[Scilab-users] Needs help with surface plot & colormap

[Dang, Christophe]

Hello, 

-----Message d'origine-----
De la part de surender_kumar
Envoyé : mardi 2 juillet 2013 18:23

> [...]
> subplot(121)
> x=linspace(0,%pi,100);
> plot(sin(x));

OK.

Can I suggest you to merge the data?

For a 2d drawing, it is quite easy.

Considering row vectors:

// **********

x = [x1, x2];

y = [y1, y2];

plot(x, y)

// **********

It is more difficult for 3d drawing, depending on the structure of the 
data.

If x1, y1 and z1 are m1*n1 matrices,
x2, y2, z2 are m2*n2 matrices

then if n2 = n1, you can just do

x = [x1 x2] ; y = [y1 y2] ; z = [z1 ; z2]

if n1 and n2 are different, you might have to complete the smallest 
matrices with %nan.

e.g.

// **********

x1 = [1 2 3 ; 1 2 3] ; y1 = [1 1 1 ; 2 2 2]

z1 = rand(x1);

x2 = [4 5 6 ; 7 8 9] ; y2 = y1 ;

z2=rand(x2) ;

x = [x1 x2] ; y = [y1 y2] ; z = [z1 z2] ;

plot3d2(x, y, z)

// **********

Hope this helps

-- 
Christophe Dang Ngoc Chan
Mechanical calculation engineer

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