Handling a Treemap
A treemap displays hierarchical data as nested rectangles whose size varies according to the associated value.
Treemaps enable to identify trends and make quick comparisons.
You can:
• modify the number of displayed levels
• modify the display criterion
• display a rectangle properties
Example of a Report Template showing a treemap
The "Capability Treemap" report template belonging to ITPM Solution shows a treemap.
This report breaks down a capability hierarchy into a treemap according to three available criteria (parameters):
• Number of components: the surface area is proportional to the number of descendants in the tree.
• Application ratio: the surface area is proportional to the number of realizing applications of current and descendant capabilities in the tree.
• Cost of applications: the surface area is proportional to the cost of applications realizing current and descendant capabilities in the tree.
To handle a treemap:
1. To lighten a treemap display, in the Number of displayed levels field, select an upper level.
Lower levels are hidden.
2. To display the treemap according to another criterion, in the drop-down menu of the Display criterion field select another criterion.
Example: Cost of applications.
The rectangle area corresponding to each element (e.g.: capability) is modified according to the new display criterion.
3. To display the values of an object, roll the mouse over the corresponding rectangle.
E.g.: on a business capability.
The rectangle color changes.
The criteria values of the object (e.g.: the capability) are displayed:
• the total number of components included in the object.
e.g.: 6
• its value for each available criterion.
e.g.: the ratio (2.56) and the cost (€1,831,758.33) of applications it includes.
4. To zoom in on an item, double-click the item.
The breadcrumb trail indicates you are one level lower down.
The element selected widens over the whole space of the treemap and displays its components.
You can drill down in the treemap levels, as long as the element includes items.
In the treemap top right corner, click One level up to go one level up. You can go up only one level at a time.