames = NULL, legend = TRUE, ...)

Arguments

x

results object returned by qmethod.

xlab

label for x axis. Defaults to 'z-scores'.

ylab

label for y axis. Defaults to 'statements'.

pchlist

array of pch symbols to be used in plotting the points for each factor. Defaults to a pre-defined set of symbols.

colours

array of colours to be used when plotting the points for each perspective. Defaults to a pre-defined set of colours based on the rainbow palette.

fnames

names for factors to be used in the legend. In results where factor names have not been changed (using, e.g. q.fnames) it defaults to 'Factor 1', 'Factor 2', etc.

legend

logical; if FALSE, no legend will be drawn.

...

other arguments for plot.

See Also

dotchart and points.

Examples

data(lipset)
results <- qmethod(lipset[[1]], nfactors = 3, rotation = "varimax")
title <- "Q method z-scores, lipset dataset"
subtitle <- paste0("Three factors, PCA, varimax. Printed on ",
                  Sys.Date())
plot(results, main = title, sub = subtitle)