MATLAB FINANCIAL DERIVATIVES TOOLBOX Uživatelský manuál stáhnout pdf (Strana 62)

Matlab’s command:

>> clear; x=-2:1:2; y=-4:1:4; [X,Y]=meshgrid(x,y)

>> plot(X,Y, 'rh'); axis([-3 3 -5 5]); xlabel('x-axis'); ylabel('y-axis');

>> title('Meshgrid');

Matlab’s response:

X =

-2 -1 0 1 2

Y =

-4 -4 -4 -4 -4

-3 -3 -3 -3 -3

-2 -2 -2 -2 -2

-1 -1 -1 -1 -1

0 0 0 0 0

1 1 1 1 1

2 2 2 2 2

3 3 3 3 3

4 4 4 4 4

-3 -2 -1 0 1 2 3

-5

-4

-3

-2

-1

x-axis

y-axis

Meshgrid

Comments:

Creating the grid neces

sary for plotting a 3D surface.

takes as inputs the vectors

x and

y that define the (x,y)-plane that

should be used to evaluate

Z and returns two matrices (

X and

that if taken together, generate various (x,y) pairs that lay in the

rectangular d

omain. The subsequent 2D plot of

and

shows

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MATLAB FINANCIAL DERIVATIVES TOOLBOX Uživatelský manuál Strana 62