Re: MI 3d regions

[Philip Wyatt]

Title: 3d regions

Paul:

 

Yes, simply use the region-to-grid utility and it will make a "pillared" grid surface representing the polygons (3D choropleth map).  The polygons must have at least one numeric attribute.  It is also possible to do this using only a point file, by considering the natural neighbourhood area around each point.  There are 2 ways do this, 1) create a voronoi (natural neighbour) diagram and then run region-to-grid on the resulting polygons or, 2) use Inverse Distance Weighting interpolation with the maximum and minimum # of points set to 1.

 

Regards,

 

Phil

Philip H. Wyatt
V.P. Technology
Northwood Geoscience Ltd.
43 Auriga Dr., Nepean, Ontario, Canada, K2E 7Y8
Phone 1.613.224.2020 ext 340, FAX 1.613.224.2785
Internet: www.northwoodgeo.com

----- Original Message -----

From: Brown Paul

To: 'Mapinfo List'

Sent: Monday, April 12, 1999 10:15 AM

Subject: MI 3d regions

List,

Is it possible to use vertical mapper to create a 3d effect with whole regions?

E.G. Depending on the heart disease rate a region will appear higher or lower that surrounding regions. For want of a better description: Pillar effect, rather than using modelling of the point data.

Any suggestions appreciated.

Thanks

Paul.

Paul Brown
GIS Development Officer
Avon Health Authority

Tel:  0117 9002490
Fax: 0117 9766601
e-mail: [EMAIL PROTECTED]