Iterating in function handles
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I need to input function handles, f and g, for the 'dt' and 'dw' components respectively. For example,
g = @(t, x) sig;
would define the function handle for g given a pre-defined array sig. Now, I would like to define the function handle 
, where 
are coefficients that depend on i and j. For the purpose of this example, assume that
. How can I define a single function handle that returns a column vector that does what I want?
, where are coefficients that depend on i and j. For the purpose of this example, assume that. How can I define a single function handle that returns a column vector that does what I want? If it helps, when 
, I was able to do
, I was able to dof = @(t, x) mean(x) - x;
But I'm stuck on how to adapt this to include the 
. I think I need to iterate over i and j inside the function, but don't know if this is correct. Thanks in advance.
. I think I need to iterate over i and j inside the function, but don't know if this is correct. Thanks in advance.4 个评论
Torsten
2022-3-13
Don't use function handles for compliciated expressions. Write functions instead.
Harry Li
2022-3-13
Yes, but the function handle can point to a function.
f = @(t,x)fun(t,x)
%Call SDE with function handle f
function res = fun(t,x)
% Calculate whatever you like
res = something;
end
Harry Li
2022-3-13
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