Plot Layout

Plot Layout

It is possible to add multiple plots to the same graph, not only withing the same plot, i.e. you can have 2 or more Image_Graph_Plotarea specified within the same graph.

The way Image_Graph handles this is utilizing the same method that Java does. This means that when you have 2 elements that you can layout onto the graph, you specify whether they are vertically or horizontally aligned (and at which percentage of the total width/height the split is positioned). This means that you define that "the area covered by this layout, shall be shared by this percentage between these 2 elements". An example:

1     ...
2     $Graph->add(
3         new Image_Graph_Layout_Vertical(
4             $PlotArea1 = new Image_Graph_Plotarea(),
5             $PlotArea2 = new Image_Graph_Plotarea()
6             75
7         )
8     );
9     ...

Layouts can be nested, so it is possble to define more than one arrangements:

1     ...
2     $Graph->add(
3         new Image_Graph_Layout_Vertical(
4             new Image_Graph_Layout_Horizontal(
5                 $PlotArea1 = new Image_Graph_Plotarea(),
6                 $PlotArea2 = new Image_Graph_Plotarea()
7             ),
8             $PlotArea3 = new Image_Graph_Plotarea(),
9             75
10        )
11    );
12    ...

Not only Image_Graph_Plotarea can be "layouted" all subclasses of the abstract class Image_Graph_Layout can be layouted. These are: Image_Graph_Plotarea, Image_Graph_Legend and Image_Graph_Title