Popup Titles in Text Combination Graph and Numeric Combination Graph
In the Text Combination Graph and Numeric Combination Graph, the first (top level) text column of Items, serves as an indexer for the x-axis instead of as a categoric breakdown column.
This is different from the Time Combination Graph, where the x-axis indexer is the time dimension, which is created through the time series transformation.
Therefore, in Text Combination and Numeric Combination, the Details popup will never show a category title if the Items setting has only one column.
Category titles will appear in the Details popup based on the second text column added to Items or added to Rows or Columns. When a second text column is added to Items, there is also a requirement to switch off Single Series on Visuals where applicable depending on the type of visualization (e.g., line).
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