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+ E. C, G! ^4 [1 X) C- ?. ~& F带你解锁不一样的matlab新玩法
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万圣节??到了,今天介绍一下怎么用 MATLAB 整活,喜欢此推文的小伙伴们记得点赞+关注+分享!【尊重作者劳动成果,转载请注明推文链接和公众号名】
- {9 Z9 N9 A6 z8 \效果图
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代码绘制南瓜clc;clear;close all;[X,Y,Z]=sphere(200);R=1+(-(1-mod(0:.1:20,2)).^2)/15;surf(R.*X,R.*Y,(.8+(0-(1:-.01:-1)'.^4)*.2).*Z.*R,'FaceC',[ 1 0.4588 0.0941],'EdgeC','n')axis('equal','off')material([ .6, .9, .3, 2, .5 ])lighting gcamlight
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& T( g( l" B6 ?' L, I( q绘制无脸男小鬼 j2 ~2 Q8 o) ^; p
clc;clear;close allfig=figure('Position',[476 224 672 642]);ax=gca;ax.Color='none';ax.YLim=[0,15];ax.XLim=[-3,14];ax.Box='off';ax.XColor='none';ax.YColor='none';axis equal;hold onpause(0.1)[X, Y] = meshgrid(linspace(1, 0, 200));image([-3, 14], [0, 15], Y*255);colormap(gray)pause(0.1)ellipse = EllipsePlotter('a', 4, 'b', 6, 'x', 5.4, 'y', 6.2, ... 'plotType', 'fill', 'fillColor', [.4,.4,.4], 'rotation', 0, ... 'angleRange',[-25,205],'alpha',1,'lineWidth',6,'lineColor',[1,1,1]*0.9);ellipse.plotEllipse();d=[0 -0.3 -0.4 -0.6 -0.4 -0.3 0];for i=1:7 ellipse = EllipsePlotter('a',1.2, 'b', 3.3, 'x', 2.7+(i-1)*0.9, 'y', 5.5+d(i), ... 'plotType', 'fill', 'fillColor',[.4,.4,.4], 'rotation', 0, ... 'angleRange',[-200,20],'alpha',1,'lineWidth',6,'lineColor','none'); ellipse.plotEllipse();end% 脸pause(0.3)FaceColor=[1.0 0.9627 0.9235];ellipse = EllipsePlotter('a',3, 'b', 2.8, 'x',5.4, 'y',9, ... 'plotType', 'fill', 'fillColor',FaceColor, 'rotation', 0, ... 'angleRange',[0,360],'alpha',1,'lineWidth',2,'lineColor','none');ellipse.plotEllipse();% 眉毛、腮红、嘴pause(0.3)ellipse = EllipsePlotter('a',0.3, 'b',1, 'x',3.9, 'y',10.2, ... 'plotType', 'fill', 'fillColor',[1.0 0.65 0.63], 'rotation', 15, ... 'angleRange',[0,360],'alpha',1,'lineWidth',2,'lineColor','none');ellipse.plotEllipse();) j6 S9 Q9 O' m% Z2 K$ R( x
ellipse = EllipsePlotter('a',0.3, 'b',1, 'x',6.8, 'y',10.4, ... 'plotType', 'fill', 'fillColor',[1.0 0.65 0.63], 'rotation', 160, ... 'angleRange',[0,360],'alpha',1,'lineWidth',2,'lineColor','none');ellipse.plotEllipse();ellipse = EllipsePlotter('a',0.3, 'b',1, 'x',7, 'y',7.8, ... 'plotType', 'fill', 'fillColor',[1.0 0.65 0.63], 'rotation', 0, ... 'angleRange',[-200,20],'alpha',1,'lineWidth',2,'lineColor','none');ellipse.plotEllipse();ellipse = EllipsePlotter('a',0.3, 'b',1, 'x',4, 'y',7.6, ... 