Hey there,
I have the solution, the problem is with the line direction of the
polylines. When you digitize polylines in MapInfo you can digitize
clockwise or counter clockwise. Let's say that a polyline digitized
clockwise states that everything that is on the right is water and
everything on the left is land, and that for lines digitized counter
clockwise, that everything the right is land and everything on the left
is water. The clockwise and counter clockwise line direction have
opposite associations of what defines the closed polyline, or if
converted to a region, the closed region. You may ask what does the
polyline direction have to do with the region or polygon, well... The
line direction defines what is to be classified as the regions filled
area, either: everything outside of what you really want to be the
polygon say a lake or the ocean, or everything inside the polygon...
All you need to do is use the change line direction MapBasic utility.
It is available via the MapInfo-L shareware page, and is available as an
integrated feature in applications such as Discover by Encom
Technologies (http://www.encom.com.au/)
Stan Johnston
Geologist
Josee Bouchard / Le Groupe KOREM wrote:
>
> Mr. Dickson,
>
> You asked:
> I have the coastline and regional boundaries of Scotland as Polyline
> data. I want to convert them into regions, so I have regions for the
> regions! Everytime I select all, and convert the data, it does its
> usual, and goes mental, putting the boundaries into the sea! I have done
> this conversion before for England, even though it took several
> attempts, but I cannot figure out how to do it anymore.
>
> Answer:
> I suggest you to try MapLogix, the topological map editing utility for
> MapInfo. MapLogix lets you use your polylines in order to build region,
> without destroying original lines like the "convert to region" command.
> Maybe that this tool will not solve your problem of "boundaries into the
> sea", which seems to be a problem of projection. Be sure that your table
> is projected instead of in long/lat.
>
> You can download the demo version of MapLogix at
> http://www.korem.com/maplogix or on MapInfo-L FTP site.
>
> Hope this helps,
> Jos�e
> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
>
> || // Josee Bouchard
> || // [EMAIL PROTECTED]
> || // MapLogix Product Manager
> || \\
> || \\ Le Groupe KOREM inc.
> || \\ http://www.korem.com
>
> 680, Charest Est, Quebec (QC)
> CANADA G1K 3J4
> _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _
>
> ----------------------------------------------------------------------
> 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]
