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顶点工具箱

发布时间:2021-02-07 03:18:43

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『贰』 matlab中生成voronoi图时,能否设定一个边界使得voronoi顶点不出现无穷远点

下个mpt工具箱
里面的mpt_voronoi可以实现你的要求

MPT_VORONOI Computes the voronoi diagram via mpLP

[Pn]=mpt_voronoi(points,Options)

---------------------------------------------------------------------------
DESCRIPTION
---------------------------------------------------------------------------
The voronoi diagram is a partition of the state space; For a given set of
points pj, each region Pn(j) is defined as
Pn(j)={x \in R^n | d(x,pj)<=d(x,pi), \forall i \neq j}

---------------------------------------------------------------------------
INPUT
---------------------------------------------------------------------------
points - Optional input:
Matrix p times nx of points: nx is state space dimension and
p is the number of points
The entry is graphical in 2D if no parameters are passed.
Options.pbound - A "bounding polytope". If provided, the voronoi cells will
be bounded by this polytope. If not provided, the cells will
be bounded by a hypercube as big as 1.5x the maximum
coordinate of any of the seed points
Options.plot - If set to 1, plots the voronoi diagram (0 is default)
Options.sortcells - If set to 1, resulting Voronoi partition will be ordered
in a way such that Pn(i) corresponds to seed point i.
(Default is 1)

『叁』 用matlab mpt工具箱生成受限的voronoi图。请问该怎么得到各个顶点坐标呢(包括voronoi边与边界的交点)

extreme这个函数就可以得到顶点坐标。
给你个代码:
function irPoly = getIrreg(m,s)
%GETIRREGULAR Summary of this function goes here
% get irregular pixels
% the same begin & end
% clockwise order
% m - regular size
% S - low/high resolution

% get limit voronoi
x = gallery('uniformdata', [(m*s)^2 1], 0);
y = gallery('uniformdata', [(m*s)^2 1], 1);
vOut = [0,0; 0,m; m,m; m,0];
P = polytope(vOut);
Options.pbound = P;
% Options.plot = 1;
Pn = mpt_voronoi(m*[x,y],Options);

% split each polygon
for iPoly = 1:length(Pn)
thisPoly = extreme(Pn(iPoly));
% limited in [0,m]
thisPoly(thisPoly>m) = m;
thisPoly(thisPoly<0) = 0;
% make points in order
k = convhull(thisPoly(:,1), thisPoly(:,2));
% make clockwise
[pX,pY] = poly2cw(thisPoly(k,1),thisPoly(k,2));
irPoly{iPoly} = [pX,pY];
end%for iPoly

end%function

『肆』 Matlab的MPT工具箱

^extreme这个函数就可以得到顶点坐标。 给你个代码: function irPoly = getIrreg(m,s) %GETIRREGULAR Summary of this function goes here % get irregular pixels % the same begin & end % clockwise order % m - regular size % S - low/high resolution % get limit voronoi x = gallery('uniformdata', [(m*s)^2 1], 0); y = gallery('uniformdata', [(m*s)^2 1], 1); vOut = [0,0; 0,m; m,m; m,0]; P = polytope(vOut); Options.pbound = P; % Options.plot = 1; Pn = mpt_voronoi(m*[x,y],Options); % split each polygon for iPoly = 1:length(Pn) thisPoly = extreme(Pn(iPoly)); % limited in [0,m] thisPoly(thisPoly>m) = m; thisPoly(thisPoly<0) = 0; % make points in order k = convhull(thisPoly(:,1), thisPoly(:,2)); % make clockwise [pX,pY] = poly2cw(thisPoly(k,1),thisPoly(k,2)); irPoly{iPoly} = [pX,pY]; end%for iPoly end%function

『伍』 cad中怎么快速把规则的矩形 多线段画着太慢了 或者谁知道贱人工具箱里有什么类似的功能没有

方法:把矩形创建为面域,再求差,如图所示,参考一下。

『陆』 CAD2014,如何批量提取多段线长度及每条多段线两顶点的坐标

CAD自带功能,想提取很多pl线的顶点坐标,那就放弃吧,换LISP思路吧

『柒』 电脑存放系统文件占用的空间越来越大了,怎么办

用360深度优化一下吧。系统文件越来越大无非就是软件越安越多,注册表越来越繁杂。
还有可能病毒伪装系统文件,建议360指定C盘杀毒一次。

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