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MATLAB > API > Delaunay | Voronoi 試してみた

Last updated at Posted at 2017-11-18
動作環境
GeForce GTX 1070 (8GB)
ASRock Z170M Pro4S [Intel Z170chipset]
Ubuntu 16.04 LTS desktop amd64
TensorFlow v1.2.1
cuDNN v5.1 for Linux
CUDA v8.0
Python 3.5.2
IPython 6.0.0 -- An enhanced Interactive Python.
gcc (Ubuntu 5.4.0-6ubuntu1~16.04.4) 5.4.0 20160609
GNU bash, version 4.3.48(1)-release (x86_64-pc-linux-gnu)
scipy v0.19.1
geopandas v0.3.0
MATLAB R2017b (Home Edition)

Delaunay

Delaunay()を試してみる。

>> load seamount
>> tri = delaunay(x,y);
>> trisurf(tri,x,y,z);

qiita.png

これはドキュメント通り。

Voronoi

Delaunayのdual graphであるVoronoi diagramを取得できるか。

>> load seamount
>> tri = delaunay(x,y);
>> vrn = voronoi(x,y,z,tri);
エラー: triangulation
入力の三角形分割が無効です。データは、numtriangles  3 列または numtetrahedra  4 列の形式でなければなりませ
ん。

エラー: voronoi (line 119)
tr = triangulation(tri,x,y);

三次元を扱えないのだろうか。

二次元で試してみる。

>> load seamount
>> tri = delaunay(x,y);
>> vrn = voronoi(x,y,tri);

voronoi()を実行するとFigureが表示された。

qiita.png

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