Stacking in a loop

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Nik Rocky 2020-6-26

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https://ww2.mathworks.cn/matlabcentral/answers/555262-stacking-in-a-loop

评论： dpb 2021-8-10

Hello,

Every time I get stacked in for loop. Its happens just with one Dataset. The similar datasets (Traj_inerpl) working good.

I have one loop:

for traj_cnt = 1:length(Traj_interpl) %for every Traj-Cell
    for t_row_cnt = 1:length(Traj_interpl{traj_cnt}) %for any row of Traj                       %%% I'm stacking here <<<<<<<<
        if t_ref(t_ref_cnt) == Traj_interpl{traj_cnt}(t_row_cnt,1) %if right row of Traj is choosen 
            motorspeed_detected(traj_cnt) = Traj_interpl{traj_cnt}(t_row_cnt,2); %write detected value to array
            break; %just one motorspeed_detected value is possible/no sence to follow a searching
        else %%% If I do a pause I stay be here
            motorspeed_detected(traj_cnt) = 0;
        end
    end
end

Within I create a motorspeed_detected array. I stay stacking while second for-loop. If I make a pause while stacking — program stay on else expression (not inside). When I left a pause — program starts running and work.

Variables on time of stacking:

t_ref_cnt = 1602 %Outside loop cnt
traj_cnt = 51 %every time different values
length(Traj_interpl) = 203 
t_row_cnt = 115 %every time different values
length(Traj_interpl{traj_cnt}) = 119 %every time different values
t_ref(t_ref_cnt) = 17.7600 %every time different values
Traj_interpl{traj_cnt}(t_row_cnt,1) = 7.8300 %every time different values
motorspeed_detected(traj_cnt) = 0 

What can be a reason?

Thank you!

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dpb 2021-8-10

By " I get stacked in for loop" do you mean "stuck", maybe?

And it is not at all clear what pause has to do with anything -- certainly if you enter a pause command, MATLAB will indeed "pause temporarily stops MATLAB® execution and waits for the user to press any key" so where you are would all depend on when such was issued.

That it would be random values each time is to be expected; there would be no way to synchronize that command timing with the time the loop began.

If instead you mean there's one file for which you don't ever satisfy the if condition; that would be purely data dependent -- that there simply isn't any value for that file that is True.

We could only verify that by having the data file...

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