How top stop for loop if value is reached

2019 4 18
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更新时间：2019 4 19
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Z is 2000 by 2000 matrix filled with values
I have this for loop I want it to stop when there is no change in the matrix X
so if by the 200 itration there is not a huge change in the vector 199 and 200 stop the loop
for c = 1:2000
X(c+1,:) = X(c,:)*Z;
end

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James Tursa
James Tursa 2019-4-18
编辑：James Tursa 2019-4-19

0 个投票

if( norm(X(c+1,:)-X(c,:)) < some_tolerance )
break;
end
or perhaps
if( all(abs(X(c+1,:)-X(c,:))) < some_tolerance )
break;
end
In the second example, some_tolerance could be a vector if you wanted to apply different tolerances to different elements

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