How to plot quiver with same scale on x and y axis?

Hey, im trying to plot a qiver plot for current speed. In the plot, x-axis is date and y-axis is the velocity. When i plotted the quivers, because of the difference with x and y-axis numbers, the arrows direction came out wrong. I think, its because, while x-axis date values are 7.376115416666666e+05 to 7.376195416666666e+05, and y-axis velocity values are -0.31 to 0.41.

When i create a number vector with y-values by using linspace command and plot the arrows, directions are came out okey. But is that the correct way to do it?

So, how can i set a same scale for both axis? or should i plot the arrows with mentioned above?

Thank you.

[Ahmet Altunsu]

Note: I forgot the the wrong direction plot. here the image:

Answer 1

[Voss]

Have you tried axis equal?

% random quiver plot
d = datenum(now());
x = d:1e-6:d+1e-4;

y = randn(1,101);
u = randn(1,101);
v = randn(1,101);

% compare without axis equal
subplot(1,2,1)
quiver(x,y,u,v)

% and with axis equal
subplot(1,2,2)
quiver(x,y,u,v)
axis equal

[Ahmet Altunsu]

Thats worked. Thank you.