Re: NLSCON

[Bill Denney]

Sorry, I didn't mean to say that it would solve the problem, I meant to 
point out that there were options for nonlinear regression in netlib. 
NNLS is just one that I'd used before.  More are available here: 
http://netlib.org/lawson-hanson/all
and I know that in the Lawson-Hanson book that they have what he was 
looking for.

Bill

On Thu, 18 Aug 2005, John W. Eaton wrote:

> On 18-Aug-2005, Bill Denney wrote:
>
> | In addition to this, there are free solutions available from netlib like
> | nnls that could probably be rather easily added (I know that we already
> | have lsode).
>
> The comments at the top of the NNLS subroutine say:
>
>  C     GIVEN AN M BY N MATRIX, A, AND AN M-VECTOR, B,  COMPUTE AN
>  C     N-VECTOR, X, THAT SOLVES THE LEAST SQUARES PROBLEM
>  C
>  C                      A * X = B  SUBJECT TO X .GE. 0
>
> so this is a very limited type op optimization.  We would like to have
> a general NLP solver that is also free software.
>
> jwe

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