How to work with Parameters
Parameters are a particular element in Tableau, such as Dimensions, Measures, and Sets. They can be Continuous or Discrete, depending on the data type in use. The two major aspects of Parameters are as follows:
- They are not linked to the data source (they don't rely on any field)
- They only return one value at a time
Let's start with how to create a Parameter.
Creating a Parameter
To create a Parameter, you can use the small arrow next to Dimensions, as highlighted in the following screenshot:
When you create a Parameter, Tableau automatically opens the Edit Parameter window, as illustrated in the following screenshot:
This window is the only place where you can configure a Parameter. At the top, you can specify its Name and add a Comment (visible when you hover over the field). You can also change the Parameter properties by defining the Data type and the Current value (the default value that the Parameter will have when you have created it). For some data...
