The Trellis property settings display the same map chart visualization in the specified number of panels, with a different subset of the data displayed in each panel. Trellis visualizations can help you see similarities and differences between the subsetted categories on each map.
Property setting |
Default value |
Description |
Trellis layer |
Depends on data |
Specifies the layer on which to base the trellis. Only data in the specified layer is split into trellis panels, and all other layers are rendered identically in all panels.
The specified trellis layer does not have to be visible to be used.
|
Rows and columns |
Selected
|
Splits the map chart visualization into different panels for all categories in the selected column or hierarchy. The number of values in the specified column or hierarchy controls the number of panels that are displayed in each row, column, or page, respectively.
- Rows: A row with trellis panels is created for each value in the selected column or hierarchy.
- Columns: A column with trellis panels is created for each value in the selected column or hierarchy.
- Pages: A new page with trellis panels is created for each value in the selected column or hierarchy. Scroll down in the map chart visualization to see the next page. The application automatically adds pages to accommodate the values in the column or hierarchy selected for the trellis, as necessary. For example, if the data requires 12 panels, and the Max number of rows and columns is 9 (3 by 3), then a second page is added.
|
Panels |
Cleared |
Splits the map chart visualization into different panels for all categories in the selected column or hierarchy, without binding any dimensions to either rows or columns. The number of actual values in the column by which to split does not control the number of displayed rows or columns.
|
Manual layout |
Cleared |
Select to specify manually the number of rows and columns that should be visible without scrolling. If the check box is cleared, the application automatically specifies the number of rows and columns. |
Max number of rows |
2 |
Specifies the maximum number of row panels that are visible on each page.
|
Max number of columns |
2 |
Specifies the maximum number of row panels that are visible on each page. |
Example of Trellis
This image shows an example of a map chart visualization of Swedish counties and county (län) seats. A calculated column identifying those cities with a population over 200,000 people has been added to the population data, and the trellis layer is set to show panels split into two maps, displaying cities with smaller populations on the left and larger populations on the right. The manual layout shows a maximum of one row and three columns. (This data table has only two columns to display.)
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