2.2
Dynamically Changing Visualizations
Visualizations in a Power BI report use data from the Power BI model in two ways. First, values from columns are used to populate visual elements like the axis in a column chart, row labels in a table visual, or selection items in a slicer. We use the term label to generically refer to these elements. Second, aggregated data from the model, typically in the form of DAX measures, provides the results that a visual represents. While it is not visually clear, the buckets or wells that are used to bind a visual to data fields distinguish between these two types of data usage. For instance, the buckets Axis and Legend demand label data and the Values bucket needs aggregated data:
Figure 2.2.1: Field buckets ...
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