Question

What I would like to do is visualise the change in 3 dimensional data. For example i have two arrays:

before:

x y z
1 2 3
4 5 6
7 8 9

after:

x y z
2 2 3
5 5 6
8 8 9

I would like for the plot to be 3D scatter data like the folowing:

I know about quiver3 which plots norms but i am not sure how to do it from just 2 lists of X, Y, Z points.

The actual data will be much more complex.

Thanks for your help.

Answer 1

Arrow.m is available from the Matlab File Exchange that makes drawing arrows really easy:

>> A = [1 2 3; 4 5 6; 7 8 9];
>> B = [2 2 3; 5 5 6; 8 8 9];

>> hold on
>> scatter3(A(:,1), A(:,2), A(:,3))
>> scatter3(B(:,1), B(:,2), B(:,3))
>> arrow(A, B)

Otherwise, take a look at other answers to this question.