the piecewise function runs out a weird figure
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function codes are as this
function f = myfun(x)
if (x<1);
f=x.^2 ;
else
f=x;
end
end
main program codes are as this
clc;
clear all;
close all;
x=0:0.1:10;
y=myfun(x);
plot(x,y)
a simple figure but a queer figure,why
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/208052/image.png)
1 Kommentar
Adam Danz
am 12 Mär. 2019
Hint from
doc if
"An expression is true when its result is nonempty and contains only nonzero elements (logical or real numeric)."
Antworten (1)
Voss
am 3 Jun. 2022
x=0:0.1:10;
y=myfun(x);
plot(x,y)
function f = myfun(x)
idx = x < 1;
f = zeros(size(x));
f(idx) = x(idx).^2;
f(~idx) = x(~idx);
end
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