[GRASS-dev] more NVIZ updates

[Michael Barton]

On 12/5/06 7:01 PM, "Helena Mitasova" <hmitaso at unity.ncsu.edu> wrote:

> 
> there is a difference - 3D rasters represent trivariate functions
> so at each point in 3D space you can have a different value - I think
> calling this a volume is quite intuitive
> 
> watertower, dinosaur - 3D vector surfaces are quite different - if
> you try to represent
> it by a volume you would have it filled with just 1 and no-data.
> So I don't think that 3D surfaces or 3D vectors should be called
> volumes - you essentially have 3D points, lines and areas.

Good points. Wish I could say I thought of this so clearly.

Volumes *are* different from 3D surface features. Thanks for pointing this
out.

Michael
__________________________________________
Michael Barton, Professor of Anthropology
School of Human Evolution & Social Change
Center for Social Dynamics and Complexity
Arizona State University

phone: 480-965-6213
fax: 480-965-7671
www: http://www.public.asu.edu/~cmbarton