how can I stop this error?
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this is code of my equation getting from you.
Z = zeros(size(W1)); kernel = [Z, W1, Z; W3, Z, W4; Z, W2, Z]; filtered = conv2(vk, kernel, 'same'); vk = (1-w)*vk + filtered./W(i,j);
my equation
v(i,j))^(k+1)= (1-ω)(v(i,j))^(k)-ω[(W1(i,j)(v(i+1,j))^(k)+ W2(i,j)(v(i-1,j))^(k+1)+ W3(i,j)(v(i,j+1)^(k)+ W4(i,j)(v(i,j-1))^(k+1)(/(W i,j)]
v matrix
k iteration
W matrix
w constant
the error I have is!.
Undefined function or variable "vk".
Error in ==> SOR at 69 filtered = conv2(vk, kernel, 'same');
5 个评论
Matt Kindig
2013-10-1
Exactly what the error is saying: you haven't defined "vk" prior to this line:
filtered = conv2(vk, kernel, 'same');
Mary Jon
2013-10-1
Walter Roberson
2013-10-1
Yes. You have not set "vk" to anything by the time that line is executed. You do not assign anything to "vk" until the next expression.
Mary Jon
2013-10-1
Image Analyst
2013-10-1
vk is presumably your original signal. If you don't know what it is, then what do you think you're filtering? Why are you attempting to filter something but don't know what it is? If you're running a filter, you must have some idea of what you want to filter, otherwise, why bother?
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2013-10-2
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