no puedo plotear en mi codigo

Question

Ricardo David 2022-10-30

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1839508-no-puedo-plotear-en-mi-codigo

回答： Gokul Nath S J 2023-5-26

%R1=3;% radio de las bandas 
%R2=2;
bi=1; %espaciado;
%h=100;
%descenso
tr=linspace(pi,0,100);
tr1=linspace(2*pi,pi,100); 
tr12=linspace(pi,0,100);
%elipse externa 
a=[3*cos(tr) 3*cos(tr1)];
b=[3*sin(tr) 3*sin(tr1)-6];
%interna
a1=[2*cos(tr) 2*cos(tr1)];
b1=[2*sin(tr) 2*sin(tr1)-6];
% la separacion para cada banda es = b 
c=[(bi*tr12)/2*pi];
c=[c+14 c+13 c+12 c+11 c+10 c+9 c+8 c+7 c+6 c+5 c+4 c+3 c+2 c+1];
%ascenso 
tr2= linspace(0,pi,100); tr22=linspace(pi,2*pi,100); tr23=linspace(0,pi,100);
a2=[3*cos(tr2) 3*cos(tr22)];
b2=[3*sin(tr2) 3*sin(tr22)-4];
%interna
a3=[2*cos(tr2) 2*cos(tr22)];
b3=[2*sin(tr2) 2*sin(tr22)-6];
%separacion es de 2 
c1=[(bi*tr23)/(2*pi)];
c1=[c1+0 c1+2 c1+4 c1+6 c1+8 c1+10 c1+12 c1+14];
for i=1:3
    a=[a a];
    b=[b b];
    a1=[a1 a1];
    b1=[b1 b1];
    a2=[a2 a2];
    b2=[b2 b2];
    a3=[a3 a3];
    b3=[b3 b3];
end
%linea cruzada
tz=linspace (0,pi/4,100);
tz1=linspace(pi/4,pi/2,100);
a4=[3*cos(tz) cos(3*pi/2)-tz1];
b4=[3*sin(tz)-6 sin((3*pi/2)-tz1)];
a5=[cos(tz) 3*cos((3*pi/2)-tz1)];
b5=[sin(tz)-6 3*sin((3*pi/2)-tz1)];
c2=c1(end)*ones(1,200);
%graficas 
plot3(a2,b2,c1,'r');
Error using plot3
Vectors must be the same length.
hold on 
plot3(a3,b3,c1,'m');
plot3(a,b,c,'r');
hold on 
plot3(a1,b1,c,'b');
plot3(a4,b4,c2,'g');
plot3(a5,b5,c2,'c');
xlim([-3 3]);
xlabel('axis x')
ylabel('axis y')
zlabel('axis z')
title('banda transportadora')
hold off

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Jan 2022-10-30

I've included the error message in the question. It is easier to solve a problem than to guess, what the problem is.

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Answer 1

Gokul Nath S J 2023-5-26

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Hi Ricardo,

It seems that you are receving an error mentioning the vectors are of different length. The variable c1 is of length 800 while the other variables a2 and b2 are 1600. Please note that this difference is attributed to the fact that you are concatinating two matrixes together in the following lines.

a2=[3*cos(tr2) 3*cos(tr22)];
b2=[3*sin(tr2) 3*sin(tr22)-4];

Since the objective of the function is not mentioned in the question, as I workaround, I would suggest you check the dimension of the a2, b2 and c1 variable and understand whether there is a requirement for the concatenation or you might have missed the concatination of the variable c1.

with regards,

Gokul Nath S J