Create a top hat function

Hello, Im trying to create a top hat function (that is 0 everywhere except between -halfpix & halfpix). the fucll width of the top hat (2* halfpix) is symetrical about the yaxis.

i've created it based in discrete values as below but I would like it as a general function.

x = -20:0.1:20;
t = zeros(1,length(x))
t(x>=-halfpix & x<halfpix) = 1; 

Answer 1

[Rik]

If you realize that you are marking all true locations with 1 and leaving all false as 0, you can use that to make an anonymous function that only casts you logical statement to double.

[Jason]

do you mean have an if statement in the anonymous functio, I didnt think this was possible

[Rik]

You don't even need an if, just double:

x=1:10;
double(x>5)

ans = 1×10

0 0 0 0 0 1 1 1 1 1

[Jason]

But thats if x>5, id also want if x<-5

[Rik]

You already know how to do that. You already used the code in your own question:

t=@(x) double(x>=-halfpix & x<halfpix)

[Jason]

Perfect, thankyou