MATLAB: Mean over time with a for loop

for loopmean

I'm new to Mathlab and have a problem doing something i consider should be simple. I have a dataset with a a column fyear (meaning fiscal year end) and an other column with associate dividend yield (DY). fyear goes for 2002 to 2012 and i want to create a loop doing the mean of DY for 2002 then 2003, then 2004 , … until it reach 2012. So basically and want the mean of DY for each year. There over 8000 DY per year.

Thank you

Best Answer

I found the answer i was looking. I use means = grpstats(variable you want to have the mean, variable based on)

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MATLAB: Help with how to include a mean value calculator in a for-loop

Does this do what you want?

arsol2015 = mean(reshape(sol2015,24,[]));

Although not needed, your loop could be this

for i = 1:24:length(sol2015)

MATLAB: How to do a conditionnal mean

You can use accumarray() to do this:

FYEAR = [2001; 2001; 2002; 2002];
DY = [1; 2; 5; 6];
[uniqueYear,i,j] = unique(FYEAR);
meanDY = accumarray(j,DY,[],@mean)

uniqueYear is the list of years in your list, and meanDY is the mean values.

There are many way to plot them. Here is a simple one:

plot(uniqueYear,meanDY,'.-')

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Related Solutions

MATLAB: Help with how to include a mean value calculator in a for-loop

MATLAB: How to do a conditionnal mean

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