Ask Your Question

# Plot Series of 3D Direction Vectors (Not All from Origen)

Hi,

I'm trying to plot a series of vectors. I've pasted what I have below. The problem is that I want to plot the second vector, starting from the end of the first vector. If I run the commands below, I get two vectors plotted as I want (with arrows) but they are both from the origin.

I tried looking at MATPLOTLIB to see what to do but I got stuck.

Is there an easy way to plot a series of vectors in the way that I want?

a=vector([1,1,1])
b=vector([2,2,3])
aPlot=plot(a, legend_label='Vector a')
bPlot=plot(b, legend_label='Vector b')
AllPlot=aPlot+bPlot
AllPlot.show()

edit retag close merge delete

## 2 answers

Sort by ยป oldest newest most voted
sage: a1=arrow((0,0,0), (1,1,1))
sage: a2=arrow((1,1,1), (2,2,3))
sage: a3=arrow((2,2,3), (3,3,1))
sage: a1+a2+a3

more

## Comments

Thanks very much!

( 2012-07-22 08:53:12 -0500 )edit

The point being of course that a vector "always" starts at the origin, though some books would disagree.

( 2012-07-23 03:55:21 -0500 )edit

You can use the start keyword to give a starting point or vector:

a=vector([1,1,1])
b=vector([-1,2,3])
plot(a)+plot(b, start=a)

more

## Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

## Stats

Asked: 2012-07-22 07:52:05 -0500

Seen: 3,751 times

Last updated: Jul 23 '12