Yes, something is wrong. You're comparing floating point numbers for equality. See the FAQ for workarounds and the proper way to do it: http://matlab.wikia.com/wiki/FAQ#Why_is_0.3_-_0.2_-_0.1_.28or_similar.29_not_equal_to_zero.3F
if cycle is not working
2 次查看(过去 30 天)
显示 更早的评论
Hello! while solving an exercise the if cycle is not working. Is anything wrong? Thanks
L=1; xfinal=L;
u=[];
x_inicial=0; dx=xfinal/20;
x=x_inicial:dx:xfinal;
t=0; dt=0.0001; t_max=1.1;
c=zeros(1,length(x));
c(((xfinal/dx)/2+1))=1;
while t<t_max
t=t+dt;
for w=2:(length(x)-1)
c(w)=c(w)+dt*((c(w+1)+c(w-1)-2*c(w))/(dx^2));
c(1)=0; c(length(x))=0;
end
if t==0.01||t==0.1||t==1
figure()
plot(x,c)
title(sprintf('L=%d and t_f=%1.1f',xfinal,t))
end
end
0 个评论
采纳的回答
更多回答(0 个)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Startup and Shutdown 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!