Brushing Overview
overview       see also 

Graphs allow you to visualize the relationships between points. After you make a graph, you often want to learn more about a point or a group of points. Brushing allows you to do this.

Initially you may find brushing useful to:

·    Show the characteristics of outliers

·    Tell whether points that lie in a brushing region share other characteristics

You may come away with a much greater understanding of the data after brushing, but you may also spot critical areas in a process that need immediate attention. See Brushing Features, Description, and Summary for more information.

You may find it useful to recreate your graph without the brushed points or, conversely, with only the brushed points. See Example of subsetting based on brushed points.

Brushing Item

Example

 

Brushing Tool

A special cursor that creates a brushing region.

Brushing Region

Bound by a dotted line, all points that fall within this region are considered brushed.

Brushing Palette

A floating window that shows the Data window row number for each brushed point as well as up to ten other column values for that row.

Brushing Markers

Symbols in the Data window next to the row numbers indicate which rows are currently brushed. These markers are removed if the data are changed.