Can somebody tell me why, when I call a function using an input, the input is disregarded?

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tash7827 2015-8-4

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编辑： tash7827 2015-8-4

采纳的回答： James Tursa

在 MATLAB Online 中打开

I have a function,

function cubefinal = sensingmatrix3d(time)

and I call it like this if I want time=3:

cubefinal = sensingmatrix3d(3);

but it is not working (the body of the function is correct) because when I displayed 'time', answers seemed totally random:

>> test3dmatrix
time =
       6
>> test3dmatrix
time =
       6
>> test3dmatrix
time =
       7
>> test3dmatrix
time =
       7
>> test3dmatrix
time =
       4
>> test3dmatrix
time =
       5

could somebody please tell me why time is random? and how to fix it? thank you.

Edit: sorry -- here is my code

function cubefinal = sensingmatrix3d(time)
exposure=zeros(60,96,10);
if time==3
   for j=1:size(exposure,1);
    for jj=1:size(exposure,2);
        randnum=randi([1 8]);
        exposure(j,jj,randnum:randnum+2)=1;
        %if rand < 0.003
        %    checkRow=reshape(exposure(j,jj,:), [1 10])
        %end
    end
   end
elseif time == 4 
    for j=1:size(exposure,1);
    for jj=1:size(exposure,2);
        randnum=randi([1 7]);
        exposure(j,jj,randnum:randnum+3)=1;
    end
    end
elseif time == 5 
    for j=1: size(exposure,1);
    for jj=1:size(exposure,2);
        randnum=randi([1 6]);
        exposure(j,jj,randnum:randnum+4)=1;
    end
    end
elseif time == 6 
    for j=1:size(exposure,1);
    for jj=1:size(exposure,2);
        randnum=randi([1 5]);
        exposure(j,jj,randnum:randnum+5)=1;
    end
    end
elseif time == 7 
    for j=1:size(exposure,1);
    for jj=1:size(exposure,2);
        randnum=randi([1 4]);
        exposure(j,jj,randnum:randnum+6)=1;
    end
    end
end
   cubefinal=exposure;
disp(time)
end

采纳的回答

James Tursa 2015-8-4

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https://ww2.mathworks.cn/matlabcentral/answers/232342-can-somebody-tell-me-why-when-i-call-a-function-using-an-input-the-input-is-disregarded#answer_188240

You show code for function sensingmatrix3d, but your example is calling test3dmatrix. How are the two related? Look at how test3dmatrix is calling your function.

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James Tursa 2015-8-4

编辑：James Tursa 2015-8-4

在 MATLAB Online 中打开

It means one of two things. Either you did not set the breakpoint in your test3dmatrix properly, or it means you are not calling the test3dmatrix file that you think you are calling. Check again what you get with the following:

which test3dmatrix

And then make sure you edit that exact file in the directory it shows. Then set a breakpoint in that exact file. Then make another run. It should pause at the line in test3dmatrix where you just set the breakpoint (i.e., the line where you call sensingmatrix3d).

tash7827 2015-8-4