'plotType', 'fill', 'fillColor',[1.0 0.65 0.63], 'rotation', -10, ... 'angleRange',[-200,20],'alpha',1,'lineWidth',2,'lineColor','none');ellipse.plotEllipse();pause(0.3)ellipse = EllipsePlotter('a',.84, 'b',1.1, 'x',3.9, 'y',8.9, ... 'plotType', 'fill', 'fillColor',FaceColor, 'rotation', 0, ... 'angleRange',[0,360],'alpha',1,'lineWidth',2,'lineColor','none');ellipse.plotEllipse();ellipse = EllipsePlotter('a',.84, 'b',1.2, 'x',7, 'y',9, ... 'plotType', 'fill', 'fillColor',FaceColor, 'rotation', 0, ... 'angleRange',[0,360],'alpha',1,'lineWidth',2,'lineColor','none');ellipse.plotEllipse();%嘴巴pause(0.3)ellipse = EllipsePlotter('a',.3, 'b',.5, 'x',5.3, 'y',7.9, ... 'plotType', 'fill', 'fillColor',[0.9 0 0], 'rotation', 0, ... 'angleRange',[-180,0],'alpha',1,'lineWidth',2,'lineColor','none');ellipse.plotEllipse();
1 U8 @3 E# [0 w& p9 tellipse = EllipsePlotter('a',.5, 'b',.25, 'x',5.3, 'y',8, ... 'plotType', 'fill', 'fillColor',FaceColor, 'rotation', 0, ... 'angleRange',[-180,0],'alpha',1,'lineWidth',2,'lineColor','none');ellipse.plotEllipse();%眼袋pause(0.2)ellipse = EllipsePlotter('a',0.3, 'b',0.1, 'x',3.9, 'y',8.2, ... 'plotType', 'fill', 'fillColor',[1 1 1]*0.8, 'rotation', 0, ... 'angleRange',[0,360],'alpha',1,'lineWidth',2,'lineColor','none');ellipse.plotEllipse();ellipse = EllipsePlotter('a',0.3, 'b',0.11, 'x',7, 'y',8.2, ... 'plotType', 'fill', 'fillColor',[1 1 1]*0.8, 'rotation', 0, ... 'angleRange',[0,360],'alpha',1,'lineWidth',2,'lineColor','none');ellipse.plotEllipse();% 眼睛pause(0.3)ellipse = EllipsePlotter('a',0.7, 'b',0.6, 'x',3.9, 'y',9.1, ... 'plotType', 'fill', 'fillColor',[0 0 0], 'rotation', 0, ... 'angleRange',[0,360],'alpha',1,'lineWidth',2,'lineColor','none');ellipse.plotEllipse();ellipse = EllipsePlotter('a',0.7, 'b',0.6, 'x',7, 'y',9.1, ... 'plotType', 'fill', 'fillColor',[0 0 0], 'rotation', 0, ... 'angleRange',[0,360],'alpha',1,'lineWidth',2,'lineColor','none');ellipse.plotEllipse();% 心pause(0.3)t=0:0.025:2*pi;x=(16*sin(t).^3)/10+5.5;y=(13*cos(t)-5*cos(2*t)-2*cos(3*t)-cos(4*t))/10+4.8;fill(x,y,'r','edgecolor','r');%风车pause(0.3)plot([0 0.2],[9.5 7],'LineWidth',3,'Color',[0,0,1,0.5]) colors = {'r', 'g', 'b', 'y';'c', 'm', 'g','c'};L = 0.8;center = [0,9.5]; % 定义风车的圆心T=[0 pi/3];for j = 1:4 for i=1:2 theta1 = (j-1) * pi/2+T(i); theta2 = theta1 + pi/2; P0 = center; P1 = center + L * [cos(theta1), sin(theta1)]; P2 = center + L * [cos(theta2), sin(theta2)]; Psharp = (P1 + P2) / 2; fill([P0(1), P1(1), Psharp(1)], [P0(2), P1(2), Psharp(2)], colors{i,j},'EdgeColor','none','FaceAlpha',0.8); endend%手pause(0.3)ellipse = EllipsePlotter('a',3, 'b',0.8, 'x',8.5, 'y',6, ... 