Function ontput missed or not assigned

Dear all,

I am confronted with a problem now. What I want to do is to formulate a function like

[y1,y2,y3]=f[x1,x2] 

Note that the output and input dimensions are constant. Not all outputs will be assigned a value so in Matlab it will report an error. My question is that is there any method that I can assign values to the missed outputs outside when I call the function?

Thanks a lot

[KSSV]

Show us the code and specify the error.

[per isakson]

"is there any method that I can assign values to the missed outputs outside [the function, f ]"

The simple answer is no - afaik.

[Tonghui Zhang]

Hi,

The function code is as followed

function [y1 y2]=xxx(u)
if u<10
    y1=1
else
    y2=1
end
end

The error is 'when you are calling function xxx, no value is assigned to y2'

Answer 1

[KSSV]

function [y1 y2]=xxx(u)
if u<10
    y1=1 ; 
    y2= [] ;
else
    y1 = [] ; 
    y2=1 ; 
end
end

[Tonghui Zhang]

Thank you for your answer, I know this can solve the problem. My problem is that I don't want to update y2 in this case so, is there any method that I can update the missed output outside the function?

[Walter Roberson]

No, there is no method to do that. You can use try/catch to handle the error more smoothly, but the error handling will be invoked before the outputs that are present are assigned.