Matrix Plots - Advanced Tab

Graphical Analytic Techniques

Select the Advanced tab of the Matrix Plots Startup Panel to select from a variety of graph and fit types when creating your matrix plots. This tab also contains options for specifying statistics and histogram intervals.

Variables

Click the Variables button to display a standard variable selection dialog box, in which you can select the x- and (optional) y-axis variables for the graph. When you select Square matrix plots, you will need to select only variables for the x-axis; when you select Rectangular matrix plots, you will need to select variables for both the x- and y-axis. The selections made will be displayed below the Variables button.

Graph Type

Select the type of matrix plot from the Graph Type list on this tab. Click the desired plot link below for a brief description of that type of graph.

Square Scatter Matrix	Rectangular Scatter Matrix
Square Line Matrix	Rectangular Line Matrix

Missing data deletion

Choose between Pairwise or Casewise deletion of missing data in this group box.

Display

Select either the Histogram or Box plot option button to display histograms or box-whisker plots along the diagonal of the graph.

Show scale values. Select this check box to display the scales (axis labels) for the graphs displayed on the left, right, and bottom of the matrix plot.

Fit

You can fit either none (select Off) or one of several equations to the data in the matrix plots by selecting one of the predefined functions.

Linear	Distance Weighted LS
Polynomial	Negative Exponential LS
Logarithmic	Spline
Exponential	Lowess

Statistics

You can include a variety of statistics as footnotes in the graph by selecting one or more of the statistics listed in this box.

R square

Select this check box to include the R square for the plotted variables.

Correlation and p

Select this check box to include the correlation for the plotted variables and its corresponding p-value.

Regression equation

Select this check box to include two regression equations in the footnotes. The first equation is for the y-axis variable as a function of x, the second is for the x-axis variable as a function of y.

Histogram Intervals

Frequency histograms are placed on the diagonal of square matrix plots and in the first row and column of rectangular matrix plots. You can also choose the type of scaling for the histograms in this group box.

Common Scales

When you select the Common scales check box, the scale will be based on a common range of all of the histogram ranges, which enables you to compare the histograms. However, if the individual histogram ranges vary widely (causing a very wide common scale), some of the histograms may be unreadable. If you clear this check box, STATISTICA will plot each of the histograms based on their individual ranges. If you choose to use this independent scaling, comparing histograms would be difficult since they could all possibly have different scales, but they may be better defined than if Common scales were used.

Mark Selected Subsets

When you click this button, the Specify Multiple Subsets dialog box will be displayed, in which you can specify selection conditions that will subset (i.e., categorize) the cases in one plot. For more information about this option, see Mark Selected Subsets. The point markers that identify specific subsets will be listed in the legend next to the text of the respective case selection conditions (as defined in the Specify Multiple Subsets dialog box).