Averaging in a cell array

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avantika
avantika 2014-9-11
评论： Andrei Bobrov 2014-9-12
Hi!
I have a cell array named data (4856x24). The data looks as follows
I want to write a function that averages out the values in each row for positive emotions (Happy,Romantic,Devotional,Calm) and negative emotions(Angry,Longing,Sad,Tensed).The averaged out value column names should be positive and negative respectively. Can anyone pls help. Thanks in advance.
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Adam
Adam 2014-9-11
I'm not sure what you mean by averaging out when the inputs are strings.
I would suggest you use a struct or table (if you are using Matlab 2014) though for your data as having column headings as the first row of a cell array is a lot less easy to work with than having them as fields of a struct or table headings.
avantika
avantika 2014-9-12
编辑：avantika 2014-9-12
Hi!
I am using matlab 2013a.

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Andrei Bobrov
Andrei Bobrov 2014-9-11
t1 = ~cellfun('isempty',regexp(data(1,:),'Happy|Romantic|Devotional|Calm'));
t2 = ~cellfun('isempty',regexp(data(1,:),'Angry|Longing|Sad|Tensed'));
out = [data(1,:);cell(1,size(data,2))];
out(2,t1) = num2cell(mean(cell2mat(data(2:end,t1))));
out(2,t2) = num2cell(-mean(cell2mat(data(2:end,t2))));
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avantika
avantika 2014-9-12
Thanks a lot! I was able to this myself, by modifying your code a bit!
Andrei Bobrov
Andrei Bobrov 2014-9-12
Hi Avantika! I beg to fulfill the request by Sean, he will show us a more better solution with table array.

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Sean de Wolski
Sean de Wolski 2014-9-11
编辑：Sean de Wolski 2014-9-11
If you convert that to a table (cell2table) and covert the feelings to a categorical, you can then use grpstats and varfun to do this for you, grouping by whatever you want.
If you post the mat file (as a zip) I can help you through these steps, it'll be much simpler and easier to understand than regular expressions/cellfun.

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