Plotting help, my graph turns very clunky

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Japoe25
Japoe25 2015-4-27
评论： Japoe25 2015-4-27
I'm trying to recreate the image attached of a elliptical spiral staircase but it's not working out too well. Please help!
function z = my_staircase(a,b,h,n)
tv = 0:2*pi*n;
for k1 = 1:length(tv)
t = tv(k1);
r=((a*b)*exp(-.04*t))/sqrt((b*cos(t)^2)+ (a*sin(t))^2);
x(k1)=r*cos(t);
y(k1)=r*sin(t);
z(k1)=(h*t)/(2*pi*n);
end
hold on
plot3(x,y,z)
xlabel('x(m)'); ylabel('y(m)');zlabel('z(m)');
grid on
view([-30 30])
end
The graph I got was for my_staircase(20,10,100,7) :
%

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回答（1 个）

Mischa Kim
Mischa Kim 2015-4-27
编辑：Mischa Kim 2015-4-27
Japoe25, just add more data points. E.g.,
tv = 0:0.1:2*pi*n; % 0.1 is the spacing between data points

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