Comparing characters in a matrix

3 次查看（过去 30 天）

Mini 2013-2-25

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/64833-comparing-characters-in-a-matrix

I have a (nx1) matrix,M, that stores a list of characters and I need to iterate through a loop and keep comparing the i-th character in the matrix with a temp character.

But I'm not sure how to do this, i tried using M{i,1}== tmp and strcmp(M{i,1},tmp) but neither seem to work. Please help, thank you so much!

5 个评论
显示 3更早的评论隐藏 3更早的评论

Mini 2013-2-25

在 MATLAB Online 中打开

    cmd = ['tesseract ',file,' tmp -psm 10']; %this is a command to run OCR and will save the character returned in a tmp.txt file
    system(cmd);
    %save temp results
    f2 = fopen('tmp.txt','r');
    tmp = fgets(f2); %this is the tmp character I want to compare against
    if strcmp(M(i),tmp)
        count = count+1;
    end;  if true
    % code
  end

Mini 2013-2-25

oh dear I realised my mistake... its not working because the characters in M are stored with the apostrophes in the format: 'U','C','Y'... but in the variable tmp, the character are just stored as: U, C, Y... is there a way to solve this kind of problem?

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Azzi Abdelmalek 2013-2-25

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/64833-comparing-characters-in-a-matrix#answer_76400

编辑：Azzi Abdelmalek 2013-2-25

在 MATLAB Online 中打开

strcmp(M(i),tmp)

9 个评论
显示 7更早的评论隐藏 7更早的评论

Azzi Abdelmalek 2013-2-25

编辑：Azzi Abdelmalek 2013-2-25

在 MATLAB Online 中打开

The problem is tmp is not equal to 'U' but to something like

'U ' % with spaces

Try this to remove space from tmp

strcmp(M(1),strtrim(tmp))

Mini 2013-2-25

omg this works, thank you sooooooooo much!!! (: Hope you have a great week ahead!! (:

请先登录，再进行评论。

更多回答（1 个）

Matt J 2013-2-25

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/64833-comparing-characters-in-a-matrix#answer_76399

编辑：Matt J 2013-2-25

在 MATLAB Online 中打开

count=sum([M{:}]==tmp)

4 个评论
显示 2更早的评论隐藏 2更早的评论

Mini 2013-2-25

oh thank you for the explanation... now i understand where you are coming from.. but this tmp changes value in every iteration, so in that case I will have to check it in every iteration right?