Scilab Function
Last update : 18/05/2014

contour2di - compute level curves of a surface on a 2D plot

Calling Sequence

[xc,yc]=contour2di(x,y,z,nz)

Parameters

Description

contour2di computes level curves of a surface z=f(x,y) on a 2D plot. The values of f(x,y) are given by the matrix z at the grid points defined by x and y.

xc(1) contains the level associated with first contour path, yc(1) contains the number N1 of points defining this contour path and (xc(1+(1:N1)), yc(1+(1:N1)) ) contain the coordinates of the paths points. The second path begin at xc(2+N1) and yc(2+N1) and so on.

Examples


[xc,yc]=contour2di(1:10,1:10,rand(10,10),5);
k=1;n=yc(k);c=1;
while k+yc(k)<size(xc,'*')
  n=yc(k);
  plot2d(xc(k+(1:n)),yc(k+(1:n)),c)
  c=c+1;
  k=k+n+1;
end

 
  

See Also

contour,  fcontour,  fcontour2d,  contour2d,  plot2d,  xset,  

Author

J.Ph.C.