This tutorial shows you how to categorize a Statistic to a Region. This can be useful if you want to break down the results of a statistic by region, or if you want to use a polygon to set an area of interest.

Follow the built-in Tutorial to load subscriber data, terrain data and site locations, and then follow the instructions here to bring in a KML region file to act as our Area of Interest (AOI).

Your network should now look something like this:

We will now modify the "Coverage by Site" statistic to compute the served subscribers and the covered area inside and outside our AOI polygon. To do this, we first need to make a Categorizer that represents the AOI. We can do this from the "Statistics" subsection of the Start Page. You can reach this by first clicking on Analysis:

Then click on Statistics:

Scroll down this page until you reach the "Categories" section:

Click the Add button to display a list of possible categorical data source types:

Selecting Categories from Regions will show you the properties of the new component:

Set the Name property to "AOI", then set the Region Provider property to point at the AOI regions you set up earlier on. Finally, set the Selected Column property to "Name", as above. This configures the categorizer to use the "Name" attribute of each region from the AOI region provider. As the AOI has a single polygon, this categorizer will have two different values: one for the points inside the AOI, and one for points outside the AOI.

We can verify this using the Data Browser component. Double-click the AOI entry by double-clicking on it, then move the move over the AOI boundary:

We can now modify the statistic to take account of the AOI. Return to the Statistic page and scroll up to the top. Select the "Coverage by Site" statistic from the pull-down list:

Click the Edit Categories button, and then double click the "AOI" entry to add it to the set of selected categorizers:

Click OK to return to the Statistics page, and then click Calculate to generate the table of results:

The table above is grouped by the "AOI" field. The entries in the expanded group show the cover inside the AOI polygon only. The entries in the "Unset" group represent the area cover outside the AOI.

You can learn more about tabular data in Overture here.