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SAS System for Statistical Graphics
Visualizing Categorical Data
Visual Statistics
scatter Scatterplot matrix with SAS/INSIGHT scatter

SAS Macro Programs: scatter

$Version: 1.1 (1 Oct 1997)
Michael Friendly
York University
Updated 09/22/2009 21:45:44

The scatter macro ( [download] get scatter.sas)

Scatterplot matrix with SAS/INSIGHT

The scatter macro uses SAS/INSIGHT to produce a scatterplot matrix for two or more variables, showing all pairwise plots. If observations are classified by a grouping variable, colors and symbols may be assigned automatically to the observations in different groups.

The macro must be run in the SAS Display Manager, not in batch. Also, the macro starts SAS/INSIGHT with a PROC INSIGHT statement, so you must terminate INSIGHT before you can run additional procedures from the Program Manager.

Usage

scatter is a macro program. Specify the names of the VAR= variables, and the GROUP= or CLASS= grouping variable. All options have default values.

The arguments may be listed within parentheses in any order, separated by commas. For example: 

   %scatter(data=iris, var=sepalwid sepallen petalwid petallen, class=species);

Arguments

DATA=
The name of the SAS dataset to be plotted. If DATA= is not specified, the most recently created data set is used.
VAR=_numeric_
List of variables to be plotted. The default is to plot all numeric variables in the dataset.
CLASS=
GROUP=
Name of an optional grouping variable used to define the plot symbols and colors.
SYMBOLS=square plus circle diamond X up down star
List of symbols, separated by spaces, to use for plotting points in each of the groups. The i-th element of SYMBOLS is used for group i.
COLORS=BLACK RED GREEN BLUE BROWN YELLOW ORANGE PURPLE
List of colors to use for each of the groups. If there are g groups, specify g colors. The i-th element of COLORS is used for group i.

Notes

The scatter macro calls the paint macro to assign colors and symbols to the observations.

Example

%include goptions;
%include data(iris);
%scatter(data=iris,
    var=sepalwid sepallen petalwid petallen,
	 class=species)

See also

scatmat Scatterplot matrix
paint