How to let y-axis ticks increase by 2?

How to let y-axis ticks increase by 2? The number on the y-axis should also be in 2 decimal places. What codes will I use?

Answer 1

[Azzi Abdelmalek]

Look at this

t=0:0.001:10;
y=12.5*sin(t)
plot(t,y)
yt=get(gca,'ylim')
nyt=yt(1):2:yt(2)
ytl=cellfun(@(x) sprintf('%.2f',x),num2cell(nyt),'un',0)
set(gca,'ytick',nyt,'yticklabel',ytl)