How do I organize a table using a specified cell array?

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Aryan Cross 2020-11-12

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评论： Star Strider 2020-11-12

https://www.mathworks.com/help/matlab/matlab_prog/access-data-in-a-table.html

In the example found in this documentation, how would I index the data by Gender? Such as if I wanted a new table selecting only rows with {'Male' } or {'Female'}?

I am wondering if it is different than:

rows = (T.Smoker==true & T.Age<40);

T(rows,:)

as it is a cell. Thank you.

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Star Strider 2020-11-12

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One approach is to use the findgroups function:

load patients
T = table(Age,Gender,Height,Weight,Smoker,...
    'RowNames',LastName);
[Grp,ID] = findgroups(T.Gender);
Males = T(Grp==2,:); 

The ‘ID’ variable indicates that these are sorted lexiically, so 1=Female, and 2=Male.

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Aryan Cross 2020-11-12

Thank you!

Star Strider 2020-11-12

As always, my pleasure!

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