CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

If you need to store the z coordinates, you can use the 
projection_traits, which turn a 3D point into a 2D one [1,2].

Note that the z coordinate does not need to be stored in the point, it
is just a matter of how you display or use your result then. For example
in this example [3], it is stored in a map.

Sebastien.

[1] 
http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Triangulation_2/Chapter_main.html#Subsection_37.5.2

[2] 
http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Kernel_23_ref/Class_Projection_traits_xy_3.html

[3] 
http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Interpolation/Chapter_main.html#Subsection_70.3.3

On 04/16/2013 07:15 AM, Rhys D wrote:
> In your Google tech talk you showed an example of a Japanese weather map
> where they interpolated randomly sampled (in 2D) temperatures onto a
> random grid.
>
> Is there a sample that shows how I would do this?
>
> I'm not quite following the sample in the docs.
> I see where you set the X Y coords of the input and query points. I
> don't see where you set the "z" values of each point.
>
> regards,
>
> Rhys.