error checking in matlab

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Sam
Sam 2012-11-20
I have a code segment where I am error checking input arguments and I am having issues making it work... the structure for the code for the two error checks are the following:
error code should be m>n or n<1 and xi=xj for i!=j
if (m>n)||(n<1)
error('myApp:argChk', 'check for correctness of input')
end
for i = 1:n
for j = i+1:m
if x(i,1)=x(j,1)
error('myApp:argChk', 'check for correctness of input')
end
end
end

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回答（1 个）

Matt Fig
Matt Fig 2012-11-20
编辑：Matt Fig 2012-11-20
When asking a question, you need to explain what you post. What is m and n? Are they supposed to be the size of x, like:
[m,n] = size(x)
or what? Are they passed in or calculated in your function?
There is an error on this line:
if x(i,1)=x(j,1)
it should read:
if x(i,1)==x(j,1)
Please be more specific about what you want to do. This statement:
x(ii) must be equal to x(jj) for ii~=jj
doesn't make much sense. Do you mean:
x(ii,jj) must be equal to x(jj,ii) for ii~=jj
What about non-square matrices?

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