To make the procedure even simpler, you do not have to create and populate
the 2 columns. With your copy of the region table open, write and run from
the MapBasic window
update your_table_name set obj= createpoint(centroidx(obj),centroidy(obj))
If you are not positively sure that there are only regions in your table,
start by selecting those
select * from your_table_name where str$(objectinfo(obj,1)="7" into sel
then
update sel set obj= createpoint(centroidx(obj),centroidy(obj))
Jacques PARIS
e-mail [EMAIL PROTECTED]
For MapInfo support, see the Paris PC Consult enr. site at
http://www.total.net/~rparis/gisproducts.htm
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On
Behalf Of Michel Larue
Sent: September 15, 2000 12:42 AM
To: [EMAIL PROTECTED]
Subject: Re: MI Creating points
Dear Gilbert,
It is because MapInfo can have only one object attached to one record, and
the object is already there, it is your polyon. In fact mixing polygons and
points is not either a good idea, and is even forbidden in Arcview. So I
suggest that you save a copy of your polygon table with another name, open
this table, update your columns with centroidX and centroidY, remove the
polygons and create points.
Have Fun
Michel Larue
At 11:51 14/09/00 -0400, you wrote:
>Could someone help me with the Create points command from the Table menu?
>
>I have a polygon table which is editable, I created 2 new columns in the
>associated browser that I filled with the X and Y coordinates of the
>polygon's centroid. Then I'm using the Create points command to get that
>central point feature for each polygon. I get no error message, but no
>points either. Why this?
>
>_________________________________________
>
>Yves Gilbert
>Agent de recherche/Research Officer
>
>
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