Reassigning Attribute Ratings 

Use

Recall that ratings allow you to organize related numeric values within a single named attribute, and that ratings are defined by selecting the applicable Ratingscheck boxes in the Attribute Detail tab. (for more information about ratings, see Attribute Ratings).

Sometimes you may need to change the ratings of a numeric attribute, but if you have already assigned numeric values to the existing ratings, you cannot simply check and uncheck different ratings checkboxes, because that would not change the rating assigned to each set of existing numeric values. In these cases, the solution is to reassign ratings for the attribute.

When you use the Reassign Ratings command to reassign the ratings of a numeric attribute, MDM opens the Reassign Ratings dialog, and then reassigns the ratings based on the new rating you specify for each existing rating, as follows:

·        Makes the appropriate changes to the settings of the Ratings check boxes for the attribute.

·        Reassigns from the old to the new rating each underlying set of numeric values.

Using the Reassign Ratings command is like playing musical chairs.

Procedure

To reassign one or more ratings for a numeric attribute:

       1.      In the Attributes pane, select the numeric attribute whose ratings you want to reassign.

       2.      Right-click on the attribute and choose Reassign Ratings from the context menu, or choose Attributes ® Reassign Ratings from the main menu to open the Reassign Ratings dialog shown in the figure below.

MDM enables the drop-down control for each existing rating and sets each drop-down to the corresponding value for the control.

       3.      For each existing rating that needs to be reassigned, select a new rating from the drop-down control. For example, in the figure above, you can change the Minimumrating to Nominal, and the Maximum rating to Typical.

       4.      Click OK when your are done to close the Reassign Ratings dialog.

MDM reassigns the ratings for the selected attribute.

Operation	Constraints
Reassign Ratings	·        Must be in Taxonomy mode ·        Attributes pane must have focus ·        Exactly one attribute must be selected ·        The selected attribute must be numeric (but not coupled numeric)

If you want to eliminate a rating to which numeric values have already been assigned, you cannot simply uncheck the rating in the Attribute Detail tab because this would result in data loss. To eliminate the rating, you must first delete the data values that have been assigned to the rating.