Graphical Layouts
One of most powerful features of the GTL is the syntax built around hierarchical statement blocks called layouts . A layout determines
- The overall organization of the graph -- whether it uses a overlay-type or a multi-cell display. A overlay-type layout superimposes all specified content elements into one plot area. A multi-cell layout arranges the specified contents into multiple rows and/or columns of cells (see "Basic Anatomy of an ODS Graph".
- What statements are allowed in the block. Generally, layout blocks may contain plots, lines of text, a legend, or even another layout.
- How the contained statements interact.
All GTL template definitions must contain at least one layout statement. Table 1.1 and Table 1.2 identify the overlay-type and multi-cell layouts; the sections that follow discuss the layout types in more detail.
Table 1.1: Overlay-type Layouts that Support Superimposition
Table 1.2: Multi-cell Layouts in Rows and Columns of Cells
| Layout |
Description |
| GRIDDED |
Basic grid of plots and text; all cells independent |
| LATTICE |
Externalized axes, headers, sidebars |
| DATALATTICE |
Data-driven number of cells; 1-2 classifiers |
| DATAPANEL |
Data-driven number of cells; n classifiers |
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