OrdinalLogisticBiplot (version 0.4)

plot.ordinal.logistic.biplot: Graphical representation of an Ordinal Logistic Biplot.

Description

This function plots an Ordinal Logistic Biplot. There are parameters related to the way in which the biplot is plotted. All the posible parameters have default values.

Usage

"plot"(x, planex = 1, planey = 2,
AtLeastR2 = 0.01, xlimi = -1.5, xlimu = 1.5, ylimi = -1.5,
ylimu = 1.5, margin = 0, ShowAxis = TRUE, PlotVars = TRUE,
PlotInd = TRUE, LabelVar = TRUE, LabelInd = TRUE, CexInd = NULL,
CexVar = NULL, ColorInd = NULL, ColorVar = NULL, PchInd = NULL,
PchVar = NULL, showIIC = FALSE, iicxi = -1.5, iicxu = 1.5,
legendPlot = FALSE,PlotClus = FALSE,Clusters=NULL,
chulls = TRUE,centers = TRUE,colorCluster = NULL,
ConfidentLevel=NULL,addToExistingPlot=FALSE,...)

Arguments

x

An object of the class ordinal.logistic.biplot.

planex

Dimension for X axis.

planey

Dimension for Y axis.

AtLeastR2

It establishes the cutting value to plot a variable attending to its Nagelkerke pseudo R squared value. A variable is plotted if its pseudo R squared is higher than this value.

xlimi

Minimum value on the x-axis.

xlimu

Maximum value on the x-axis.

ylimi

Minimum value on the y-axis.

ylimu

Maximum value on the y-axis.

margin

This value stablishes the space between the plotted items and the border of the window.

ShowAxis

Should the axis be shown?

PlotVars

Should the variables (items) be plotted?

PlotInd

Should the individuals be plotted?

LabelVar

Should the variable labels be shown?

LabelInd

Should the individual labels be shown?

CexInd

Size of the individual points. It can be an array with the cex information for each row.

CexVar

Size of the category points. It can be an array with the cex information for each variable.

ColorInd

Color of the individual points. It can be an array with the color information for each row.

ColorVar

Color for the variables. It can be an array with the color information for each variable.

PchInd

Symbol for the individuals. It can be an array with the pch information for each row.

PchVar

Symbol for the variables. It could be an array with the pch information for each variable.

showIIC

Boolean parameter to decide if the user wants to see the item information curves for each variable. Default value is FALSE.

iicxi

Lower limit for the X-axis when plotting item information curves.

iicxu

Upper limit for the X-axis when plotting item information curves.

legendPlot

Boolean parameter to show the legend of the plot. Default value is FALSE.

PlotClus

Boolean parameter to show the clusters studied. Default value is FALSE.

Clusters

Variable with the cluster asociated for each item. Default value is NULL.

chulls

Boolean parameter to specify if convex hulls figures will be plotted . Default value is FALSE.

centers

Boolean parameter to plot the centers of each cluster. Default value is NULL.

colorCluster

Color for every cluster. It can be an array with the color information for each cluster. Default value is NULL.

ConfidentLevel

Value between 0 and 1 to avoid extreme values for the plot. Default value is NULL.

addToExistingPlot

Boolean parameter to decide if the plotted items will be added to an existing plot or not. Default value is FALSE.

...

Additional parameters to plot.

Details

The function without parameters plots the ordinal.logistic.biplot object with labels in the original data and default values for colors, symbols and sizes for points and lines. Other values of colors, symbols and sizes can be supplied. A single value applies to all the points but an array with different values can be used to improve the undestanding of the plot.-

See Also

OrdinalLogisticBiplot

Examples

data(LevelSatPhd)
olbo = OrdinalLogisticBiplot(LevelSatPhd,penalization=0.2)
plot(olbo,PlotInd=TRUE,xlimi=-1.5,xlimu=1.5,ylimi=-1.5,ylimu=1.5,
  margin = 0.2, ColorVar = c("red","green","black","blue","yellow"),
  CexVar = c(0.7),showIIC=FALSE)