How to apply function in vector form variable?

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Jinsu Kim
Jinsu Kim 2018-10-16
评论： Jinsu Kim 2018-10-16
Hi guys, I want to modify below codes.
In respect to every value of T, I want to apply below logic. T is N by 1 matrix. (ex: T = [ -1 2 0 1 0 3 -3 5 ... 0 ]' )
function f1 = function_1(T)
if T <= 0
function_1 = T*T ;
elseif ( 0< T ) && ( 1 <T)
function_1 = T + 2 ;
else (T >= 1)
function_2 = T + 3 ;
The thing is that if I run that code, conditional statement does not work. How can I modify it?
Thanks in advance:D

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Matt J
Matt J 2018-10-16
编辑：Matt J 2018-10-16
You should be using logical indexing expressions, like in the following.
function S = function_1(T)
S=nan(size(T)); %pre-allocate
cond1= T<0;
S(cond1)=T(cond1).^2;
cond2=T>0 & T<1;
S(cond2)=T(cond2)+2;
etc...

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