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how to query string exactly in matlab

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peter huang 2022-9-1

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1792290-how-to-query-string-exactly-in-matlab

评论： Rik 2022-9-1

采纳的回答： Stephen23

TEST.xlsx

I have a composition table. If I enter matlab, I will get a cell of n*1

e.g. file attached

If I finish reading matlab

I want to find the location of M2 how can I find it

I have tried using

Index = find(contains(str,'M2'));

But this will output all the components that contain the M2 name

I want to output only the position of an M2

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采纳的回答

Stephen23 2022-9-1

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https://ww2.mathworks.cn/matlabcentral/answers/1792290-how-to-query-string-exactly-in-matlab#answer_1039370

编辑：Stephen23 2022-9-1

在 MATLAB Online 中打开

TEST.xlsx

C = readcell('TEST.xlsx')
C = 6×1 cell array
    {'M2' }
    {'SM2'}
    {'M23'}
    {'S1' }
    {'O1' }
    {'K1' }
X = matches(C,'M2')
X = 6×1 logical array
   1
   0
   0
   0
   0
   0

or

X = strcmp(C,'M2')
X = 6×1 logical array
   1
   0
   0
   0
   0
   0

TIP for the future: scroll to the bottom of the CONTAINS documentation page, you will find a list of related functions, including MATCHES and many others. Browsing the MATLAB help is a very useful skill.

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Rik 2022-9-1

Another related function: ismember, which is mostly similar in this context to the matches function.

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