String Matlab获取表中匹配两个精确字符串的行的平均值
我在Matlab中有一个表格,格式如下:String Matlab获取表中匹配两个精确字符串的行的平均值,string,matlab,average,String,Matlab,Average,我在Matlab中有一个表格,格式如下: sub type window mean stdev rms _____ ____ ______ _______ ______ ______ 'S03' 'e4' 'w1' -0.6357 0.3274 0.715 'S03' 'e4' 'w1' -0.591 0.3106
sub type window mean stdev rms
_____ ____ ______ _______ ______ ______
'S03' 'e4' 'w1' -0.6357 0.3274 0.715
'S03' 'e4' 'w1' -0.591 0.3106 0.6676
'S03' 'e4' 'w2' -0.4616 0.3607 0.5857
'S03' 'e4' 'w2' -0.457 0.3387 0.5687
'S03' 'e4' 'w2' -0.5737 0.2689 0.6335
'S03' 'e4' 'w3' -0.4818 0.2139 0.5271
'S03' 'e4' 'w3' -0.4272 0.1523 0.4536
'S06' 'e4' 'w1' -0.6357 0.3274 0.715
'S06' 'e4' 'w2' -0.591 0.3106 0.6676
'S06' 'e4' 'w2' -0.4616 0.3607 0.5857
'S06' 'e4' 'w2' -0.457 0.3387 0.5687
'S06' 'e4' 'w2' -0.5737 0.2689 0.6335
'S06' 'e4' 'w3' -0.4818 0.2139 0.5271
对于每个主题,例如上面显示的S03和S06,我需要获得上面显示的每个窗口3的平均值、标准偏差和均方根值:w1-w3
因此,我需要检查主题字符串第1列和窗口字符串第3列,以检查行是否属于同一主题和窗口,然后计算平均值、stdev和rms列的平均值。我曾尝试将strcmp与任何一款产品一起使用,但似乎无法使其发挥作用。您可以与一起使用,如下所示:
C = {
'S03' 'e4' 'w1' -0.6357 0.3274 0.715
'S03' 'e4' 'w1' -0.591 0.3106 0.6676
'S03' 'e4' 'w2' -0.4616 0.3607 0.5857
'S03' 'e4' 'w2' -0.457 0.3387 0.5687
'S03' 'e4' 'w2' -0.5737 0.2689 0.6335
'S03' 'e4' 'w3' -0.4818 0.2139 0.5271
'S03' 'e4' 'w3' -0.4272 0.1523 0.4536
'S06' 'e4' 'w1' -0.6357 0.3274 0.715
'S06' 'e4' 'w2' -0.591 0.3106 0.6676
'S06' 'e4' 'w2' -0.4616 0.3607 0.5857
'S06' 'e4' 'w2' -0.457 0.3387 0.5687
'S06' 'e4' 'w2' -0.5737 0.2689 0.6335
'S06' 'e4' 'w3' -0.4818 0.2139 0.5271
};
T = cell2table(C,'VariableNames',{'sub' 'type' 'window' 'mean' 'stdev' 'rms'});
[G,W,S] = findgroups(T.window,T.sub);
R_mean = splitapply(@mean,T.mean,G);
R_stdev = splitapply(@mean,T.stdev,G);
R_rms = splitapply(@mean,T.rms,G);
result = table(W,S,R_mean,R_stdev,R_rms);
输出:
W S R_mean R_stdev R_rms
____ _____ __________________ _________________ _________________
'w1' 'S03' -0.61335 0.319 0.6913
'w1' 'S06' -0.6357 0.3274 0.715
'w2' 'S03' -0.497433333333333 0.322766666666667 0.595966666666667
'w2' 'S06' -0.520825 0.319725 0.613875
'w3' 'S03' -0.4545 0.1831 0.49035
'w3' 'S06' -0.4818 0.2139 0.5271