Quiver plotting arrow length

I want to plot a quiver plot of one arrow.

x=1;
y=1;
u=3;
v=4;
quiver(x,y,v,u)

I would expect that the arrow would start at point (1,1) and the length in the x direction would 3 while the length on the y direction would be 4.So the magnitude of the vector would be 5.

But this isn't the case. Can you explain me why? Thank you.

Answer 1

[the cyclist]

Two things:

(1) It looks like you swapped the u and v arguments compared to how you actually want them, so I think you actually want

quiver(x,y,u,v)

(2) There is an automatic scaling that occurs to the arrow (which is described in the documentation). You can turn off that scaling:

quiver(x,y,u,v,0)

I believe that will result in the plot you expect.

[Giorgos Papakonstantinou]

Indeed I had swapped u and v values but if it wasn't your second comment I wouldn't know the answer. Thank you