Create an array of handle objects using for-loop

I created my own handle Class called CModelDeficit, and now want to create an array of this objects with slight difference in parameters:

        function M = meta(obj)
            M = [];
            p = obj.getParameters(); %this gives me parameters of initial object
            p(3) = 0.1;
            p(4) = 0.1;
            M = [M,CModelDeficit(p)]; %CModelDeficit(p) is a constructor of a class with parameters 'p'
            p(3) = 0.2;
            p(4) = 0.2;
            M = [M, CModelDeficit(p)];
        end

Calling this function returns me a 1x2 CModelDeficit, just as i wanted it.

But when i try make the very same process using for-loops:

         function M = meta2(obj)
            M = [];
            p = obj.getParameters();
            for i = 1:0.1:0.9
                for j = 1:0.1:0.9
                    p(3) = i;
                    p(4) = j;
                    M = [M,CModelDeficit(p)];     
                end
            end
        end

returns me just an empty vector.

It seems for me very confusing and illogical, that they have different behaviour.

I always thought, that, in such context, for-loop is a nicer way to write functions, then just typing nearly same thing 81 times.

I would appreciate a detailed explanation about inner structure of for-loops in this circumstances.

Thank You,

Pavel Bykov

Answer 1

[Matt J]

Undoubtedly, you meant to have

    for i = 1:-0.1:0.9
        for j = 1:-0.1:0.9

[Pavel Bykov]

Indeed, actually i meant 0.1:0.1:0.9. But same thing. I guess just too tired after 5 hours. Thank you very much!

[Matt J]

Or maybe this

         function M = meta2(obj)

            p = obj.getParameters();
            
            vals=0.9:0.1:1; 
            N=numel(vals);
            
            for i = N:-1:1
                for j = N:-1:1
                    p(3) = vals(i);
                    p(4) = vals(j);
                    M(i,j) = CModelDeficit(p);     
                end
            end
        end