Hi Sidney
It's pretty simple actually - just a few steps.
1) Make a copy of your original table - use File | Save Copy As
2) Close the original and open the copy
3) Use the Table | Maintenance | Table Structure command to add two columns
to your new table - call them X and Y and set the type to Decimal 16, 8
4) Use the Table | Update Column command to get the centroid information
into the new columns - you'l do this twice, once for X and once for Y. Pick
your table, select the X or Y column and then, for the Value field, type
either CentroidX(obj) or CentroidY(obj).
5) Save your table
6) Select Table | Maintenance | Table Structure and select your table.
Uncheck the "Table Is Mappable" option and click "Ok". You have just removed
the map objects from your table.
7) Select Table | Create Points, select your table, make sure the X and Y
columns are set correctly, and click Ok. You now have a map of points
representing the centroids of the polygons you started with.
Regards,
James
James L Marlow
Director, Geographic Information Systems
Channel Marketing Corporation
15032 Beltway Drive
Addison, Texas 75001
Telephone 1 (972) 858-9600 extension 331
Facsimile 1 (972) 858-9601
email: [EMAIL PROTECTED]
www: http://cmcus.com
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, April 27, 2000 2:48 PM
> To: [EMAIL PROTECTED]
> Subject: MI creating points from centroids
>
>
> Hello users,
>
> I have a polygon coverage of Census Enumeration Areas for a
> particular urban
> region, from which I would like to create a point theme
> consisting solely of
> points located at the centroids of each Enumeration Area.
> Has anyone done
> something like this before, and if so, how do you go about
> doing it? Any
> help would really be appreciated.
>
> Regards,
> -Sidney
>
> - -
>
> Sidney McLean
> Income Security and Social Development Studies
> Applied Research Branch
> Human Resource Development Canada
> 165 Hotel de Ville
> Phase II, 7th Floor
> Hull, Quebec
> K1A 0J2
> ----------------------------------------------------------------------
> To unsubscribe from this list, send e-mail to
> [EMAIL PROTECTED] and put
> "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
>
----------------------------------------------------------------------
To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put
"unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
