Fir filter move pi to left

Hi, I have making a fir filter but I have a little error, the result will have to look like this: <https://i.gyazo.com/d2065d0ae1a2d6401a49db4e28ff7ad1.png>

I obtain this:

and the code problem is this: Omd = 0:2*pi/N:2*pi-2*pi/N

How I move the graphic pi to the left??

Answer 1

[Yuebin Zhou]

The line you pointed out looks correct. For this issue, you can possibly check how the axis was created.Is Xlim correct?