retistruct (version 0.5.9)

ReconstructedOutline: Reconstruct outline into spherical surface

Description

Reconstruct outline into spherical surface. Reconstruction proceeds in a number of stages:

Usage

ReconstructedOutline(o, n = 500, alpha = 8, x0 = 0.5, report = print,
  plot.3d = FALSE, dev.flat = NA, dev.polar = NA)

Arguments

o

AnnotatedOutline object, containing the following information:[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

n

Number of points in triangulation.

alpha

Area scaling coefficient

x0

Area cutoff coefficient

report

Function used to report progress.

plot.3d

Whether to show 3D picture during optimisation.

dev.flat

Device to plot grid onto. Value of NA (default) means no plotting.

dev.polar

Device display projection. Value of NA (default) means no plotting.

Value

• reconstructedOutline object containing the input information and the following modified and extra information:
• P
  New set of points in flattened object
• gf
  New set of forward pointers in flattened object
• gb
  New set of backward pointers in flattened object
• phi
  lattitude of new points on sphere
• lambda
  longitude of new points on sphere
• Tt
  New triangulation

Details

1. The flat object is triangulated with at leastntriangles. This can introduce new vertices in the rim.
2. The triangulated object is stitched.
3. The stitched object is triangulated again, but this time it is not permitted to add extra vertices to the rim.
4. The corresponding points determined by the stitching process are merged to form a new set of merged points and a new triangulation.
5. The merged points are projected roughly to a sphere.
6. The locations of the points on the sphere are moved so as to minimise the energy function.