Ploticus data display engine Copyright Steve Grubb
Ploticus Gallery - Scatterplots
This page contains a series of scatterplot examples
illustrating the available varieties and options.
These examples all use ploticus's
proc scatterplot.
Example 1
scatterplot1
This example shows the correlation between two variables.
The 1-D distribution for each variable is shown along each axis.
Duplicate data points are offset slightly (the cluster
option) to show duplicity.
Example 1a
scatterplot10
Correlation scatterplot showing regression line and error bars on the points.
Example 2
scatterplot8
This illustrates how multiple points can be displayed using the clustering option.
Size, color, "transparency", and shape of the points are all user-controllable, as is
the distance of clustering.
Example 3
scatterplot3
Points may be marked with a variety of geometric symbols and characters/text,
in a variety of colors. Point symbols may be solid (filled) or transparent
(not filled).
Example 3a
scatterplot3a
The size of point symbols may be driven by a data field, allowing display of
a 3rd variable.
Example 4
scatterplot4
This example demonstrates how points that are outside of the defined plotting
area are omitted. Here, the points are not filled with color,
making them appear to be transparent.
Example 5
qual
An example showing scores over time. Case identifiers are shown
at bottom using a second invocation of proc scatterplot.
Example 6
scatterplot5
An example where data text is shown instead of a point symbol.
This may be useful in identifying outlier cases.
Example 7
scatterplot6
A 1-D scatterplot showing instances over time. Instances are denoted by
lines in the top panel, and by names in the bottom panel.
1-D distributions usually work better for scattered data points; when there is
significant duplication a histogram (bar graph) is more effective.
Example 8
multiscat
A full-page example showing an array of scatterplots.
Example 9
errbar1
In this example, proc scatterplot was used to render the point
symbols, and then the error bars were added using proc bars.
Example 10
scatterplot7
Another full-page example showing multiple scatterplots.