How to set a certain ratio for x-y axis?

As in the image, the difference each step for y-axis is 0.2, for x-axis is 1. I want to keep x-axis as 1, but change y-axis to 0.5 for each step and keep the width of the picure unchanged. So I shrink this picture vertically 2.5 times.

Is there a general method to do this? I appreciate your answer!

Answer 1

[Mischa Kim]

Toby, I believe you want to change the ticks, correct? Use

 set(gca,'YTick',-1:0.5:1)

after the plot command.

[Iain]

You might want to change the axis settings.

 ylim([-2.5 2.5])

that ought to do it too.

you might want to change the whole axis settings to line things up a bit better:

 axis([-pi pi -2.5 2.5]) % change the values to suit.

[toby]

Thanks for your reply. What I want is actually changing the ratio of the figure. I want to keep x-axis -4:1:4 but make y-axis -1:0.5:1. I tried axis([]), it does not work.

Answer 2

[Image Analyst]

Try using set() to adjust the 'Position' property to stretch the width and height of the graph to whatever you want

set(gca, 'Units', 'normalized', 'Position', [0,0,.5, .2]);