# Multidimensional Unfolding Restrictions

The Restrictions dialog box allows you to place restrictions on the common space.

**Restrictions on Common
Space.** You can choose to fix the coordinates of row and/or
column objects in the common space.

**Row/Column Restriction
Variables.** Choose the file containing the restrictions
and select the variables that define the restrictions on the common
space. 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. The
number of cases for each variable must equal the number of objects.

To Specify Multidimensional Unfolding Restrictions

This feature requires the Categories option.

- From the menus choose:
- In the Multidimensional Unfolding dialog box, click Restrictions.