Error in storing the values from a loop to a matrix
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I am getting error while storing values of loop .
iterations = 10;
t = zeros(2,iterations);
for i = 1:iterations
theta1 = t(1) + 3;
theta2 = t(2) + 5;
t(1) = theta1;
t(2) = theta2;
t(1,i) = theta1;
t(2,i) = theta2;
end
disp(t)
I should have got 3 and 5 in the first column. But i am getting 30 and 50
回答（1 个）
Walter Roberson
2017-9-10
No, the result you got was what you programmed. Remember that linear indexing goes down columns. Your code is exactly equivalent to
iterations = 10;
t = zeros(2,iterations);
for i = 1:iterations
theta1 = t(1,1) + 3;
theta2 = t(2,1) + 5;
t(1,1) = theta1;
t(2,1) = theta2;
t(1,i) = theta1;
t(2,i) = theta2;
end
disp(t)
Notice that you keep writing new values into t(1,1) and t(2,1), continually adding 3 or 5 to them. The end result is going to be 3 * iterations or 5 * iterations.
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2017-9-10
2017-9-10
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