search for: bookcpdf

Hi All, I want to fit a straight line into a group of two-dimensional data points with errors in both x and y coordinates. I found there is an algorithm provided in "NUMERICAL RECIPES IN C" http://www.library.cornell.edu/nr/bookcpdf/c15-3.pdf I'm wondering if there is a similar function for this implemented in R. And how can I change the objective function, from example, from sum of squared error to sum of absolute error? Regards, Chongle

Hello, I am searching for code in C++ or fortran for Modified Bessel function of third kind (fractional or real order). Can someone help me? Thank you --------------------------------- Découvrez un nouveau moyen de poser toutes vos questions quelque soit le sujet ! Yahoo! Questions/Réponses pour partager vos connaissances, vos opinions et vos expériences. Cliquez ici.

Hello, I want to find the roots of an equation in two variables. I am aware of the uniroot function, which can do this for a function with a single variable (as I understand it...) but cannot find a function that does this for an equation with more than one variable. I am looking for something implementing similar to a Newton-Raphson algorithm. Thanks. -- Bill Shipley North American Editor for