Or the other one is a digitising trick but as effective (sometimes)
switch the node snapping on - (hit s), select the polygon tool then move the
cursor over the first point you want to digitise from, get the snapping
cross hairs to appear and click to create a new node. then move to the last
point on the existing polygon you want to digitise to and again move the
cursor over the point so that the snapping 'cross haris' appear - then hold
down shift whilst clicking. the boundary of the new oject will automatically
'snap' along the entire lenght of the new object between the 'start' and
'end' nodes.
i find it better to do this is in a couple of stages than all at once.
Jonathan
-----Original Message-----
From: Martin Roundill [mailto:[EMAIL PROTECTED]]
Sent: 07 April 2000 06:35
To: '[EMAIL PROTECTED]'; [EMAIL PROTECTED]
Subject: RE: MI Copying Boundary Lines.
Hi Myles
I find the easiest way to do this is in fact not to digitise it. Instead
digitise a polygon that goes inside the original polygon, set the target to
the new polygon, select the existing polygon(s) and use these to erase the
overlap.
The result is that the new polygon exactly agrees with the existing
polygons.
(Either that or you get the dreaded "error overlaying objects" message which
indicates that the original data isn't as clean as you thought)
simply and stacks quicker than digitising all the little bits.
Cheers
Martin
==================================
Martin Roundill
GIS Manager
Waitakere City Council
Private Bag 93109
Henderson
Waitakere City
New Zealand
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Friday, 7 April 2000 11:56
To: [EMAIL PROTECTED]
Subject: MI Copying Boundary Lines.
I have a mapinfo table of which contains very detailed regions. When I say
detailed I mean the bounday lines are made up of hundreds of points over a
short
distance. What is the best way of copying a piece of this regions boundary
so
that when I digitise another region adjacent to it, they have identical
boundaries?
Any help would be much appreciated.
Thanks in advance
Myles
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