Examples of colon use
1 : 10 (yields 1 2 3 4 5 6 7 8 9 10)
1 : 2 : 10 (yields 1 3 5 7 9)
1 : 0.5 : 10 (yields 1 1.5 2 2.5 . . . 9 9.5 10)
10 : �1 : 1 (yields 10 9 8 7 . . . 1)
A sequence of values is an array value.
b = [1 : 6] / 3 (yields b = 0.3333 0.6667 1.0000 1.3333 1.6667 2.0000
A sequence of integers can also be used to select a segment of an array.
Remember: arrays in Matlab start at 1 (in Java at 0)