MATLAB: Execute a list of functions

functionloopMATLAB

How do I store a list of user-defined function in an array and execute it in a loop one by one?

[d] = func1(a), 
[e] = func2(b), 
[f] = func2(c) ...

Best Answer

myfun = {@func1, @func2, @func2} ; 
vars = {a, b, c};
for K = 1 : length(myfun)
   result{K} = myfun{K}(vars{K});
end

Related Solutions

MATLAB: How do you create a composite function in matlab

f = @sin;
g = @cos;
% define it two different ways
fg = @(x) f(g(x));
h = @(x) sin(cos(x));
% Compare the two approaches
x = 0:0.1:2*pi;
max(abs(fg(x)-h(x)))
ans = 0

Or you could write a function file.

function y = myfun3(x)
y = func1(func2(x, 3)); % fixing p = 3
end

MATLAB: How to call functions indirectly

You can do it with only additions to your code

F1 = @(a)length(a);
F2 = @(b)sum(b);
F3 = @(c)min(c);
X=rand(1,100);
Myfuns={'F1','F2','F3'};
for ii = 1:length(Myfuns)
  eval(['Myfuns{ii} = @(x)', Myfuns{ii}, '(x)']);
end
for i=1:length(Myfuns)
     Y(i)=Myfuns{i}(X);
end

If the functions are contained in files that exist on the path, then you can use str2fcn instead of eval

Myfuns = cellfun(@str2func, Myfuns, 'UniformOutput', false);

The best is to define the function handles directly:

Myfuns={@(x)F1(x),@(x)F2(x),@(x)F3(x)};

Best Answer

Related Solutions

MATLAB: How do you create a composite function in matlab

MATLAB: How to call functions indirectly

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