How to use gca handles to change xtick properties

I am using MATLAB 2016, and I still can't figure out or find helpful documentation for how to change gca's xtick object. When I run my code I see the results in the command window, but when I plot it I see no change in my graph. Here is my code..

x = [0:0.001:(2*pi)]; y = (sin(x)).^2; figure(1) plot(x,y,'r') xlim([0 (2*pi)]); ax = gca; ax.XTick = [0 pi 2*pi]

Am I missing anything?

Answer 1

[Pham Dang]

Hi, you should use the set command to set your Xtick property.

 set(gca,'Xtick',[0 pi 2*pi])

[Alexander Greene]

I tried that and got this error

Function 'subsindex' is not defined for values of class 'struct'.

Error in handlesPractice (line 6)

Is there anything else I may be missing?

[Pham Dang]

Hi, the exact following code works for me :

 x = [0:0.001:(2*pi)]; 
 y = (sin(x)).^2; 
 plot(x,y,'r'); 
 xlim([0 (2*pi)]);
 set(gca,'Xtick',[0 pi 2*pi])

(The subsindex function is not used in those lines. Are you calling it for a specific purpose ?)