Introduction to LOD expressions and parameters
LOD expressions and parameters are some of the most powerful yet least understood elements for newer Tableau users. We will go a little deeper into these concepts in future chapters but want to make sure you are introduced to the very basics in this section.
LOD expressions
LOD expressions show up as standard calculations and can be included as part of a standard calculation. The purpose of LOD calculations is to create a measurement at a defined level of aggregation. When creating most calculations, the LOD is dependent on what is in the workbook, defined details, or filters. There are three LOD calculations (Fixed, Include, and Exclude) to help independently define the details seen on the visualization that we will look at in the following list. Please review the Order of operations section to see how filters and other pieces impact your visualization.
- Fixed—This is a LOD expression that looks at the referenced dimension...
