plot vectors head to tail

hello I want to plot some vectors heads to tails in matlab.what should I do?I have found the compass command but it plots all of the vectors from the origin.

[thiago rech]

Did you find another alternative? I am looking for something that could be used in simulink?

Answer 1

[Matt Fig]

I show you two methods. Both have their uses, so I'll let you decide which fits your needs:

% Make a vector from (2,3) to (7,8)
axes('pos',[0 0 1 1]);
axis([0 10 0 10])
H = annotation('arrow',[.2 .7],[.3 .8])

Notice, the annotation position is in terms of normalized figure units, not axes units. So if you don't want your axes to fill the figure, or if you want to not have "nice" limits (0-10), you have to do some math. It is not too hard, you just have to do some tweaking.

Another approach is to use the QUIVER function:

% Make a vector from (2,3) to (7,8)
cla
quiver(2,3,5,5)
axis([0 10 0 10])

[jorjijon]

thank you.but by using quiver function the vector will be plotted from x=2 to x=6.5 and from y=3 to y=7.5 instead of x=7 and y=8.why? another question is that with the first method how can I plot a vector from (-2,-3) to (7,8)?

[Matt Fig]

If you read the help for QUIVER (never a bad idea when you encounter a function and have a question about it!!), you will see that you need to tell it to scale to 0 to get what you want...

cla
quiver(2,3,5,5,0)
axis tight

Please read this:

doc quiver

[Gennaro Arguzzi]

Hello @Loginatorist, can you explain me your code please? I read the documentation, but it's difficult to pick up the right information.

I tried to plot the array [x1=3,y1=0]-->[x2=-1,y2=7]. Do to it I wrote the code:

%X=x2-x1=-1-3=-4
%Y=y2-y1=7-0=7
quiver(3,0,-4,7)

but I got the array [x1=3,y1=0]-->[x2=-0.6,y2=6.3]. How come?

[Jan]

Disable the scaling:

quiver(3,0,-4,7, 0)