Graphics

Adding a Legend to a Graph

Legends provide a key to the various data plotted on a graph. The following picture shows the legend for a graph of four functions of a variable plotted with lines of different colors. Note how you can assign an appropriate string to each line in the legend.

Add a legend by clicking the legend icon in the toolbar or by selecting Legend from the Insert menu. When plot editing is enabled, you can select and then move and resize the legend.

You can also use the legend command to add a legend to a graph.

Specifying the Text

By default, the legend labels each plotted object (line, surface, etc.) with the strings data1, data2, etc. You can change this text by double-clicking on the text to enable edit mode. In edit mode, you can retype the text string.

You can use T_EX characters in the text strings to produce symbols. You can disable interpretation of characters as T_EX sequences by selecting none from the Interpreter submenu of the legend's right-click context menu.

See the the Table of TEX symbols in the Text Properties reference documentation for more information.

Positioning the Legend

There are a number of ways to position the legend.

• Enable plot edit mode, select the legend, and drag it to the desired location.
• Right-click on the legend to display its context menu, mouse over Location, and select one of the predefined locations from the submenu.
• Right-click on the legend to display its context menu and select Properties to display the Property Editor, which provides a graphical device for positioning the legend.

You can also select a vertical or horizontal orientation for the legend. Use the Orientation item in the context menu to make this selection.

Changing the Appearance of the Legend

You can specify the following legend characteristics from the context menu:

• Color -- Set the background color of the legend.
• Edge Color -- Set the color of the line enclosing the legend box.
• Line Width -- Set the width of the edge line.
• Font -- Set the font, font style, and font size of the text used in the legend.
• Interpreter -- Set the text Interpreter property to use T_EX or plain text.
• Orientation -- Orient the legend entries side by side (horizontal) or on top of each other.
• Properties -- Display the Property Editor with legend properties.
• Show M-code -- Generates M-Code for recreating the legend.

Adding a Colorbar to a Graph

Pinning -- Attaching to a Point in the Figure

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