On Thu, 21 Nov 1996, Malcolm Williamson wrote:
>
To me, "spatial analysis" implies analysis of a point or points using a
technique that considers spatial placement of data.
Just wondering... why neccesarily only point data? What about continuously
varying data, along a line for eg? If you want to look at the variation
in such data along a particular direction then by your definition does that
come under spatial analysis?
Harini Nagendra
Centre for Ecological Sciences
Indian Institute of Science
Bangalore - 560012
India
On Fri, 22 Nov 1996, Harini Nagendra wrote:
On Thu, 21 Nov 1996, Malcolm Williamson wrote:
> >
> To me, "spatial analysis" implies analysis of a point or points using a
> technique that considers spatial placement of data.
Just wondering... why neccesarily only point data? What about continuously
varying data, along a line for eg? If you want to look at the variation
in such data along a particular direction then by your definition does that
come under spatial analysis?
Harini Nagendra
Centre for Ecological Sciences
Indian Institute of Science
Bangalore - 560012
India
Your "point" is taken. 
My definition was not meant to be anything
absolute; I was merely trying to help someone out. I would also argue
that any _analysis_ done in GRASS, anyway, is inherently calculated based
on points in space, regardless of whether the _data_ represents lines or
surfaces. Lines are composed of vertices, and surfaces are dynamically
resampled to a regular grid of x-y points in GRASS. Anyway, a theoretical
discussion of spatial analysis would be better suited to the GIS-L list.
Regards,
-Malcolm Williamson