# Categorical Principal Components Analysis Category Plots

The Category Plots dialog box allows you to specify the types of plots you want and the variables for which plots will be produced.

**Category Plots.** For each variable selected, a plot of the
centroid and vector coordinates is plotted. For variables with multiple
nominal scaling levels, categories are in the centroids of the objects
in the particular categories. For all other scaling levels, categories
are on a vector through the origin.

**Joint Category Plots.** This is a single plot of the centroid
and vector coordinates of each selected variable.

**Transformation Plots.** Displays a plot of the optimal category
quantifications versus the category indicators. You can specify the
number of dimensions for variables with multiple nominal scaling levels;
one plot will be generated for each dimension. You can also choose
to display residual plots for each variable selected.

**Project Centroids Of.** You may choose a variable and project
its centroids onto selected variables. Variables with multiple nominal
scaling levels cannot be selected to project on. When this plot is
requested, a table with the coordinates of the projected centroids
is also displayed.

To Obtain Category Plots in CATPCA

- Select the dependent and independent variables in the Categorical Principal Components dialog box.
- In the Plots group, click Category.
- Select the types of plots and variables for which plots will be produced.
- Click Continue.