QCA (version 2.6)

Xplot: Display the distribution of points for a single condition

Description

This function creates a plot for a single vector of numerical values, arranging them horizontally (on the X axis) from minimum to maximum.

Usage

Xplot(x, jitter = FALSE, at = NULL, ...)

Arguments

x

A numeric vector.

jitter

Logical, vertically jitter the points.

at

The points at which tick-marks are to be drawn. Non-finite (infinite, NaN or NA) values are omitted. By default (when NULL) tickmark locations are automatically computed, see the help file for ?axis.

...

Other graphical parameters from par

Details

This is a special type of (scatter)plot, with points being arranged only on the horizontal axis (it has no vertical axis). Useful when inspecting if points are grouped into naturally occuring clusters, mainly for crisp calibration purposes.

The argument ... is used to pass various graphical parameters for the various plotting functions used.

The points have a default cex (character expansion) value of 1, and a default pch value of 1 (empty points), which can be modified accordingly (for example with value 21 for filled points). When pch = 21, the color for the margins of the points can be specified via the argument col, while the argument bg will determine the fill color of the points.

The axis labels have a default cex.axis value of 0.8, which affects both the tickmarks labels and the axis labels.

When jittering the points, default values of 0.5 are used for the parameters factor and amount, on the horizontal axis.

See Also

par, text, jitter

Examples

# NOT RUN {
# Lipset's raw data
data(LR)

# plot the DEV (level of developent) causal condition
Xplot(LR$DEV)

# jitter the points vertically
Xplot(LR$DEV, jitter = TRUE)

# make the x axis large enough to accommodate all values
Xplot(LR$DEV, jitter = TRUE, at = pretty(LR$DEV))

# clip plotting between the range of min and max
Xplot(LR$DEV, jitter = TRUE, at = range(LR$DEV))
# }