用ezplot函数在matlab中绘制图形我想绘制一个以(0 5 5)和(0 -20000 20000)为焦点的椭球被X-Y平面所截的椭圆.程序如下:R=[0 5 5];T=[0 -20000 20000];syms x y l=norm(R)+norm(T);l=l+50;ezplot('((x^2+(y-R(2))^2+R(3)^2)
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![用ezplot函数在matlab中绘制图形我想绘制一个以(0 5 5)和(0 -20000 20000)为焦点的椭球被X-Y平面所截的椭圆.程序如下:R=[0 5 5];T=[0 -20000 20000];syms x y l=norm(R)+norm(T);l=l+50;ezplot('((x^2+(y-R(2))^2+R(3)^2)](/uploads/image/z/1745085-21-5.jpg?t=%E7%94%A8ezplot%E5%87%BD%E6%95%B0%E5%9C%A8matlab%E4%B8%AD%E7%BB%98%E5%88%B6%E5%9B%BE%E5%BD%A2%E6%88%91%E6%83%B3%E7%BB%98%E5%88%B6%E4%B8%80%E4%B8%AA%E4%BB%A5%EF%BC%880+5+5%EF%BC%89%E5%92%8C%EF%BC%880+-20000+20000%EF%BC%89%E4%B8%BA%E7%84%A6%E7%82%B9%E7%9A%84%E6%A4%AD%E7%90%83%E8%A2%ABX-Y%E5%B9%B3%E9%9D%A2%E6%89%80%E6%88%AA%E7%9A%84%E6%A4%AD%E5%9C%86.%E7%A8%8B%E5%BA%8F%E5%A6%82%E4%B8%8B%EF%BC%9AR%3D%5B0+5+5%5D%3BT%3D%5B0+-20000+20000%5D%3Bsyms+x+y+l%3Dnorm%28R%29%2Bnorm%28T%29%3Bl%3Dl%2B50%3Bezplot%28%27%28%28x%5E2%2B%28y-R%282%29%29%5E2%2BR%283%29%5E2%29)
用ezplot函数在matlab中绘制图形我想绘制一个以(0 5 5)和(0 -20000 20000)为焦点的椭球被X-Y平面所截的椭圆.程序如下:R=[0 5 5];T=[0 -20000 20000];syms x y l=norm(R)+norm(T);l=l+50;ezplot('((x^2+(y-R(2))^2+R(3)^2)
用ezplot函数在matlab中绘制图形
我想绘制一个以(0 5 5)和(0 -20000 20000)为焦点的椭球被X-Y平面所截的椭圆.程序如下:
R=[0 5 5];
T=[0 -20000 20000];
syms x y
l=norm(R)+norm(T);
l=l+50;
ezplot('((x^2+(y-R(2))^2+R(3)^2))^2+((x^2+(y-T(2))^2+T(3)^2))^2-l^2 ');
hold on
运行后错误如下:
? Error using ==> inlineeval at 15
Error in inline expression ==> ((x.^2+(y-R(2)).^2+R(3).^2)).^2+((x.^2+(y-T(2)).^2+T(3).^2)).^2-l.^2
Undefined function or method 'R' for input arguments of type 'double'.
Error in ==> inline.feval at 36
INLINE_OUT_ = inlineeval(INLINE_INPUTS_, INLINE_OBJ_.inputExpr, INLINE_OBJ_.expr);
Error in ==> ezplotfeval at 54
z = feval(f,x(1),y(1));
Error in ==> ezplot>ezimplicit at 258
u = ezplotfeval(f, X, Y);
Error in ==> ezplot at 155
hp = ezimplicit(cax, f{1}, vars, labels, args{:});
Error in ==> Delay at 12
ezplot('((x^2+(y-R(2))^2+R(3)^2))^2+((x^2+(y-T(2))^2+T(3)^2))^2-l^2 ');
特别不明白.望能有大神前来指导~叩谢~
我想画多个同心椭圆,算式中那些系数需要变化,所以用想用参数代替,但是貌似ezplot不支持含参方程.有没有其他办法?
用ezplot函数在matlab中绘制图形我想绘制一个以(0 5 5)和(0 -20000 20000)为焦点的椭球被X-Y平面所截的椭圆.程序如下:R=[0 5 5];T=[0 -20000 20000];syms x y l=norm(R)+norm(T);l=l+50;ezplot('((x^2+(y-R(2))^2+R(3)^2)
貌似ezplot不支持调用变量,R(2),R(3).这些东西导致了错误.