MATLAB: How to define a piecewise anonymous function

Question

Hello everyone,

the example code

syms x
continuous_function = x^2+x;
matlabFunction(continuous_function,'Vars',x)

gives me the anonymous function

 @(x)x+x.^2

I would like a similar result for piecewise functions. However, the code

syms x
piecewise_function = piecewise( 0<x<1, x, 'otherwiseVal', 0 );
matlabFunction(piecewise_function,'Vars',x)

does not work.

Thanks for any help!

Answer 1

You need to use ‘logical indexing’:

piecewise_function = @(x) (x.^2+x) .* ((0<x) & (x<1));
x = linspace(-1, 2);
figure
plot(x, piecewise_function(x))

producing: