MATLAB: Having trouble making a surface plot, was wondering if anybody could help me out.

surfsurfacesurface plot

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You have 48 years of income information but only 47 years. If you add one more year to your x then your code will produce output.

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MATLAB: Data frequency conversion -cell matrix

n = cellfun(@(x)x/2,A(:,3:end),'un',0);
Out = [];
for ii = 1:size(A,1)
    if strcmp(A(ii,2),' ')
        Out = [Out; A(ii,:)];
    else
        [~,k] = ismember(A{ii,2}(1:2),{'JF','MA','MJ','JA','SO','ND'});
        y = A{ii,2}(4:end);
        Out = [Out;
               [A(ii,1),{[sprintf('%d',k*2-1),'/',y]},n(ii,:);
                A(ii,1),{[sprintf('%d',k*2),'/',y]},n(ii,:)]];
    end
end

MATLAB: Linking an element in the for loop with the result from the previous iteration

You need to put the withdrawal rate in as well as the inflation rate.

I’m not certain whether you want to add inflation before or after you factor in the withdrawal, so see if this works for you:

Inipot = 200000; %The initial amount invested
Withd = 0.04; %The withdrawal rate
Infrate = 0.03;%Inflation rate
A= Inipot*Withd ; %Withdrawal amount
for idx = 1:20,
      if idx ==1
          out = A;
      else
          out(idx) =[(1+Infrate)* A];                     % Add Inflation
          A = A*Withd;                                    % Withdrawal
      end
  end
figure(1)
semilogy(out)
grid

I added the plot as a check on the result.

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MATLAB: Data frequency conversion -cell matrix

MATLAB: Linking an element in the for loop with the result from the previous iteration

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