Calculate statistical parameters from certain rows of a matrix

4 views (last 30 days)
BoIs on 12 Aug 2019
Commented: BoIs on 12 Aug 2019
I have data of days and temperature in specific intervals recorded through out that particular day: eg
Day Temp
1 24
1 24.5
1 24.5
2 25
2 25
2 25
3 25.5
3 25.5
3 25.5
and so on for many number of days through. If I want to take the mean of all the temperature values from only day 1, how would I go about doing this using indexing?

Accepted Answer

madhan ravi
madhan ravi on 12 Aug 2019
Wanted=splitapply(@mean,x(:,2),findgroups(x(:,1))) % x(:,1) is Day and x(:,2) is Temperature
% or if you're using version prior to 2015b then:
For only one day it’s simply:
day = 1;

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