# delaunay

##### 是否可以在 scipy.spatial 的 Delaunay 中强制执行边缘（受约束的 delaunay 三角剖分）？(Is it possible to enforce edges (constrained delaunay triangulation) in scipy.spatial's Delaunay?)

2021-09-21 02:43:27    分类:技术分享    python   scipy   triangulation   delaunay

##### Delaunay Triangle 构造中没有删除重复的边(Duplicate edges not being removed in Delaunay Triangle construction)

2021-09-20 02:35:18    分类:技术分享    javascript   delaunay

##### 用单独的颜色填充 Matplotlib 三重图中的三角形(Filling triangles in Matplotlib triplot with individual colors)

2021-09-18 10:03:34    分类:技术分享    python   matplotlib   delaunay

##### 使用 3D Delaunay 三角剖分作为基础表示 LiDAR 表面？(Representing a LiDAR surface using the 3D Delaunay Triangulation as basis?)

2021-09-17 10:31:57    分类:技术分享    3d   cgal   delaunay   lidar

##### 使用 Delaunay 三角剖分进行插值(Interpolation with Delaunay Triangulation)

2021-09-16 19:17:09    分类:技术分享    python   scipy   delaunay

##### CGAL：二维约束 Delaunay 三角剖分 - 向约束添加信息(CGAL: 2D Constrained Delaunay Triangulation - Adding information to constraints)

2021-09-13 06:53:55    分类:技术分享    constraints   triangulation   cgal   delaunay

##### 如何绘制等边彩色三角形？(How to plot an equilateral color triangle?)

2021-09-12 10:06:00    分类:技术分享    matlab   plot   matlab-figure   triangulation   delaunay

##### Determine normal vectors of unknown 3D surface using scattered points

I have a set of (topologically simple) x,y,z points. Associated with each one of them is a scalar (s). I would like to visualize the results. How could I have the (unit) normal of each node determined and then scaled in accordance of s, or is there a way to get a spatially distributed surface plot (plotted parallel to the data points plane)? This is a sample of 3D points:

2021-09-08 06:56:32    分类:问答    matlab   3d   data-visualization   curve-fitting   delaunay

##### How to plot an equilateral color triangle?

I would like to make a color plot in MATLAB similar to this plot: I have managed to create all the points [x,y] needed in order to create the vertexes and I have a map with colors of each vertex, so I can get the following. But I do not get it how to make the axis work. Code so far: % Equilateral grid tcorner = [0.0, 0.5, 1.0; 0.0, 1.0*sqrt(3)/2, 0.0]; tg = triangle_grid( 1/0.05, tcorner ); tgx = tg(1,:); tgy = tg(2,:); % Create triangles tri = delaunay(tgx,tgy); % Plot h = trisurf(tri, tgx, tgy, colorvector); And the grid function: function triangle_grid(n, tcorner) ng = ( ( n + 1 ) * ( n + 2

2021-09-06 15:14:58    分类:问答    matlab   plot   matlab-figure   triangulation   delaunay

##### Getting a proper Delaunay triangulation of an annulus (using python)

I am trying to triangulate an annulus using the scipy.spatial.Delaunay() function, but cannot get the desired result. Here is my code: from scipy.spatial import Delaunay NTheta = 26 NR = 8 a0 = 1.0 #define base rectangle (r,theta) = (u,v) u=np.linspace(0, 2*np.pi, NTheta) v=np.linspace(1*a0, 3*a0, NR) u,v=np.meshgrid(u,v) u=u.flatten() v=v.flatten() #evaluate the parameterization at the flattened u and v x=v*np.cos(u) y=v*np.sin(u) #define 2D points, as input data for the Delaunay triangulation of U points2D=np.vstack([u,v]).T xy0 = np.vstack([x,y]).T Tri1 = Delaunay(points2D) #triangulate the

2021-09-03 11:40:24    分类:问答    python   numpy   scipy   triangulation   delaunay