How can I pass an array to Matlab function?

Hi all, Would you please advise how can I pass an array to Matlab function so that I can use each element in the array to calculate different outputs? Kind regards,

Answer 1

[James Tursa]

This is going to depend on whether the function in question is vectorized or not. E.g., suppose the function is vectorized:

function result = myfun(x)
result = x.^2;
end

Then you would call it like this:

x = whatever
y = myfun(x);

But suppose the function is not vectorized:

function result = myfun(x)
result = x^2;  % <-- Note the use of ^ instead of .^
end

Then you would be stuck with a loop:

x = whatever
y = zeros(size(x));
for k=1:numel(x)
    y(i) = myfun(x(i));
end

Or you could use the arrayfun() function (with the loop hidden in the background):

y = arrayfun(@myfun,x);

The above examples assume that the output of the function for a scalar input is also scalar. If that is not the case then different code would be needed to store the results.

Answer 2

[Keen]

Many thanks, it was really helpful.