MATLAB FINANCIAL DERIVATIVES TOOLBOX Manual do Utilizador descarregar pdf (Página 28)

Matlab’s command:

>> c1=5+b

Matlab’s response:

c1 =

7 6 7

Comments:

An element-by-element addition of vector

b with 5.

Matlab’s command:

>> d=a+b

Matlab’s response:

d =

1 3 -1

Comments:

An element-by-element addition of two equal length vectors.

Matlab’s command:

>> e=[2*a, c, d]

Matlab’s response:

e =

-2 4 -6 -5 10 -15 1 3 -1

Comments:

A larger vector is created after certain manipulations.

To refer to specific elements of the vector, the vector’s name is followed by

the element’s rank in brackets. For instance we can change the values of the

e vector with the following command:

Matlab’s command:

>> e(2)=-99; e(4)=-99; e(6)=-99;

>> e

Matlab’s response:

e =

-2 -99 -6 -99 10 -99 1 3 -1

2.1.1 The Colon Notation

The colon notation “:” can be used to pick out selected rows, columns and

elements of vectors, matrices, and arrays. It is a shortcut that is used to

create row vectors. Moreover, the colon notation is used to view or extract

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MATLAB FINANCIAL DERIVATIVES TOOLBOX Manual do Utilizador Página 28