What Are Text Annotations?
Text annotations are boxes containing text strings that you compose. The box can have a border and a background, or be invisible. The text can be in any installed text font, and can include TeX or LaTeX markup. You can add free-form text annotations anywhere in a MATLAB figure to help explain your data or bring attention to specific points in your data sets. As the following example shows, annotating a graph manually is easy in plot edit mode. When you enable plot editing, you can create text annotations by selecting the appropriate kind of annotation from the Insert menu, clicking in the graph or the figure background and then entering text. To insert textarrow annotations, you first drag out an arrow from tail to head, then type the text at the text cursor next to the tail, You can also add text annotations from the command line, using the text or gtext function. The example illustrates how to use text. Using plot editing mode or gtext makes it easy to place a text annotation where y
