MapInfo does not understand topology. You must create each region
one at a time. You also have to ensure that each region is a
fully-closed polygon (watch out for little tiny gaps!), and that
no node is a junction point for more than 2 polylines, and that
no node terminates only one polyline. You can create regions with
more than one polygon, as long as they don't have a common border
(otherwise you get junk!)
- Bill Thoen
"Elliot Tinton EG CEFAS (DN=EJT00, RECIPIENTS, LOWESTOFT, CEFAS)"
wrote:
>
> Hello All,
>
> I am trying to create a regions map of Europe without much success. I started off
>with lat lon coordinates of points which define coastline and country boundaries.
>With MapBasic I have joined up all the relevant points with single lines. At this
>stage the map looks fine and appears as it should. I then selected everything and
>used 'combine' to create a single polyline. This also seems to work ok. However,
>when I then choose 'convert to regions' it doesn't manage to convert properly. It
>can't seem to manage to cope with points where three lines meet, i.e. where country
>boundaries meet the coast or each other. At these points it puts in straight
>diagonal lines to other similar points which cut accross the region. I can get
>around this by removing the country boundaries so that I am just filling the area
>inside the coastline but I would like to keep the country boundaries if possible.
>Can anyone tell me what I am doing wrong or another way to achieve this ? I could c!
!
!
re!
> !
> !
> ate a MIF file of regions direct
> ly but it would take me ages to find out the start and end co-ordinates of each
>country boundary since I have 84000 points in total.
>
> Thanks in advance
>
> Elliot.
----------------------------------------------------------------------
To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put
"unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
