What is wrong with my script?

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jakobjakob 2018-6-8

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/404803-what-is-wrong-with-my-script

评论： Jan 2018-6-9

alldata.mat

Who could help me? What is wrong with my script? There is no counting...
index_aanname = find(strcmp(alldata(:,5), 'Aanname') == 1);
  TA = tijdnum(index_aanname);
  TA10 = TA - 10;
  SA = speler(index_aanname);
bal = 0 ;
medespeler_met_bal = 0 ;
medespeler_zonder_bal = 0 ;
tegenstander = 0 ;
open_ruimte = 0 ;
overzicht_veld = 0 ;
overig = 0 ;
for k = 1:length(index_aanname)
    firstTouchIndex = index_aanname(k);
    firstTouchTimestamp = alldata{firstTouchIndex,1};
    j = firstTouchIndex - 1;
    while j >= 1 && (firstTouchTimestamp - alldata{j,1}) <= 10.0
        viewingBehaviour = alldata{j,9};
        j = j - 1;
          if  strcmp(kijkrichting(i),'Bal') == 1
              bal = bal + 1
          elseif strcmp(kijkrichting(i),'Medespeler met bal') == 1
              medespeler_met_bal = medespeler_met_bal + 1;
          elseif strcmp(kijkrichting(i),'Medespeler zonder bal') == 1
              medespeler_zonder_bal = medespeler_zonder_bal + 1;
          elseif strcmp(kijkrichting(i),'Tegenstander') == 1
              tegenstander = tegenstander + 1;
          elseif strcmp(kijkrichting(i),'Open ruimte') == 1
              open_ruimte = open_ruimte + 1;
          elseif strcmp(kijkrichting(i),'Overzicht veld') == 1
              overzicht_veld = overzicht_veld + 1;
          elseif strcmp(kijkrichting(i),'Overig') == 1
              overig = overig + 1;
          end
      end
  end

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Rik 2018-6-8

Have you tried the debugger? You can set breakpoints to stop the execution of your code and continue step by step. That way you can watch the point where variables take on unexpected values. The debugging capabilities are one of the main features in Matlab that are superior to programs like Octave. You should really use it.

Jan 2018-6-9

在 MATLAB Online 中打开

By the way: There is no reason to compare the output or strcmp with 1. strcmp replies a logical value already:

if strcmp(kijkrichting(i), 'Bal')

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Answer 1

Image Analyst 2018-6-8

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/404803-what-is-wrong-with-my-script#answer_323903

Since kijkrichting is being compared to strings, it's most likely a cell array. Therefore you should be using {} instead of (). See the FAQ for a good explanation of when to use bracket, braces, or parentheses: https://matlab.wikia.com/wiki/FAQ#What_is_a_cell_array.3F

So use kijkrichting{i} instead of kijkrichting(i).