Matlab: Submatrix/Subvector

A. The example below shows how to:

1. Define a vector with incrementing integers.
2. Define a second vector (subvector) which is formed from partial elements of the first vector.

>> a = 1:10

a =

     1     2     3     4     5     6     7     8     9    10

>> b = a(5:7)

b =

     5     6     7

B. The example below shows how to get a submatrix from an existing matrix:

c =

     1     2     3
     4     5     6
     7     8     9

>> d = c(2:3,2:3)

d =

     5     6
     8     9

C. Divide all elements of a vector by an integer:

>> e = a/2

e =

    0.5000    1.0000    1.5000    2.0000    2.5000    3.0000    3.5000    4.0000    4.5000    5.0000