Countable Dimensions

A countable dimension’s elements can be counted by the system.

Countable dimensions are typically used to create sum metrics, which return the count, or sum, of all the elements of the dimension. You can define countable dimensions to count instances such as reservation bookings or product orders. For example, you could define the countable dimension Orders whose elements (log entries corresponding to orders from your online store) could be counted. If you want to show a count of orders within a visualization, you would define the Orders sum metric, which can be evaluated over a dimension or have filters applied to it.

Countable dimensions can be parents of other dimensions or children of other countable dimensions.

Countable dimensions are defined by the following parameters:

This example illustrates the definition of a countable dimension using event data collected from website traffic. The countable dimension counts the web campaign events within a given session. The assumption is that all email campaign resources are requested from the web server with “email=” as part of cs-uri-query. In the example, the number of times that the visitor responds to an email campaign during a given session is of interest, not the actual value of the cs-uri-query(email) field.

This example also illustrates the definition of a countable dimension using event data collected from website traffic, but it has a defined Key parameter. The Session countable dimension uses the x-session-key field as its key. (The x-session-key field is the output of the Sessionize transformation and has a unique value for each session.) Every unique combination of an element of the Visitor dimension (the parent) and the x-session-key field is an element of the Session dimension.

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