I keep getting an error in trying to access elements of an array that is defined as a function. Consider the foloowing function that demonstrates my issue:
test = @(t) [t, t^2];
which takes in the time parameter, t, and returns a 1x2 array of floats that depend on that value of t. Now, I want to define a function, x = @(t) to be the first element of the 1x2 array returned by test(t).
How can I do this? I have tried the following:
x = @(t) test(t)(1). However, this doesn't work. Specifically, Matlab considers (t)(1) to be a nested index, which is strictly not allowed. The error message returned by Matlab is "Invalid array indexing or function call. Chaining outputs after parenthesis is not supported".
How can I achieve what I described?
Note that test is an example function, my actual function is a little more involved.
EDIT (Additional info based on answers)
Based on answer I received, it is worth clarifying that I do not have access to the function x(t). I.e. I am working with vectors that define the solution, which in our above example would read
test = @(t) [ x(t), y(t), z(t) ] % This step is yielding after some pre-calculation that bears no signifcance to the question
The rest of the calculation requires knowledge of just x(t) and z(t), so I would like to define these functions by accessing elements of test.
