ID Variables

Use this field to specify one or more variables whose values that can, either singly or in combination, provide a unique identifier for each row.

For Relationship Matrix, these variables are used to generate names for the distance variables and are copied to the output data set. If the form of the input data is already a distance matrix, these ID variables are used to label the cluster dendrogram.

For Cross Evaluation, these variables are used to generate an ID variable for each cross and is copied to the output data set.

The maximum length of the combined Prefix + ID variables is 32 characters minus the number of rows in the data set.

If no variable is specified, the row number is used to create the ID.

To Specify One or More Input ID Variables:

Specify an input data set.

All of the variables in the input data set are displayed in the Available Variables field.

Examine the list of available variables.

Highlight one or more variables. To highlight multiple variables at once, hold down Ctrl while left-clicking on them.

Click to add the highlighted variable(s) to the ID Variables field, as shown below: