suppressing the display of ans

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Dale
Dale 2012-2-9
评论： Nikhanze 2023-12-21
How can I suppress or omit the display of the "ans" when executing my function?
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Kavya
Kavya 2023-8-24
When you enter a command without a semicolon at the end, MATLAB displays the result.
>> x = 5 + 1
x =
6
Nikhanze
Nikhanze 2023-12-21
Enter k = 8-2; including the semicolon at the end. The result won't appear in the command window,but you can see the value of k in workspace browser

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采纳的回答

Stephen23
Stephen23 2014-9-26
编辑：Stephen23 2014-9-26
It seems that the semi-colon is not the desired solution. If you can change the function, one solution is to use nargout and simply not define an output for nargout==0:
function x = temp
if nargout>0
x = 2;
end
end
when called in the command window:
>> temp
>> x = temp
x =
2
Some MATLAB functions do this, or have a look at calendar for a similar concept.

更多回答（7 个）

Wayne King
Wayne King 2012-2-9
Put a semicolon at the end of the line.
x = randn(8,1);
fft(x);
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George Fega
George Fega 2017-4-22
You are the best, dude! Thank you vrey much!
Le Yu
Le Yu 2019-1-31
That's exactly what I need!! THx

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Matt Tearle
Matt Tearle 2012-2-9
What Wayne said. But to dig a bit deeper: given that you specifically said "function", I'm guessing you might be confused by the whole local vs global variable thing.
If you have
function y = myfun(x)
y = cos(x.^2);
Then you say
>> z = myfun(pi)
The value of pi is passed into the function where it is assigned to the local variable x; the value of the local variable y is computed and returned to the base workspace according to how the function was called at the command line. In this case, the return value is assigned to the (base) variable z. Because there's no semicolon at the end of that line, the output from that assignment is echoed to the command window. So if you call it as
>> myfun(pi)
MATLAB, as always, assigns the calculated value to ans. Again, there's no semicolon, so you see the result displayed. Note that this display has nothing to do with the line y = cos(x.^2); in the function. If you leave off the semicolon there, you'll see that assignment echoed to the command window -- y = -0.9027 -- and the assignment to ans as well -- ans = -0.9027.
If the function has no return values, nothing will be assigned to ans:
function myfun(x)
plot(x)
>> myfun(1:5)
Allen Bibal
Allen Bibal 2017-2-25
编辑：Allen Bibal 2017-2-25
A=5;
B=4;
z=A+B;
disp(Z)
Pramod Bhat
Pramod Bhat 2012-2-9
It is not possible. Where there are no arguments MATLAB automatically makes "ans" a variable and assigns value to it. You cant hide it.
  1 个评论
Walter Roberson
Walter Roberson 2012-2-9
Probably not correct. You can override the display() function, which is what is invoked to output a value when there is no semi-colon after an expression.

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Kenneth Cantos
Kenneth Cantos 2016-8-25
is there a code that can hide an output on the command window but the item to be hide will be needed on the succeeding formula.
for example:
i will set A=1+2 B=1+3
Formula:
Z=A+B
Z=9
I want to show only the result of Z.
thanks guys.
Niklas Berg
Niklas Berg 2022-10-13
If your output argument is called x for example just type
clear x
in the end of your function. Then x won't show as ans in the command window.
Kavya
Kavya 2023-8-24
When you enter a command without a semicolon at the end, MATLAB displays the result.
>> x = 5 + 1
x =
6
Optionally, you can add a semicolon to the end of a command so that the result is not displayed. MATLAB still executes the command, and you can see the variable in the Workspace browser.
>> x = 5 + 1;

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