how to put two different units on my axis

I have a plot with equal axis but i need the x-axes to have twice the unit as the y. 1:2

how do i do that??

Dorrit

[Andrew Newell]

Do you mean that you want (for example) the X axes to be from 0 to 2 and the Y axes from 0 to 1?

Or do you mean that you want X and Y to be both from 0 to 1 but have twice as many tick marks on the X axis?

[Dorrit]

I mean: if 1cm = one unit on the x-axe then 1cm= two unit on the y-axe.

Answer 1

[Kelly Kearney]

Do you mean you want the length of the axes to be the same, but with a 2:1 ratio? Try adjusting the aspect ratio:

 x = 0:0.1:1;
 y = 2*x;
 plot(x,y);
 set(gca, 'dataaspectratio', [1 2 1]);

[Dorrit]

If I understand you correkt, it's the last line I shal put in my codes?

this one:

set(gca, 'dataaspectratio', [1 2 1]);

will that give me 2 on the y-axe everytime i have 1 on the x-axe?

[Andrew Newell]

Yes. You can also use

daspect([1 2 1])

(see http://www.mathworks.com/help/techdoc/ref/daspect.html).

[Dorrit]

I think, I can make this work. Thank you.

[Dorrit]

Hi, Andrew.

I have tryed daspect, but could only make it work in a 3d plot and not in the 2d plot i'm making not.

I used daspect for my 3d-sphere that you help me with:-)

Answer 2

[Walter Roberson]

Possibly set() XMinorTick 'on' for the axes would be sufficient ?

If not, then set() the XTick to the tick locations you want. (Note: if you do that, then if you zoom or pan then you will want to use the appropriate callback in those modes to create new XTick according to what is visible.)

[Dorrit]

sorry but I don't understand that you mean.