how can I generate the function n without having to resort to Inline function?

x=[-2:0.01:2]; 
p = [(x>=0)-(x>=1)];  
r = p.*x;
n = r(x)+r(-x+2);

the last line is giving me an error, how can I achieve last line without having to use inline function and using vector method?

[Star Strider]

What do you want r(x) to do?

What do you want n to be?

[Atique]

@StarStrider I want n to be a function that has the function r + the function r with the transformation of (-x+2). I apologize for this beginner question, this is my first matlab problem.

so lets say r(x) = p(x)*x and I want n(x)=r(x)+r(-x+2)

I could easily do this problem with inline function but I am trying to do it with vector method.

[Image Analyst]

Does the 2 really mean 2, or does it mean 2 elements? In the first case, x goes from the range -4 to 0 but p and r is not defined for values in the range -4 to -2, because x doesn't go that low, so what do you want to do there? For the second case you can use conv().

Answer 1

[Star Strider]

You are correct, inline functions are being abandoned in favour of ‘anonymous functions’.

Using anonymous functions here, I believe I understand what you want:

x=[-2:0.01:2]; 
p = @(x) [(x>=0)-(x>=1)];  
r = @(x) p(x).*x;
n = r(x)+r(-x+2);

figure(1)
plot(x,n)
grid
xlabel('x')
ylabel('n')

I added the plot simply because it makes it easier to see the output.

[Atique]

YES! Thank you! I had no idea about the '@(x)' anonymous function!

[Star Strider]

My pleasure!

Meet your new best friend, Anonymous Functions! They are extremely useful in a variety of situations.