Using Simulink

Displaying Text on the Block Icon

To display text on the icon, enter one of these drawing commands.

disp('text') or disp(variablename)
text(x, y, 'text') 
text(x, y, stringvariablename)
text(x, y, text, 'horizontalAlignment', halign, 
'verticalAlignment', valign)
fprintf('text') or fprintf('format', variablename)
port_label(port_type, port_number, label)

The disp command displays text or the contents of variablename centered on the icon.

The text command places a character string (text or the contents of stringvariablename) at a location specified by the point (x,y). The units depend on the Drawing coordinates parameter. For more information, see Controlling Icon Properties.

You can optionally specify the horizontal and/or vertical alignment of the text relative to the point (x, y) in the text command. For example, the command

text(0.5, 0.5, 'foobar', 'horizontalAlignment', 'center')

centers foobar in the icon.

The text command offers the following horizontal alignment options

Option	Aligns
left	The left end of the text at the specified point
right	The right end of the text at the specified point
center	The center of the text at the specified point

.

The text command offers the following vertical alignment options

Option	Aligns
base	The baseline of the text at the specified point
bottom	The bottom line of the text at the specified point
middle	The midline of the text at the specified point
cap	The capitals line of the text at the specified point
top	The top of the text at the specified point

.

The fprintf command displays formatted text centered on the icon and can display text along with the contents of variablename.

Note    While these commands are identical in name to their corresponding MATLAB functions, they provide only the functionality described above.

To display more than one line of text, use \n to indicate a line break. For example, the figure below shows two samples of the disp command.

The port_label command lets you specify the labels of ports displayed on the icon. The command's syntax is

port_label(port_type, port_number, label)

where port_type is either 'input' or 'output', port_number is an integer, and label is a string specifying the port's label. For example, the command

port_label('input', 1, 'a')

defines a as the label of input port 1.

The Icon Pane

Displaying Graphics on the Block Icon