genfac3d - compute facets of a 3D surface

Calling Sequence

[xx,yy,zz]=genfac3d(x,y,z,[mask])

Parameters

• xx,yy,zz : matrices of size (4,n-1xm-1). xx(:,i) , yy(:,i) and zz(:,i) are respectively the x-axis, y-axis and z-axis coordinates of the 4 points of the ith four sided facet.
• x : x-axis coordinates vector of size m.
• y : y-axis coordinates vector of size n.
• z : matrix of size (m,n). z(i,j) is the value of the surface at the point (x(i),y(j)).
• mask : boolean optional matrix with same size as z used to select the entries of z to be represented by facets.

Description

genfac3d computes a four sided facets representation of a 3D surface z=f(x,y) defined by x , y and z .

Examples

t=[0:0.3:2*%pi]'; z=sin(t)*cos(t');
[xx,yy,zz]=genfac3d(t,t,z);
plot3d(xx,yy,zz)
 
  

See Also

eval3dp ,   plot3d ,