'plotType', 'fill', 'fillColor',[.4 .4 .4], 'rotation', -30, ... 'angleRange',[100,250],'alpha',1,'lineWidth',2,'lineColor',[1,1,1]*0.6);ellipse.plotEllipse();ellipse = EllipsePlotter('a',3, 'b',0.8, 'x',8.7, 'y',6.1, ... 'plotType', 'fill', 'fillColor',[.4 .4 .4], 'rotation', -30, ... 'angleRange',[100,250],'alpha',1,'lineWidth',2,'lineColor','none');ellipse.plotEllipse();pause(0.3)ellipse = EllipsePlotter('a',3, 'b',0.8, 'x',2.6, 'y',6, ... 'plotType', 'fill', 'fillColor',[.4 .4 .4], 'rotation',20, ... 'angleRange',[100,270],'alpha',1,'lineWidth',2,'lineColor',[1,1,1]*0.6);ellipse.plotEllipse();ellipse = EllipsePlotter('a',3, 'b',0.8, 'x',2.7, 'y',5.95, ... 'plotType', 'fill', 'fillColor',[.4 .4 .4], 'rotation',20, ... 'angleRange',[100,270],'alpha',1,'lineWidth',2,'lineColor','none');ellipse.plotEllipse();pause(0.3)tex=sprintf('不给糖果
+ G/ e( q+ |% L/ z9 c. V 就捣蛋');text(8,13,tex,'FontSize',30,'FontWeight','bold','Color','w');
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7 Z2 G/ L$ i, x其中绘制风车代码:hold onplot([0 0.2],[9.5 7],'LineWidth',3,'Color',[0,0,1,0.5]) colors = {'r', 'g', 'b', 'y';'c', 'm', 'g','c'};L = 0.8;center = [0,9.5]; % 定义风车的圆心T=[0 pi/3];for j = 1:4 for i=1:2 theta1 = (j-1) * pi/2+T(i); theta2 = theta1 + pi/2; P0 = center; P1 = center + L * [cos(theta1), sin(theta1)]; P2 = center + L * [cos(theta2), sin(theta2)]; Psharp = (P1 + P2) / 2; fill([P0(1), P1(1), Psharp(1)], [P0(2), P1(2), Psharp(2)], colors{i,j},'EdgeColor','none','FaceAlpha',0.8); endend p0 V( J; V! b+ m5 t4 d7 W* J
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3 a4 J; v" J# T' ~. `' V其中爱心代码:
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其中 EllipsePlotter类函数代码如下" g0 \9 q' m/ X* P* i
classdef EllipsePlotter properties a = 1; b = 1; x = 0; y = 0; angleRange = [0 2*pi]; rotation = 0; lineColor = 'b'; lineWidth = 1; plotType = 'plot'; fillColor = 'r'; alpha = 1; end methods function obj = EllipsePlotter(varargin) % Constructor if nargin > 0 for i = 1:2:nargin obj.