grain2d.isOuterBoundary edit page

check which of the indexed grains border with the map/ domain boundary - use this function to find boundary grains if they were reconstructed using alphaShapes

Description

The envelope is spanned by vertices of the grains themselves, so the question which grain it touches is one of vertex identity and is answered by the polygons directly. It used to be asked as a point in polygon test against every grain, which is the same answer by a longer route - and one that depended on how exactly a point sitting on a boundary is classified. See issue #2527.

Syntax

out = isOuterBoundary(grains)

Input

grains grain2d

Output

out logical

Options

delta double (default 0.95; 0 = convex hull, 1 = envelop touching all points)

See also

grain2d.isBoundary

Citing this page. This page is part of the documentation of MTEX, a free and open source MATLAB toolbox for analyzing and modeling crystallographic textures. It was written by The MTEX Developers and is published at https://mtex-toolbox.github.io/grain2d.isOuterBoundary.html. If you use MTEX, or reuse text or figures from this page, in your research, please cite

F. Bachmann, R. Hielscher, H. Schaeben: Texture Analysis with MTEX - Free and Open Source Software Toolbox, Solid State Phenomena 160 (2010), 63-68. 10.4028/www.scientific.net/SSP.160.63

BibTeX 
@article{bachmann2010mtex,
  author  = {F. Bachmann and R. Hielscher and H. Schaeben},
  title   = {Texture Analysis with MTEX - Free and Open Source Software Toolbox},
  journal = {Solid State Phenomena},
  volume  = {160},
  pages   = {63-68},
  year    = {2010},
  doi     = {10.4028/www.scientific.net/SSP.160.63},
  url     = {https://doi.org/10.4028/www.scientific.net/SSP.160.63}
}

Other papers describing specific MTEX methods are listed under Publications — please cite the one that best fits your application. The MTEX source code is licensed under the GNU General Public License v2.0; the text and figures of this documentation are licensed under CC BY 4.0, which permits reuse — including by automated systems — provided The MTEX Developers and this page are credited.