How to get monthly averages from daily data?

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Hello,
I have an excel file containing 4 column. The first column contain year month day (YEARMODA), the second column contain daily Maximum Temperature (MAX T), the third column contain daily Minimum Temperature (MIN T) and fourth column contain Precipitation data (PRCP). In first column there are missing days for every month its hard to find them one by one. I need monthly average values of MAX T, MIN T and PRCP. The given and required form of data is attached.

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KSSV
KSSV 2017-11-23
编辑:KSSV 2017-11-23
[num,txt,raw] = xlsread('A.xls') ;
date = datevec(num2str(num(:,1)),'yyyymmdd') ;
years = date(:,1) ;
months = date(:,2) ;
%%Get average
[Y,ia,ib] = unique(years) ;
[M,ia,ib] = unique(months) ;
iwant1 = zeros(length(Y),length(M)) ; % Average of max T
iwant2 = zeros(length(Y),length(M)) ; % Average of min T
iwant3 = zeros(length(Y),length(M)) ; % Average of PRCP
for i = 1:length(Y)
idx_Y = years==Y(i) ;
data = num(idx_Y,2:end) ;
YM = months(idx_Y) ;
for j = 1:length(M)
idx_M = YM==M(j) ;
iwant1(i,j) = mean(data(idx_M,1)) ;
iwant2(i,j) = mean(data(idx_M,2)) ;
iwant3(i,j) = mean(data(idx_M,3)) ;
end
end
  3 个评论
Muhammad shahid
Muhammad shahid 2017-11-23
Dear KSSV
Bundle of thanks for guidance and spending your time to solve this issue. The provided matlab code worked for me and it saved my time. This code will be very valuable for hydrologists. I will recommend this code if some one is using GHCN precipitation and temperature data for analysis.

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