Gents,
I noticed that QR and LU have this functionality, but I thought it would be
a bit of a hack. I have the 15 lines of code ready. I will submit it.
-Greg
On Wed, Jul 20, 2011 at 12:54 AM, Phil Steitz wrote:
> On 7/19/11 9:55 PM, Greg Sterijevski wrote:
> > Hello,
> >
> > I was working on
On 7/19/11 9:55 PM, Greg Sterijevski wrote:
> Hello,
>
> I was working on some regression issues when I stumbled into the need to
> solve a system like
>
> R y = b or R'y = b.
>
> R is an upper or lower triangular, b is a vector.
>
> Does this functionality exist? If not, can I add it? And where?
Can you just use the back-substitution phase of an LUD or QR solver?
On Tue, Jul 19, 2011 at 9:55 PM, Greg Sterijevski wrote:
> Hello,
>
> I was working on some regression issues when I stumbled into the need to
> solve a system like
>
> R y = b or R'y = b.
>
> R is an upper or lower triangular,
Hello,
I was working on some regression issues when I stumbled into the need to
solve a system like
R y = b or R'y = b.
R is an upper or lower triangular, b is a vector.
Does this functionality exist? If not, can I add it? And where?
Thanks,
-Greg
