How to loop both years and months simultaneously?

I am a beginner in matlab. I am running Tethys and Clara modelling code, and i want to find the mean of each month for 4 years. I am using the "datam" function to do this. I am able to get a plot for 12 months of a particular year.

figure(1);

hold on

X1 = [];

Y1 = [];

X2 = [];

Y2 = [];

for i=1:12

I=(Datam(:,1)==2013)&(Datam(:,2)==i);

ET_obs_2013 = ET_obs(I==1);

ET_obs_mean = mean(ET_obs_2013);

ET_sim_2013 = ET_sim(I==1);

ET_sim_mean = mean(ET_sim_2013);

X1 = [X1,i];

Y1 = [Y1,ET_obs_mean];

X2 = [X2,i];

Y2 = [Y2,ET_sim_mean];

plot(X1,Y1);

plot(X2,Y2);

end

Could you help me check this as well as help with what am looking for?

Answer 1

[Image Analyst]

Is Datam a function? Looks like it's a 2-D matrix, not a function.

What do the rows and columns of Datam represent?

Attach Datam in a .mat file

save('answers.mat', 'Datam');

then attach answers.mat with the paper clip icon.

If rows are years and columns are months, then just do

monthlyMeans = mean(Datam, 1);

This will give you 12 means, one for each month (Jan-Dec) and averaged over all years (rows).