plotCuspBifurcation: Display Fitted Data on Control Plane of Cusp Catastrophe.

In cusp: Cusp-Catastrophe Model Fitting Using Maximum Likelihood

Description

Displays fitted data points on the control plane of cusp catastrophe. The function takes a fit object obtained with cusp and generates a plot. Different diagnostic plots may be chosen, or all can be combined in a single plot (the default).

Usage

plotCuspBifurcation(object, xlim = a + c(-0.3, 0.3), ylim = b + c(-0.1,
                 0.1), xlab = expression(alpha), ylab =
                 expression(beta), hue = 0.5 + 0.25 * tanh(object$y),
                 col = hsv(h = hue, s = 1, alpha = 0.4), cex.xlab =
                 1.55, cex.ylab = cex.xlab, axes = TRUE, box = TRUE,
                 add = FALSE, bifurcation.set.fill = gray(0.8),
                 cex.scale = 15, cex = (cex.scale/log(NROW(ab))) *
                 dens/max(dens), pch = 20)

Arguments

object	object returned by cusp
xlim	the x limits (x1, x2) of the plot.
ylim	the y limits of the plot.
xlab	a label for the x axis.
ylab	a label for the x axis.
hue	hue of points (see hsv)
col	color used in plots
cex.xlab, cex.ylab	see par
axes	logical. Should the axes be displayed?
box	logical. Should a box be drawn around the plot?
add	logical. Add to current plot?
bifurcation.set.fill	1-character string. Color used to fill the bifurcation set (see colors).
cex.scale, cex, pch	see par

Details

The default hue of each dot is a function of the height of the cusp surface to which it is closest. This is especially usefull in the bifurcation set. Purple dots are higher than green dots.

The size of the dots depends on the density of dots at its location. The higher the density the larger the dot.

Author(s)

Raoul Grasman

References

See cusp-package

See Also

plot.cusp, cusp3d

Examples

set.seed(20)
# example with regressors
x1 = runif(150)
x2 = runif(150)
z = Vectorize(rcusp)(1, 4*x1-2, 4*x2-1)
data <- data.frame(x1, x2, z)
fit <- cusp(y ~ z, alpha ~ x1+x2, beta ~ x1+x2, data)
## Not run: 
plot(fit, what='bifurcation', box=TRUE, axes=FALSE)

## End(Not run)

Example output

cusp documentation built on May 2, 2019, 6:51 p.m.