F90/C Weighted Linear Regression Code

[natski]

Hi Guys,

Can anyone recommend a code, preferably in fortran 90/77, or possibly in C, which provides a weighted linear regression of a 3 column file?

Natski

[silverfrost]

There will be routines in Simfit to do it (not sure specifically about a 3 column file): http://simfit.silverfrost.com/

[natski]

Hmm thanks but I'm really looking for a short routine in Fortran or C.