Thread: In Matlab, how to refer a self-defined function in another self-defined function?

Dear all,

I have a question on Matlab: when I define a new function in Matlab, I want to use another function defined by myself previously as an input argument, how can I do that?

To be more specific, suppose I have defined a function, say f(x). Now I am going to define a new function g(x)=f(x)+x and using f(x) as one of the input argument in my definition of g(x).

Is there anybody who can help me on this? Thanks a lot in advance.

Originally Posted by analysismath

Dear all,

I have a question on Matlab: when I define a new function in Matlab, I want to use another function defined by myself previously as an input argument, how can I do that?

To be more specific, suppose I have defined a function, say f(x). Now I am going to define a new function g(x)=f(x)+x and using f(x) as one of the input argument in my definition of g(x).

Is there anybody who can help me on this? Thanks a lot in advance.

Define the second function as:

Code:

function rv=g(ff,x)
  rv=ff(x)+x;

Then call with:

Code:

y=g(@f,x);

In the calling code @f is the function handle for the function f.

CB

Thank you so much! It works perfectly as you said.