Data blending, which we examined in detail in Chapter 2, Working with Data in Tableau, is a powerful feature in which Tableau can combine two different data sources in a single view. In order for a blend to work, Tableau requires at least one dimension in each data set that can be linked together (either automatically, when the name and data type matches, or manually, when you define a relationship via the menu Data | Edit Relationships). Sometimes, you may not have the required dimensions in one of the datasets, or the values may not match. You can use calculated fields as dimensions for blending.
In addition to the renter data we've been using, let's say we have another data source that gives us the ...
