Snapshot Tree Maps

The Treemaps page in X25 Analytics employs enhanced interactive event and location tree map charts to visually represent a snapshot. A tree map of events is displayed on the left and a tree map of locations is displayed on the right. Selecting locations highlights the events in those locations and vice versa. 

The color of a cell (ranging from orange to green for events and light blue to dark blue for locations) corresponds to the seat or room utilization percentage.

Image: Tree map example

In the example above, the user has selected a group of locations in the 21-40 capacity group on the right. The highlighted areas on the left show the events in those locations.

Tree Map Basics

Tree maps show the largest data of whatever type in the top left moving down and right to the smallest data of that type in the bottom right. This rule applies to the map as a whole and to the individual groupings of data within the map. In this way, tree maps give you a quick visual representation of data, even before moving into the detail.

Image: location tree map example with largest and smallest portions highlighted

In this map, each small square is a location that is sized proportionally based on its capacity, and the locations are grouped (shown by thick black borders in this example) by capacity. The largest location grouping (21 - 40 capacity) in the upper left of the map contains 175 locations with a total capacity of 5376. The smallest location grouping (101-120 capacity) in the bottom right of the map contains one (1) location with a total capacity of 110.

Interacting With Tree Maps

You can interact with tree maps in several different ways.

Rollover and Selection

Moving your cursor over any of the cells in the tree map reveals details about each event or location that are displayed in the box on the bottom right. It also displays information about the group to which that cell belongs. (See Grouping and Sizing below.)

The color of a cell (ranging from orange to green for events and light blue to dark blue for locations) corresponds to the seat or location utilization percentage displayed in this box.

If you click a cell, it remains highlighted and also highlights any corresponding events/locations in the opposite chart. Clicking an event highlights its assigned location while clicking a location highlights all the events it is assigned to. Select multiple cells by dragging your cursor or double-clicking.

You can invert the current selection by pressing shift-e (for events) or shift-l (for locations). This deselects all currently highlighted cells of one type and highlights the rest. The highlighted selection on the opposite tree map changes correspondingly.

To zoom in on the current selection, press shift-z (for events) or shift-x (for locations). The scope of the tree map will zoom in to focus on the highlighted cells. Press this combination again to zoom out.

Grouping and Sizing

The objects in each tree map can be divided into groups by criteria like headcount, capacity, organization, and building. When a cell is highlighted (see Rollover and Selection above) information about its group appears in the space above the tree map, including the name of the group and the number of cells it contains.

Select from the Sorting drop-down box above each chart to change the grouping. You can choose from:

  • All (no grouping)
  • Organization
  • College
  • Headcount
  • Breakpoints
  • Meeting Pattern
  • Instructor

The cells which are currently highlighted will remain highlighted as the cells are rearranged. To turn off the animation when this happens, deselect the Motion checkbox.

By default, all groups and cells are sized proportionally. This helps you see which groups have the most members, which events have the largest headcount, and which locations have the highest capacity–but it can also make it difficult to see the smallest cells. You can force each group and/or cell to have the same size as its neighbors by clicking the Sizing drop-down.

To Download the Events in a Tree Map as a Spreadsheet

  1. Use the methods above to select your desired events.
  2. Click the Generate List button to view details of the selected events in a format similar to the Tables page.
  3. Click the Export button.
  4. Open the downloaded file in your preferred spreadsheet editor (such as Excel).
  5. Click File...Save As (or the equivalent in your spreadsheet editor) and save the file in a new format.