Problems with my loop

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flashpode 2021-9-21

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https://ww2.mathworks.cn/matlabcentral/answers/1457659-problems-with-my-loop

回答： Mathieu NOE 2021-9-21

Hey I made a loop that compares a string I got with a number.

P = size(t1,1);

h = 0;

for s = 1:1:P

if strcmp(t1(s), '5959') %compares if in the string (t1) there are those numbers, if so

% if the next line(Number) if it is 0000 add

% h to t1

if strcmp(t1(s+1), '0000')

h= h+1;

if h == 24 % if h get to 24 then it goes another time to 0

h = 0;

end

T_Hour1 = num2str(h) + t1;

end

I think I've got many errors but the one first one that I got is:

if strcmp(t1(s+1), '0000')

could anybody help me to make this work? and if you see a better solution to get to the solution share it.

Thank you!!!!

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Stephen23 2021-9-21

"could anybody help me to make this work?"

Please show us the complete error message. This means all of the red text.

"... if you see a better solution to get to the solution share it."

It looks like you are working with dates/times, in which case manipulating strings like that is not likely to be a good approach.

Please explain your actual task: https://xyproblem.info/

flashpode 2021-9-21

Those are the problems:

Index exceeds the number of array elements (403432).

Error in CodigoBo (line 13)

if strcmp(t1(s+1), '0000')

and as you said is a string of numbers that go from 0000 to 5959(minutes and secods). every time reaching 5959(there are many concadenated) it goes another time to 0000. What I want is each time it goes to 0000 put a number in front of it that goes from the 0 to 23 (hours).

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Answer 1

Mathieu NOE 2021-9-21

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在 MATLAB Online 中打开

hi

I tried to guess what the intention was, and came to this suggestion, although I have no idea what the output should be

maybe if you had supplied an inout data and some indications of what the output should be, I could be more effective.

all the best

t1 = [" balljkvjkjvk     ";...
      " x 5959           ";...
      " bal 0000         ";
      " balljkvjkjvk     ";...
      " f 5959           ";...
      "  0000   frg      "];
P = size(t1,1);
h = 0;
for s = 1:1:P
    if  contains(t1(s), '5959') %compares if in the string (t1) there are those numbers, if so 
                              % if the next line(Number) if it is 0000 add
                              % h to t1
     toggle = 1;   % set toggle
    end
    
    if (toggle == 1 && contains(t1(s), '0000')) 
       h= h+1;
       if h == 24 % if h get to 24 then it goes another time to 0
           h = 0;
       end
       T_Hour1 = num2str(h) + t1;
    toggle = 0; % reset toggle
    end
end