The treemap shows proportions on a treemap layouts. (see below example live).
The treemap has two rendering modes, they are
- Render row by row
- Render by grouping data
When rendering row by row
Each row in the SharePoint list/document library is a rectangle on the graph. The size of the rectangle can represent a numeric property of the item.
When rendering by grouping data
Each unique value in the grouped value is a rectangle . The size of the rectangle can represent the Minimum/Maximum/Average/Median/Sum/First/Last/Row Count/Unique value of this unique value.
By design, the rectangle graph cannot represent negative numbers. In case of negative number in the data, the visualizer will convert to its absolute number. For example, the value -100 will be converted to 100, then graphed.