Register to reply

Defining piecewise function in matlab

by tmpr
Tags: defining, function, matlab, piecewise
Share this thread:
Oct27-10, 12:46 AM
P: 5
How would you write piecewise functions in matlab that can take vector inputs?

Here's a function that I'm trying to write.
function y=g(x)
if x==0
If I call g([0,pi/2]), I want it to return [0,2/pi], but what I get instead is [NaN,2/pi]. I'm guessing when I write x==0, matlab is comparing the entire input to 0.
Phys.Org News Partner Science news on
Experts defend operational earthquake forecasting, counter critiques
EU urged to convert TV frequencies to mobile broadband
Sierra Nevada freshwater runoff could drop 26 percent by 2100
Nov3-10, 12:30 AM
P: 333
Try this to eliminate the problem at x=0.

g = @(x) 1.*(x==0) + (x~=0).*sin(x)./(x+(x==0));
t=[0 pi/2];

Register to reply

Related Discussions
MATLAB - piecewise defined Fn as periodic Engineering, Comp Sci, & Technology Homework 1
Defining implicit function given a parametric function Calculus & Beyond Homework 1
Finding constants in a piecewise function that allow the function to be differentiabl Calculus & Beyond Homework 5
We need help on piecewise function... General Math 11
Piecewise function Calculus 1