(varargin{i}) = varargin{i+1}; end end startRadian = obj.angleRange(1) * pi / 180; endRadian = obj.angleRange(2) * pi / 180; theta = startRadian:pi/100:endRadian; end function plotEllipse(obj) startRadian = obj.angleRange(1) * pi / 180; endRadian = obj.angleRange(2) * pi / 180; theta = startRadian:pi/100:endRadian; X = obj.a * cos(theta); Y = obj.b * sin(theta); % 旋转坐标 rotationMatrix = [cosd(obj.rotation), -sind(obj.rotation); sind(obj.rotation), cosd(obj.rotation)]; xyRotated = [X; Y]' * rotationMatrix; % 将旋转后的椭圆平移到指定的位置 XY(:,1) = xyRotated(:,1) + obj.x; XY(:,2) = xyRotated(:,2) + obj.y; % 根据 plotType 来绘制椭圆 if strcmp(obj.plotType, 'plot') plot(XY(:,1), XY(:,2), '-', 'Color', obj.lineColor, 'LineWidth', obj.lineWidth); hold on; axis equal elseif strcmp(obj.plotType, 'fill') fill(XY(:,1), XY(:,2), obj.fillColor, 'EdgeColor', obj.lineColor, 'FaceAlpha', obj.alpha, 'LineWidth', obj.lineWidth); hold on; axis equal else error('无效的 plotType 参数!'); end end endend
1 _8 W3 e! B7 S0 [1 c属性 (properties)这些属性定义了椭圆的参数和绘图样式。
) V' H. r e! T- Q- ha, b: 椭圆的主轴和次轴的长度。
+ h/ n/ F U5 O) sx, y: 椭圆的中心位置。6 C5 J) x8 p s9 ~, s
angleRange: 绘制椭圆的角度范围。
% y% {9 _( y7 n5 D; drotation: 椭圆的旋转角度。8 F0 Z8 \" `: O+ u- |& x9 b
lineColor: 椭圆边界的颜色。
# V3 z8 m# F4 z0 z, E/ p# plineWidth: 椭圆边界的线宽。
- L8 ^- \ Y. J# Z. D+ E% |plotType: 绘图类型,可以是 'plot' 或 'fill'。9 I% J- Z/ T; Z9 R4 }
fillColor: 如果 plotType 是 'fill',则此属性定义填充颜色。; B; `( s) e. t& Q6 y X6 E3 ?. Q
alpha: 填充的透明度。1 B, M# {2 E E6 s D
方法 (methods)这些方法定义了类的功能。
8 B1 G8 k% p9 _6 D: u& ^构造函数 (EllipsePlotter):
, f6 O5 Q! C0 @- B当创建这个类的对象时,它会被调用。; v' T1 u h# r: f- q. g9 }
它接受一系列的名称-值对参数,允许在创建对象时设置属性。' A) t7 N% a2 I8 E/ \
它目前只计算了一个角度范围,但并没有使用这个范围做任何其他事情。
% l) T7 S9 j9 {plotEllipse:! p' V/ g3 Y0 K w% Y f
该方法根据对象的属性值绘制一个椭圆。
* x/ `8 X+ {* H它首先计算了椭圆上的点的坐标。: }# _0 M. `7 M2 ^8 N$ ^: O
然后根据 rotation 属性旋转这些点。
# X+ G& M; V6 o4 l8 i接着将旋转后的点平移到 x 和 y 属性指定的位置。
- ]6 {. M' z1 @5 H/ E最后,根据 plotType 属性选择绘制方式:'plot' 会绘制椭圆的轮廓,而 'fill' 会填充椭圆。6 l! a) ?: t. m# Z2 G4 l* M
[/ol]这个类可以使用户轻松地创建和定制椭圆的绘图,而不必每次都重复相同的计算和绘图代码。例如,用户可以轻松地更改椭圆的大小、位置、颜色和旋转,并立即看到结果。- -THE END- -
8 \) M1 L6 f7 H# C源码下载:gitee下载:https://gitee.com/iDMatlab/ghost
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- Z' M6 ] t1 w1 @8 @+ L参考资料:; \( D/ x) l+ u9 M7 o- J2 h
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& s4 r- k( N) s; M5 s2 P1 g2 I1 S包邮赠送 「北京大学出版社」赞助《AI时代Excel数据分析提升之道》AI时代Excel数据分析提升之道:知识精进+学习答疑+上机实训+综合实战+ChatGPT应用,零基础入门,极速提升数据分析效率!零基础入门宝典,由浅入深讲解,无须额外的背景知识即可学习掌握。内容系统全面,可帮助读者快速了解使用Python进行Excel数据分析的基本语法并掌握开发能力。理论与实践相结合,每个理论都有对应的代码示例,读者参考代码示例完成编写,就可以看到实践效果。本书配有实训与问答,方便读者阅读后尽快巩固知识点,做到举一反三、学以致用。AI前沿产品ChatGPT+Python进行Excel数据分析,大幅学习和分析的效率1 @3 T, t8 B) K
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