How do I change axes scale in a surface plot by a predefined factor?

94 views (last 30 days)
Iron1759
Iron1759 on 3 Jan 2021
Answered: Iron1759 on 14 Jan 2021
Hello,
I have a surface plot -
on x axis - [0,1,2.... 15];
on y axis - [0,1,2,...50];
I'd like to change the axes scale by multiply these two vector by a factor (different one on each axis), for exmaple by 12.5578 and thus changing only the axes lables.
I'm familair with XtickLabel and YTickLabel but I think it's less applicatble, mainly becaue this factor is not round.
Real life example - for instance when you want to change reperesntation from pixles to real units without changing the data.
Any thoughts?

Accepted Answer

Iron1759
Iron1759 on 14 Jan 2021
Thanks, it works..

More Answers (1)

Mischa Kim
Mischa Kim on 3 Jan 2021
Iron, if it just about changing the labels simply use xticklabels(). See the example below:
x = linspace(-10,10,200);
y = cos(x);
plot(x,y)
xticklocs = [-3*pi -2*pi -pi 0 pi 2*pi 3*pi];
xticks(xticklocs);
myfac = 10; % this would be your 12.5578
xticklabels(cellstr(num2str(xticklocs'*myfac)));
  4 Comments
Mischa Kim
Mischa Kim on 10 Jan 2021
See this example:
x = linspace(-10,10,200);
y = cos(x);
figure(1)
plot(x,y)
xticklocs = [-3*pi -2*pi -pi 0 pi 2*pi 3*pi];
xticks(xticklocs);
figure(2)
plot(x,y)
xticklocs = -400:80:400; % these are the nice numbers
myfac = 400/(3*pi);
xticklabels(cellstr(num2str(xticklocs.')));
xticks(xticklocs/myfac);
If this does not help, share your code so I can provide specific input.

Sign in to comment.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!