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fevaln: feval with control of the order of the outputs

version (1.38 KB) by Sky Sartorius
Return the nth output first. Especially useful for defining anonymous functions for use with search.


Updated 16 Oct 2015

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Syntax: [y1,...,yn] = fevaln(ind,f,x1,...,xn)
ind - Index of output to return or vector of indices to determine the order of outputs.
f - Function handle or function name.
x1,...,xn - Function arguments.
y1,...,yn - Output arguments returned in the desired order.

Examples from help:
Example 1: Find y coordinate of a point at x = pi that is 5 units away from the origin.
f = @(y) fevaln(2,'cart2pol',pi,y) - 5;
y = fzero(f,4)

Example 2: Create an anonymous function mysize that return dimensions of the input as [N,M] instead of [M,N].
mysize = @(x) fevaln([2,1],'size',x)
x = repmat(zeros(5,7),2,3);
[m1,n1] = size(x)
[n2,m2] = mysize(x)
arrayWidth = mysize(x)


Cite As

Sky Sartorius (2019). fevaln: feval with control of the order of the outputs (, MATLAB Central File Exchange. Retrieved .

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MATLAB Release Compatibility
Created with R2015b
Compatible with any release
Platform Compatibility
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