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Converting 2D vectors to 3D
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cappers  
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  More options Jul 18, 10:25 am
From: cappers <dave.capst...@ordnancesurvey.co.uk>
Date: Fri, 18 Jul 2008 07:25:57 -0700 (PDT)
Local: Fri, Jul 18 2008 10:25 am
Subject: Converting 2D vectors to 3D
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Hi All,
i was wondering if there was any way of taking a 2D polygon dataset
and converting this to a 3D one, based on heights obtained from an
underlying grid or TIN?  There is something similar to what i want to
do in ESRI ArcGIS, this is the Interpolate shape tool.  However, as
well as adding the z attribute to the geometry at the already existing
vertices it densifies the feature based on the grid cell size, not
quite what i'm after.  Any ideas?

Thanks

Dave


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Hans van der Maarel  
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  More options Jul 18, 10:48 am
From: Hans van der Maarel <h...@redgeographics.com>
Date: Fri, 18 Jul 2008 16:48:57 +0200
Local: Fri, Jul 18 2008 10:48 am
Subject: Re: [fme] Converting 2D vectors to 3D
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Hi Dave,

> i was wondering if there was any way of taking a 2D polygon dataset
> and converting this to a 3D one, based on heights obtained from an
> underlying grid or TIN?  There is something similar to what i want to
> do in ESRI ArcGIS, this is the Interpolate shape tool.  However, as
> well as adding the z attribute to the geometry at the already existing
> vertices it densifies the feature based on the grid cell size, not
> quite what i'm after.  Any ideas?

The SurfaceDraper or SurfaceModeller will do the actual draping, but I
think they will densify the feature to make it conform the terrain model.
--
Hans van der Maarel
Red Geographics

Zevenbergsepoort 44b            www.redgeographics.com
4791 AE  Klundert               h...@redgeographics.com
The Netherlands                 phone: +31-168-401035
                                skype: redgeographics


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