Mike
I'm a little inexperienced but I believe that Mapinfo creates a centroid
by using something called a minimum bounding rectangle(MBR). In this
scenario it is quite possible for Mapinfo to return a centroid position
outside of the polygon in question. I know of no way around this.
Regards
Craig Townsend
Guyra Shire Council
NSW AUSTRALIA
Steve Wallace wrote:
>
> Sounds like you have some spatial errors in this table. I've never seen a
> centroid outside an object. Even if you try and move a centroid outside an
> object by hand, MapInfo will give you an error.
>
> Use MapCheck (for older MapInfo versions), or Objects > Check Regions (in
> newer) to see if there are any problems with these regions.
>
> To re-cast all the centroids in a table, you can make the layer editable,
> select all regions, convert all to polylines, then convert all back to
> regions.
>
> Steve Wallace
>
> ----- Original Message -----
> From: "Mike Hankins" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Thursday, March 29, 2001 12:01 PM
> Subject: MI-L Centroids of objects
>
> > Hello,
> > I ran into a problem while updating a column. The wrong territory
> > value was being assigned to the object and I have figured it out that the
> > centroid is outside of the polygon. Is there a way to check a file to see
> > if the centroid of a object is outside of the polygon for that object? I
> > will have over 50 tables with as many as 3000 polygons in each table. Is
> > there a way to update the columns without using a centroid based solution?
> >
> > Thanks to All,
> >
> > Mike Hankins
> > COUNTRY Insurance and Finacial Services
> >
> >
> >
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