[R] 3D equal-spaced closed mesh

[Michael Sumner]

Rvcg another option to explore with its ball-pivoting surface
reconstruction.

Mike

On Fri, May 5, 2017, 08:34 Bert Gunter <bgunter.4567 at gmail.com> wrote:

> The r-sig-geo list and corresponding cran task view *might* be a better
> place to post and/look.
>
> Bert
>
>
> On May 4, 2017 12:51 PM, "Eric Krantz" <Eric.Krantz at respec.com> wrote:
>
> > I have sonar image which is basically a point cloud (x, y, z) of an
> > irregular underground cone-shaped structure. I am trying to create either
> > (1) a closed 3D mesh with "equally spaced" mesh grid, or (2) a smooth
> > closed surface, for instance by calculating connected localized
> regression
> > surfaces. My Z (vertical) component is equally spaced, but X and Y
> consist
> > of 128 points around the perimeter, regardless of diameter, which makes
> the
> > grid size small where the diameter is small, and large where it is large.
> > I'm looking for relatively equal grids, so I could use regression or
> > interpolation to add points where needed, or conversely remove them,
> hence
> > the idea of a localized surface regression. I've tried plot3D package,
> RGL,
> > and a couple other packages including alphashape3d. I have not tried
> plotly
> > or rms. So much time invested I thought I would ask for advice, if anyone
> > knows a package or technique or can clue which direction to go. Thanks,
> > Confidentiality Notice: This E-mail and any attachments ...{{dropped:12}}
> >
> > ______________________________________________
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> > posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
> >
>
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>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
-- 
Dr. Michael Sumner
Software and Database Engineer
Australian Antarctic Division
203 Channel Highway
Kingston Tasmania 7050 Australia

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