How to search a table for a string

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Jonathan
Jonathan 2020-3-12
编辑： dpb 2023-1-10
Hi, I have a table of data. One of these columns includes a column which I have labelled 'Participant Data'
I want to search 'Participant Data' for a particular string and return all the index of this table when it does pop up.
Additionally if I have 2 arrays of indices, how to return just the numbers that are in both indices?
Thanks!

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回答（1 个）

Abhisek Pradhan
Abhisek Pradhan 2020-3-16
Searching a table for a string can done using find and strcmp. A combination of both function can be used to search a string:
find(strcmp('YourString',Table));
Refer the following link for model details.
https://www.mathworks.com/matlabcentral/answers/2015-find-index-of-cells-containing-my-string
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Samad
Samad 2023-1-10
Ran in:
strcmp does not work with table, it works with cell. First we have to convert table into cell.
Run the following code
name=["sam"; "jack"];
age=[20'; 27]; height=[4; 5];
tab=table(name, age, height)
tab = 2×3 table
name age height ______ ___ ______ "sam" 20 4 "jack" 27 5
extract the name sam
idx=strcmp("sam",tab)
idx = logical
0
dpb
dpb 2023-1-10
编辑：dpb 2023-1-10
Ran in:
" First we have to convert table into cell...."
No, not really. You do have to reference the variable of interest inside the table, though, yes...
Try the following instead...
name=["sam"; "jack"];
age=[20'; 27]; height=[4; 5];
tab=table(name, age, height);
tab(strcmp(tab.name,'sam'),:)
ans = 1×3 table
name age height _____ ___ ______ "sam" 20 4
Or, with new string variable functions,
tab(matches(tab.name,'sam'),:)
ans = 1×3 table
name age height _____ ___ ______ "sam" 20 4

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