MATLAB FINANCIAL DERIVATIVES TOOLBOX Manual de usuario descargar pdf (Pagina 29)

parts of vectors (afterwards, with matrices, the colon can be used to view a

certain part of a matrix). For instance, the following commands produce

three different row vectors:

Matlab’s command:

>> v1=1:8, v2=-4:2:2, v3=[0.1:0.2:0.6]

Matlab’s response:

v1 =

1 2 3 4 5 6 7 8

v2 =

-4 -2 0 2

v3 =

0.1 0.3 0.5

The careful viewer should have notice that the vector creation via the use of

the colon notation has the form: starting_value:step:finishing_value. The

starting_value consists the first value/element of the vector, the

finishing_value is the last value/element of the vector and all other elements

differ by a value equal to step. Also, when the interval between

finishing_value and starting_value is not divisible by the step, the last value

of the vector is not the finishing_value (i.e. in

3 the last element is 0.5 and

not 0.6). The colon notation is also used to view or extract parts of a vector.

See the examples to get an idea.

Matlab’s command:

>> v4=v1(2:4)

Matlab’s response:

V4 =

2 3 4

Comments:

Extracting the 2

, 3

and 4

elements of

Matlab’s command:

>> v1(2:3:8)

Matlab’s response:

ans =

2 5 8

Comments:

Extracting the 2

, 5

and 8

elements of

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 118 119

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MATLAB FINANCIAL DERIVATIVES TOOLBOX Manual de usuario Pagina 29