accumulate in multiple array

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Kafayat Olayinka
Kafayat Olayinka 2019-5-17
评论： Kafayat Olayinka 2019-5-17
I have:
Temperature profiles array for 5 days. such that, temp(heigth,day). however, there are multiple profile in some days which makes the number of profile equal 11.
size of temp = (3650 by 11)
size of day = (1 by 11)
day=[1,1,1,2,2,3,3,3,4,4,5].
I want to:
average temperature for every similar days
such that:
dailyday=[1,2,3,4,5]
temp=(3650 by 5)

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采纳的回答

madhan ravi
madhan ravi 2019-5-17
splitapply(@(x) mean(x,2),Temp,findgroups(Day))
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madhan ravi
madhan ravi 2019-5-17
编辑：madhan ravi 2019-5-17
C=splitapply(@(x) {mean(x,2)},Temp,findgroups(Day));
[C{:}]
%or
[~,~,c]=unique(Day);
C = accumarray(c,1:size(Temp,2),[],@(x){mean(Temp(:,x),2)});
[C{:}]
Kafayat Olayinka
Kafayat Olayinka 2019-5-17
Worked perfectly. Thank you.

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更多回答（1 个）

Walter Roberson
Walter Roberson 2019-5-17
[mean(temp(:,1:3),2), mean(temp(:,4:5)), mean(temp(:,6:8)), mean(temp(:,9:10)), temp(:,11)]
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Kafayat Olayinka
Kafayat Olayinka 2019-5-17
Thanks. How should I write the loop assuming Days are more than 5 days and each day may have multiple temperature profiles. How should I average each temp profile per day?

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