GDA - Methods for Specifying Designs

STATISTICA General Discriminant Analysis (GDA) (as well as General Linear Models (GLM), Generalized Linear/Nonlinear Models (GLZ), General Regression Models (GRM), General Partial Least Squares Models (PLS), and ANOVA/MANOVA) provides three alternate methods for specifying designs for the predictor variables or effects: via the Analysis Wizard, the Quick Specs dialog boxes, and the Analysis Syntax Editor. The Analysis Wizard and Analysis Syntax Editor user interfaces are only available when General discriminant analysis is selected as the Type of analysis from the General Discriminant Analysis (GDA) Models Startup Panel - Quick tab. Refer also to the Introductory Overview for details concerning analyses in GDA that involve categorical and/or continuous predictor effects, in an ANOVA-like design.

Note: even if you choose one of the first two user-interface methods, you can always switch to the GDA Models Syntax Editor where the GDA syntax describing your current design (as specified via Analysis Wizards or Quick Specs dialog boxes) will be displayed for further editing; the GDA Models Syntax Editor also provides options for saving the design syntax in a text file for repeated use.

Analysis Wizards. The simplest method for specifying designs is via the Analysis Wizard. If you select this Specification method from the General Discriminant Analysis (GDA) Models Startup Panel - Quick tab, STATISTICA will guide you through a series of dialog boxes for specifying the desired type of design for the predictor variables (or effects). This user interface is only available when General discriminant analysis is selected as the Type of analysis from the General Discriminant Analysis (GDA) Models Startup Panel - Quick tab.

Quick specs dialogs
This user interface will present a Quick Specs dialog box, tailored to the specific Type of analysis selected on the General Discriminant Analysis (GDA) Models Startup Panel - Quick tab. If you have some experience with using other STATISTICA modules, this user interface will appear most familiar to you.
Analysis syntax editor
With this user interface, you can type in directly the command syntax for specifying any type of regression or experimental design using the GDA syntax conventions in the GDA Models Syntax Editor. Note that the GDA syntax conventions are essentially identical to the GLM syntax conventions (see General Linear Models (GLM), with only a few additions and omissions relating to stepwise and best subset analyses, and the specification of the categorical dependent variable. This user interface is only available when General discriminant analysis is selected as the Type of analysis from the General Discriminant Analysis (GDA) Models Startup Panel - Quick tab.
Specification methods and dialogs
For a detailed explanation of each method or dialog box, click on the appropriate link.
GDA Models Startup Panel - Quick tab GDA Models Syntax Editor
Quick Specs GDA Syntax
Quick Specs - Quick tab GDA Syntax Examples
Quick Specs - Advanced tab  
Effects in Design  

See also GDA - Index.