Correspondence Analysis Plots
The Plots dialog box allows you to specify which plots are produced.
Scatterplots. Produces a matrix of all pairwise plots of the dimensions. Available scatterplots include:
- Biplot. Produces a matrix of joint plots of the row and column points. If principal normalization is selected, the biplot is not available.
- Row points. Produces a matrix of plots of the row points.
- Column points. Produces a matrix of plots of the column points.
Optionally, you can specify how many value label characters to use when labeling the points. This value must be a non-negative integer less than or equal to 20.
Line Plots. Produces a plot for every dimension of the selected variable. Available line plots include:
- Transformed row categories. Produces a plot of the original row category values against their corresponding row scores.
- Transformed column categories. Produces a plot of the original column category values against their corresponding column scores.
Optionally, you can specify how many value label characters to use when labeling the category axis. This value must be a non-negative integer less than or equal to 20.
Plot Dimensions. Allows you to control the dimensions displayed in the output.
- Display all dimensions in the solution. All dimensions in the solution are displayed in a scatterplot matrix.
- Restrict the number of dimensions. The displayed dimensions are restricted to plotted pairs. If you restrict the dimensions, you must select the lowest and highest dimensions to be plotted. The lowest dimension can range from 1 to the number of dimensions in the solution minus 1, and is plotted against higher dimensions. The highest dimension value can range from 2 to the number of dimensions in the solution, and indicates the highest dimension to be used in plotting the dimension pairs. This specification applies to all requested multidimensional plots.
To Create Plots in Correspondence Analysis
This feature requires the Categories option.
- From the menus choose:
- In the Correspondence Analysis dialog box, click Plots.