MATLAB: Split vector A into smaller vectors based on vector B

Question

I have two vectors of same lenght. Vector A contains angle data, and vector B contains gait phase (1=stand; 2=swing).

I want to split vector A into smallers vector for each individual gait cycle (1 stand + 1 swing).

My data is as follows:

Vector A Vector B

1.2 1

1.3 1

1.4 1

1.5 2

1.6 2

1.7 2

1.8 2

1.9 2

1.10 2

2.11 1

2.12 1

2.13 1

2.14 1

2.15 2

2.16 2

2.17 2

2.18 2

Then I want to split A into…

Vector C Vector D

1.2 2.11

1.3 2.12

1.4 2.13

1.5 2.14

1.6 2.15

1.7 2.16

1.8 2.17

1.9 2.18

1.10

Thank you!

Answer 1

A = [1.2                1
1.3                1
1.4                1
1.5                2
1.6                2
1.7                2
1.8                2
1.9                2
1.10              2
2.11              1
2.12              1
2.13              1
2.14              1
2.15              2
2.16              2
2.17              2
2.18              2    ]
A1 = A(A(:,2)==1,1)
A2 = A(A(:,2)==2,1)