Essential Graphing • Scatterplot Matrix • Scatterplot Matrix Platform Options
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Scatterplot Matrix Platform Options
The following table describes the options within the red triangle menu next to Scatterplot Matrix.
Show Points
Shows or hides the points in the scatterplots.
Points Jittered
Turns the jittering of the points in the scatterplot on or off. This option is available when at least one variable is either ordinal or nominal.
Fit Line
Fits a simple regression line and its mean confidence interval to the scatterplots.
Density Ellipses
Shows or hides the outline and area of the density ellipses. See Example Using a Grouping Variable.
Shaded Ellipses
Colors the area within each ellipse. See Example Using a Grouping Variable.
Ellipses Coverage
Enables you to select an α-level for the ellipses to cover.
Ellipses Transparency
Enables you to select the transparency of the shaded ellipses, where 0 is completely transparent and 1 is completely opaque.
Ellipses Color
Enables you to select a color for the outline and the area within an ellipse.
Nonpar Density
Shows or hides the nonparametric density, which represents the areas where the data points are the most dense. The nonparametric density estimation is helpful when you have a lot of points and the density of the points is difficult to see.
There are two quantile density contours. One contour includes 50% of the smoothed density, and the other contour includes 90% of the smoothed density. Since the percentage is based on the smoothed density, the percentage may not agree with the actual proportion of points within a contour.
Group By
In the Group By window, you can perform the following actions:
•
If you did not select a Group variable in the launch window, you can add one now.
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If you did select a Group variable in the launch window:
‒
you can remove the existing Group variable.
‒
you can replace the Group variable.
See Example Using a Grouping Variable.
Lock Scales
Prevents axis scales and gradient legend scales from automatically adjusting in response to data or filtering changes.
Script
This menu contains options that are available to all platforms. They enable you to redo the analysis or save the JSL commands for the analysis to a window or a file. For more information, see Using JMP.