CAGE User's Guide

Using Regions

A region is an area that defines locally where to extrapolate before globally extrapolating over the entire table.

For example, consider filling a large table that has twenty breakpoints for each normalizer, by extrapolation. Two problems arise:

• To have meaningful results, you need to set values at a large number of operating points.
• To set values at a large number of operating points takes a long time.

To overcome this problem, you can

1. Define regions within the lookup table.
2. In each region, set the values of some operating points.
3. Click  to fill the table by extrapolation.

Each region is filled by extrapolation in turn. Then the rest of the table is filled by extrapolation. The advantage of using regions is that you can have more meaningful results by setting values for a smaller number of operating points.

Cells are colored

• Yellow if they form part of the extrapolation mask
• Blue if they are part of a region
• Gold if they are part of the extrapolation mask and part of a region

Defining a Region

1. Highlight the rectangle of cells in your table.
2. Click  to define the region.

The cells in the region are colored blue.

Clearing a Region

1. Highlight the rectangle of cells in your table.
2. Click  to clear the region.

Determining a Value at a Specific Operating Point

Multimodel Tradeoffs