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## Re: Successive Over-Relaxation ... what is wrong? Improvements?

**From**: |
Joza |

**Subject**: |
Re: Successive Over-Relaxation ... what is wrong? Improvements? |

**Date**: |
Tue, 6 Nov 2012 08:03:00 -0800 (PST) |

Thanks for the info...stuff to think about! Besides all this, is there any
neat ways to speed up plain old FOR loops using vectors? For example, the
ones I have below:
for i=1:n
sum = 0.0;
if i==1
for j=1:2
sum = sum + A(i,j)*x(j);
end
elseif i==n
for j=n-1:n
sum = sum + A(i,j)*x(j);
end
else
for j=i-1:i+1
sum = sum + A(i,j)*x(j);
end
end
--
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**Re: Successive Over-Relaxation ... what is wrong? Improvements?**, *(continued)*
**Re: Successive Over-Relaxation ... what is wrong? Improvements?**, *Joza*, `2012/11/04`
**Re: Successive Over-Relaxation ... what is wrong? Improvements?**, *c.*, `2012/11/04`
**Re: Successive Over-Relaxation ... what is wrong? Improvements?**, *Joza*, `2012/11/04`
**Re: Successive Over-Relaxation ... what is wrong? Improvements?**, *Sergei Steshenko*, `2012/11/04`
**Re: Successive Over-Relaxation ... what is wrong? Improvements?**, *Joza*, `2012/11/04`
**Re: Successive Over-Relaxation ... what is wrong? Improvements?**, *Ed Meyer*, `2012/11/04`
**Re: Successive Over-Relaxation ... what is wrong? Improvements?**, *Ed Meyer*, `2012/11/04`
**Re: Successive Over-Relaxation ... what is wrong? Improvements?**, *Joza*, `2012/11/05`
**Re: Successive Over-Relaxation ... what is wrong? Improvements?**, *Joza*, `2012/11/05`
**Re: Successive Over-Relaxation ... what is wrong? Improvements?**, *Sergei Steshenko*, `2012/11/05`
**Re: Successive Over-Relaxation ... what is wrong? Improvements?**,
*Joza* **<=**
**Re: Successive Over-Relaxation ... what is wrong? Improvements?**, *Joza*, `2012/11/06`
**Re: Successive Over-Relaxation ... what is wrong? Improvements?**, *marco atzeri*, `2012/11/06`
**Re: Successive Over-Relaxation ... what is wrong? Improvements?**, *Joza*, `2012/11/06`