Simple Loop

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Thomas
Thomas on 3 Dec 2011
Hi, I'm OK with Matlab usually but this has me stumped. When running the following simple script I get the error
Attempted to access a_b(15); index must be a positive integer or logical.
Error in test (line 10) a_b(i) = a_a;
Here is the code:
ts = 0.01; % Timestep (s)
a_b = zeros(1,6001);
for t_a=0:ts:60
a_a = t_a*7;
i = t_a*(1/ts)+1; % Step
a_b(i) = a_a;
end
This is just the essentials of the loop that is causing the problem. Many thanks for any help in advance, Tom

Accepted Answer

Paulo Silva
Paulo Silva on 3 Dec 2011
ts = 0.01; % Timestep (s)
a_b = zeros(1,6001);
i=1;
for t_a=0:ts:60
a_a = t_a*7;
%i = t_a*(1/ts)+1; % Step
a_b(i) = a_a;
i=i+1;
end
plot(0:ts:60,a_b)
  1 Comment
Thomas
Thomas on 3 Dec 2011
oh yer, of course! Thanks very much

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