I have called them Evenly distributed scaffold values and Kernel but you can call them anything that makes more sense to you. There are two parts to how this "parameter" works: A range filter on a continuous (green) date or number pill that keeps Null values. From the Data pane, drag a measure to the view. The violin plot is very powerful as it displays the range of a dataset and the probability density of a value in the same view. Click OK to save your changes and return to the view. A duplicate can be made by holding the CTRL key and dragging the pill into the same shelf. I challenge you to attempt to use a parameter within a moving average table calculation next! Creating parameters in Tableau begins the same way as creating a calculated field. 2. The individual kernels are shown in red and the kernel density estimate is shown by the thicker blue line. What are the advanced chart types in tableau? Parameters are constant workbook variables. How to improve appearance to convey meaning more precisely in tableau? To do this, call the parameter and write the logic for each date level aggregation to extract the specific date_part. Step 1: Create Tableau Calculated Field Go to your Tableau worksheet and visit Analysis > Create Calculated Field. You can't create a calculated field that contains a multivalued parameterthose with a multiselect drop-down control. Let's go through it. Create the parameter. In the Actions dialog box, specify a meaningful name for the action. For details on creating calculated fields, see Create a calculated field. Right-click (control-click on Mac) a number in the view and select Format. Next, right click on the Select Date Aggregation parameter and select Show Parameter. Right click anywhere in the data pane along the left and choose Create > Tableau Parameter. When not crunching numbers you can find him either playing some version of hockey or climbing a mountain. Tweak some of the settings for the action to adjust the behavior as needed. The newly created parameter will be listed on the Parameters section (i.e., the bottom of the Data pane). This probability density is usually smoothed by what is called a kernel density estimator.