I want to draw an ellipse.

Question

Muhendisleksi 2017-10-8

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/360281-i-want-to-draw-an-ellipse

评论： KSSV 2017-10-9

a = [3,43297558626052
3,87411756739963
3,48864274576452
5,73273061981691];
b = [2,28896810981967
3,12258785934561
2,33941014244949
4,83050996666401];
tetha =[39,0479375074525
372,239032928828
164,091747332544
232,681387669483]
x0 = 0;
y0 = 0;
for i =length(a)
    t = -tetha(i):0.01:tetha(i);
    x(i,1) = xo + a(i)*cos(t)  %there is an error here.
    y(i,1) = yo + b(i)*sin(t)
    plot(x(i),y(i))    
end

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Answer 1

KSSV 2017-10-9

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/360281-i-want-to-draw-an-ellipse#answer_284861

在 MATLAB Online 中打开

a = [3,43297558626052
3,87411756739963
3,48864274576452
5,73273061981691];
b = [2,28896810981967
3,12258785934561
2,33941014244949
4,83050996666401];
tetha =[39,0479375074525
372,239032928828
164,091747332544
232,681387669483] ;
x0 = 0;
y0 = 0;
X = cell(length(a),1) ;
Y = cell(length(a),1) ;
figure
hold on
for i =1:length(a)
    t = -tetha(i):0.01:tetha(i);
    X{i} = x0 + a(i)*cos(t) ;  %there is an error here.
    Y{i} = y0 + b(i)*sin(t) ;
    plot(X{i},Y{i})    
end

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Muhendisleksi 2017-10-9

在 MATLAB Online 中打开

A = [2.026619126924945];
B = [0.859242349038952];
xo = 0;
yo = 0;
figure
hold on
for i =1:length(a)
    t = -tetha(i):0.01:tetha(i);
    x = xo + A(i)*cos(t);
    y = yo + B(i)*sin(t);
    plot(x,y,'r')    
end
a = [3,43297558626052
3,87411756739963
3,48864274576452
5,73273061981691];
b = [2,28896810981967
3,12258785934561
2,33941014244949
4,83050996666401];
tetha =[39,0479375074525
372,239032928828
164,091747332544
232,681387669483] ;
x0 = 0;
y0 = 0;
X = cell(length(a),1) ;
Y = cell(length(a),1) ;
figure
hold on
for i =1:length(a)
    t = -tetha(i):0.01:tetha(i);
    X{i} = x0 + a(i)*cos(t) ;  %there is an error here.
    Y{i} = y0 + b(i)*sin(t) ;
    plot(X{i},Y{i})    
end