Calling Function within a Function

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Joe
Joe 2012-11-19
Calling a function inside of a another function.
what I would like to do is take
function x = fgIntersect(f, df, g, dg, x0, tol, maxIter)
and calculate the output x using another function,
function [r,rHist,N,fRoot] = newtonRaph(fHan,dfHan,x0,fTol,iterMax)
replacing fHan with h ( h = @ (x) f(x) - g(x)), and dfHan with dh ( dh = @ (x) df(x) - dg(x)).
so I would have:
function [r,rHist,N,fRoot] = newtonRaph(h,dfh,x0, tol,maxIter)
and the output of this function (newtonRaph), r is equal to the output of the previous function (fgIntersect), x.
  1 个评论
Matt J
Matt J 2012-11-19
编辑：Matt J 2012-11-19
The GettingStarted section of the documentation should make it pretty clear how to make function calls inside other functions. It's no different than calling any old stock MATLAB command like SIN, COS, or SUM

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回答（1 个）

Image Analyst
Image Analyst 2012-11-19
So just calculate fHan by calling h(), and calculate dfHan by calling dh(), in advance of you calling newtonRaph(), then pass them in to newtonRaph(). It's a simple process.

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