Getting error Data variables must be numeric or logical when doing grpstats

Question

Janani Thiyagarajan 2017-12-4

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/370863-getting-error-data-variables-must-be-numeric-or-logical-when-doing-grpstats

回答： KL 2017-12-4

here is the sample data I have; ( 6 columns) Variable called t2 with values (shown below with sample data) I am trying to get mean by condition i tried statarray = grpstats(t2,'responseTime'); getting error Error using dsgrpstats (line 266) Data variables must be numeric or logical. thanks

t2 =

157×6 table
    subjID    trialID    condition    correctChoice    response    responseTime
    ______    _______    _________    _____________    ________    ____________
        3         1            'no'             'no'        970.53      
        5         1            'no'             'no'        717.17      
        9         1            'yes'            'no'         760.6      
       10         1            'no'             'no'        778.87      
       13         1            'yes'            'yes'       710.43      
       14         1            'yes'            'yes'       820.12      
       16         1            'yes'            'yes'       661.56      
       18         1            'yes'            'yes'       718.79      
       19         1            'no'             'no'        839.54      
       20         1            'yes'            'no'        564.83      
        1         2            'yes'            'yes'       636.25      
        2         2            'no'             'no'        565.14      
        4         2            'no'             'yes'       660.87      
        6         2            'no'             'yes'       815.26      
        7         2            'no'             'yes'       659.75      
        8         2            'yes'            'yes'       617.04      
       11         2            'yes'            'no'        617.66      
       12         2            'yes'            'yes'       865.73      
       15         2            'no'             'yes'       907.28

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Answer 1

KL 2017-12-4

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/370863-getting-error-data-variables-must-be-numeric-or-logical-when-doing-grpstats#answer_294536

在 MATLAB Online 中打开

use varfun,

https://www.mathworks.com/help/matlab/ref/varfun.html

t2_mean = varfun(@mean,t2(:,[1 2 3 6]),'GroupingVariables',{'condition'})

I've indexed specific columns of the table since you have 'yes' and 'no' instead of booleans, anyway, the idea is to use condition column as grouping variable and calculate mean of all the other columns.