fprintf with cell and double values within a for loop

There is a problem with the code down below where it will not display the mean values for (one,two,three) for the corelating string names (iter_names). How would I be able to print the fprintf statements successfully. The code is having trouble with cell and double displaying with the fprintf function.

iter_names = {'One', 'Two', 'Three', 'Four'};
one = {12, 3, 5, 5};
two = {1,2,3,1};
three = {3,3,4,1};
Values = [one,two,three];
Mean_vals = [];
for iter = 1:3
    mean_vals = mean(Values(iter));
    fprintf('Means for variable %s is %d.2f', iter_names, mean_vals);
    Mean_vals(end+1) = mean_vals;
    if iter == 3
        fprintf('Mean for all values are %d.2f', mean(Mean_vals)); 
    end
end

[Stephen23]

Rather than storing numeric scalars in cell arrays you should store numeric data in numeric arrays, then your code is simpler and much more efficient:

N = {'One', 'Two', 'Three'};
A = [12,3,5,5;1,2,3,1;3,3,4,1] % even better would be as columns, not rows

A = 3×4

12 3 5 5 1 2 3 1 3 3 4 1

M = mean(A,2);
C = [N;num2cell(M.')];
fprintf('Means for variable %s is %.2f\n',C{:});

Means for variable One is 6.25
Means for variable Two is 1.75
Means for variable Three is 2.75

fprintf('Mean for all values is %.2f\n', mean(M)); 

Mean for all values is 3.58

Answer 1

[Star Strider]

The code needed some tweaks.

iter_names = {'One', 'Two', 'Three', 'Four'};
one = {12, 3, 5, 5};
two = {1,2,3,1};
three = {3,3,4,1};
Values = [one;two;three];
Mean_vals = [];
for iter = 1:3
    mean_vals = mean([Values{iter,:}]);
    fprintf('Means for variable %s is %.2f\n', iter_names{iter}, mean_vals);
    Mean_vals(end+1) = mean_vals;
    if iter == 3
        fprintf('Mean for all values are %.2f\n', mean(Mean_vals)); 
    end
end

Means for variable One is 6.25
Means for variable Two is 1.75
Means for variable Three is 2.75

Mean for all values are 3.58

I will let you explore the changes I made, specifically to ‘Values’ (note the substitution of (;) for (,)) and the functions that use them, as well as to the fprintf calls, all needing cell array indexing.

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