Display value of variable




disp(X) displays the value of variable X without printing the variable name. Another way to display a variable is to type its name, but this displays a leading "X =", which is not always ideal.

If a variable contains an empty array, disp returns without displaying anything.


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Display Variable Values

Create a numeric array and a string.

A = [15 150];
S = 'Hello World.';

Display the value of each variable.

    15   150

Hello World.

Display Matrix with Column Labels

Display a matrix and label the columns as Corn, Oats, and Hay.

X = rand(5,3);
disp('     Corn      Oats      Hay')
     Corn      Oats      Hay
    0.8147    0.0975    0.1576
    0.9058    0.2785    0.9706
    0.1270    0.5469    0.9572
    0.9134    0.9575    0.4854
    0.6324    0.9649    0.8003

Display Hyperlink in Command Window

Display a link to a Web page by including HTML hyperlink code as input to disp. For example, display a link to the MathWorks® Web site.

X = '<a href = "">MathWorks Web Site</a>';

Display Multiple Variables on Same Line

Here are three ways to display multiple variable values on the same line in the Command Window.

Concatenate multiple strings together using the [] operator. Convert any numeric values to characters using the num2str function. Use disp to display the string.

name = 'Alice';
age = 12;
X = [name,' will be ',num2str(age),' this year.'];
Alice will be 12 this year.

Use sprintf to create a string, and then display it with disp.

name = 'Alice';
age = 12;
X = sprintf('%s will be %d this year.',name,age);
Alice will be 12 this year.

Use fprintf to directly display the string without creating a variable. However, to terminate the display properly, you must end the string with the newline (\n) metacharacter.

name = 'Alice';
age = 12;
fprintf('%s will be %d this year.\n',name,age);
Alice will be 12 this year.

Input Arguments

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X — Input arrayarray

Input array.

To display more than one array, you can use concatenation or the sprintf or fprintf functions as shown in the example, Display Multiple Variables on Same Line.

Introduced before R2006a

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