In Overture, a Statistic is a component that generates a tabular result. New projects in Overture are set up with a number of default statistics such as the "Coverage by Site" statistic. If these are not suitable for your needs, then it is easy to use Overture's flexible statistic configuration system to add a new one. This tutorial shows you how to add and configure a new statistic.

To add a new statistic, you first need to locate the "Statistics" subsection of the Start Page. You can reach this by first clicking on Analysis:

Then click on Statistics:

This will show you the statistics sub page:

Click on the Add button to create a new statistic. This will show you the properties of the new statistic:

Statistics in Overture have two main properties: Data, a set of Statistic Data Providers that provide the input data to the statistic; and Categories, a set of Categorizers that are used to group the results.

Suppose we wish to make a statistic that shows us the served area and the total area of each coding scheme in our network. To add the data providers we need for this statistic, click on the Data property and then click on the ... button to launch the data provider collection editor:

The list of possible data providers is shown on the left; the list of the currently selected providers is shown on the right. Double-click the "Served Area" and "Total Area" entries to move them over to selected set on the right hand side, then click OK to return to the properties of our new statistic.

We now need to add the categorization by coding scheme. Click on the Categories property and then click on the ... button to launch the categories collection editor:

Double-click the "Coding Scheme" entry to add it to the selected set on the right-hand side, then click OK to return to the properties of the new statistic.

The statistic is now ready to run. Click the Back button to return to the Statistics page, and then click the Calculate button to run the new statistic (or you can follow the steps here). When it completes, you will a table will appear that looks something like the one below (this was generated using data from Overture's built-in Tutorial):

The columns in the table correspond to the data providers and categorizers we added to the statistic. Each row in the body of the table represents a distinct value of the "Coding Scheme" data provider, with the corresponding values for the served and total area on the right-hand side. The two columns on the left-hand side represent the total served area and the total area of the Analysis Region. You will notice that the top row of the table has a blank coding scheme; this represents all the uncovered areas in the network (i.e., areas that do not have a coding scheme).

You can learn more about tabular data in Overture here.