Basic Analysis and Graphing - SAS

Chapter 12 Creating Overlay Plots 343
Overlay Plot Options
Table 12.2 Descriptions of Overlay Plot Platform Options
Overlay Plots
Contains options for overlaying:
Overlay Y’s Overlays all variables assigned to the Y role on one plot.
This option is on by default and unavailable if only one Y variable is
assigned.
Overlay Groups Overlays groups and produces a legend. This option is
off by default and unavailable if no grouping variables are assigned. See
“Overlay Groups” on page 343.
No Overlay Turns off overlaying for both Ys and groups. Creates a
separate plot for each Y and each group. This option is off by default
unless only one Y variable is assigned and no grouping variables are
assigned. In this case, no overlaying options are available.
Separate Axes
Uniform Y Scale
Connect Thru Missing
Range Plot
Assigns each plot its own set of xy-axes. If Separate Axes is off, the vertical
axis is shared across the same row of plots and the horizontal axis is shared
on the same column of plots. The default setting is off, which results in
shared axes. See “Separate Axes” on page 344.
Uses the same Y scale for all grouped plots. The default setting is off.
Connects adjacent points in the plot, regardless of missing values. The
default setting is off.
Connects the lowest and highest points at each x value with a line with bars
at each end. The Needle and Range Plot options are mutually exclusive.
Y Options Contains options for the Y variables. See “Y Options” on page 345.
Ungroup Plots
Arrange Plots
Script
Creates a separate chart for each level of a grouping variable.
Enables you to specify the number of plots in each row.
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.
Overlay Groups
Figure 12.6 shows the effect that the Overlay Groups option has on an overlay plot with one Y variable, one
X variable, and a grouping variable. The grouping variable has two levels. The plot on the left has Overlay
Groups turned off, so a separate graph is produced for the two levels of the grouping variable. The plot on
the right has Overlay Groups turned on, so there is a single graph that uses colors and markers to show the
two levels of the grouping variable. A legend describing the levels is added under the graph.