Cloud plots diplay three-dimensional data using a three-dimensional scatter plot.
To generate a cloud plot
Choose Graph Three Variable
Cloud Plot. The dialog shown below appears.
Data page
In the Cloud Plot dialog, the Data page has the following options:
Data
Data Set
Select a data set from the dropdown list or type the name of a data set. You can also type into the Data Set edit field any expression that evaluates to a data set.
Enter an S-PLUS expression that identifies the rows to use in the analysis. To use all the rows in the data set, leave this field blank.
Variables
X Axis Value
Specify the column containing x-axis values.
Y Axis Value
Specify the column containing y-axis values.
Z Axis Value
Specify the column containing z-axis values.
Conditioning
Select the columns specifying conditioning values.
Save Graph Object
Enter the name for the object in which to save the results of the analysis.
Plot page
In the Cloud Plot dialog, the Plot page has the following options:
Symbol
Symbol Color
Select the symbol color to use.
Symbol Style
Select the symbol style to use. This is ignored if Vary Symbol Style by Group is specified.
Symbol Size
Specify the size of symbol to use. This is the amount of character expansion to use relative to the device's standard size.
Titles page
In the Cloud Plot dialog, the Titles page has the following options:
Titles
Main Title
Specify a main title to add on the top of the page.
Subtitle
Specify a subtitle to add on the bottom of the page.
Labels
X Axis Label
Specify a label for the x-axis.
Y Axis Label
Specify a label for the y-axis.
Z Axis Label
Axes page
In the Cloud Plot dialog, the Axes page has the following options:
Aspect Ratio
Y to X Ratio
Specify the y-size/x-size ratio.
Z to X Ratio
Specify the z-size/x-size ratio.
Transformation
Transform Type
Specify whether a "Perspective" or "Orthogonal" transformation should be used when transforming the 3-D points to a 2-D display.
Distance Factor
Controls the amount of perspective, as in the distance from the object to the viewer. Smaller values increase the perspective; 0 implies the viewer is right at the object, 1 that the viewer is infinitely far away (orthogonal projection).
Zoom Factor
Overall scale factor for the drawn object. Zoom values other than 1 can be used to enlarge or compress the object.
Rotation
X Axis Rotation
Indicate the degrees of rotation to apply about the x-axis.
Y Axis Rotation
Indicate the degrees of rotation to apply about the y-axis.
Z Axis Rotation
Indicate the degrees of rotation to apply about the z-axis.
Ticks
Include Tick Marks and Labels
Check this to include tick marks and tick labels on each axis. By default the ticks are omitted, and the axes are denoted by simple symbolic arrows.
Multipanel page
In the Cloud Plot dialog, the Multipanel page has the following options:
Layout
Number of Columns/Rows/Pages Control the layout of the panels by specifying the number of columns, rows and pages.
Panel Order Choose from Graph Order or Table Order. Graph Order begins drawing panels in the bottom left corner of the graph, to the right and up. Table Order begins drawing panels in the upper left corner and continues right.
Include Strip Labels Check this to include strip labels on panels.
Continuous Conditioning
Number of Panels If the data are continuous, the number of panels is determined by the number specified in this field.
Overlap Fraction Create overlapping intervals by specifying the fraction of data points that are shared across two panels.
Interval Type Choose from Equal Counts or Equal Ranges. Equal Counts places an equal number of data points in each plot. Equal Ranges makes the interval widths all equal.