[Manifold-l] merge points to areas

[Martin Roseveare]

Thanks Bob,

 

I ended up trying the contouring route in the end and yes I think it does
produce a nicer result and avoids having to select each group individually
which is good as I have rather a lot of them.

 

 

Martin Roseveare
Senior Geophysicist


Web: www.archaeophysica.co.uk
Phone: +44 (0) 1989 730 564
Fax: +44 (0) 7050 369 790

This e-mail and any attachment may contain proprietary or confidential
material and be subject to legal privilege. If you have received it in error
please promptly erase it from your system and inform the sender.
It should not be copied, disclosed to, retained or used in any way by any
other party.

Nothing in this e-mail should be regarded as representing a binding contract
unless explicitly stated otherwise. All opinions are those of the sender and
not necessarily ArchaeoPhysica Ltd.

  _____  

From: Bob Heitzman [mailto:rheitzman at gmail.com] 
Sent: 09 October 2007 20:53
To: m.roseveare at archaeophysica.co.uk
Cc: manifold-l at directionsmedia.net
Subject: Re: [Manifold-l] merge points to areas

 

I used Voronoi Areas for a similar task. I think I draw a rectangle around
the area of interest to restrain the areas.

Once you have the ares you can use Drawing, Disolve merge the common areas.

Another option is to turn the points into a Surface (copy point component,
paste as surface in Project pane) and use Contours to make the areas -
should make for a nicer final product. 

FYI the forum is the place to post these days - see your Help menu.

On 10/9/07, Martin Roseveare < <mailto:m.roseveare at archaeophysica.co.uk>
m.roseveare at archaeophysica.co.uk> wrote:

I have a drawing containing points on a common grid and in dense groups, 
like blobs of mould I suppose, for want of a better description.

I need to be able to coalesce these into areas, one per group. In principle
it's just a complex hull function, however, I want the complex hull of each 
group and not the whole drawing. If there were a small number of groups I
could select each by hand, but there are several hundred...

Any suggestions as to how to automate this?

Thanks,

Martin Roseveare 
Senior Geophysicist


Web: www.archaeophysica.co.uk
Phone: +44 (0) 1989 730 564
Fax: +44 (0) 7050 369 790

This e-mail and any attachment may contain proprietary or confidential 
material and be subject to legal privilege. If you have received it in error
please promptly erase it from your system and inform the sender.
It should not be copied, disclosed to, retained or used in any way by any 
other party.

Nothing in this e-mail should be regarded as representing a binding contract
unless explicitly stated otherwise. All opinions are those of the sender and
not necessarily ArchaeoPhysica Ltd.


_______________________________________________
Manifold-l mailing list
Manifold-l at lists.directionsmedia.net
http://www.directionsmedia.net/mailman/listinfo/manifold-l

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.directionsmedia.net/pipermail/manifold-l/attachments/20071010/3a2842a6/attachment.html