Tree Maps

_____ define the structure of the Tree Map, and ______ define the ___ and ___ of the individual rectangles.

1. Dimensions. 2. Measures. 3. Size. 4. Color.

How to. Build/create a Tree Map.

1. Drag one [Measure] to [Color] and [Size] 2. Drag one [Dimension] to [Detail]

Tree Maps are built solely on the __ card; no field are placed on __ and __.

1. [Marks] 2. [Rows] 3. [Columns] This is also true for building Pie Charts.

How are negative values displayed in a Tree Map?

By default they are hidden.

How to. Change a Tree Map to a Bubble Chart.

Change [Mark] type to [Circle]

How to. Change a Tree Map to a Word Cloud.

Change [Mark] type to [Text]

T/F: Tree Maps have an axis.

False

When to use Tree Maps?

For showing part-to-whole comparisons, especially for data sets with long tails. Tree Maps effectively show all of the data at once. Good at displaying many levels of dimensions: i.e. category and sub-category Long tails: values that spread out very far in their distributions - many small values that contribute the whole dataset.

Visual best practice with respect to colors - what is the maximum number of colors?

Maximum of 7 colors in any view.

How do Tree Maps show data?

Nested rectangles.

Tool Tips can show additional information that is __ displayed in the viz.

Not.

How are measures displayed? (i.e. larger values vs. smaller values)

Only the larger values are displayed. By default T. does not show overlapping labels by default. All label information is automatically included in the [Tool Tip].