Multidimensional Scaling Restrictions
The Restrictions dialog box allows you to place restrictions on the common space.
Restrictions on Common Space. Specify the type of restriction you want.
- No restrictions. No restrictions are placed on the common space.
- Some coordinates fixed. The first variable selected contains the coordinates of the objects on the first dimension, the second variable corresponds to coordinates on the second dimension, and so on. A missing value indicates that a coordinate on a dimension is free. The number of variables selected must equal the maximum number of dimensions requested.
- Linear combination of independent variables. The common space is restricted to be a linear combination of the variables selected.
Restriction Variables. Select the variables that define the restrictions on the common space. If you specified a linear combination, you specify an interval, nominal, ordinal, or spline transformation for the restriction variables. In either case, the number of cases for each variable must equal the number of objects.
To Specify Multidimensional Scaling Restrictions
This feature requires the Categories option.
- From the
menus choose:
- Make the appropriate selections in the Data Format dialog box and click Define.
- In the Multidimensional Scaling dialog box, click Restrictions.