[R] roxygen2

2014-07-20 Thread Kevin Kunzmann
Hi, I have developed a package and would like to switch documentation to roxygen2 from manual :) However roxygen2::roxygenize() First time using roxygen2 4.0. Upgrading automatically... Loading required package: nleqnslv Error in file(filename, r, encoding = encoding) :

[R] multiplicative error

2014-07-12 Thread Kevin Kunzmann
Hi, I am currently trying to build a regression model for calibration of HPLC outputs. I decided to use a multiplicative error model: Y_i = (a*X_i + b)*eps_i where the eps_i ~ iid N(0, s^2). Now I am having a hard time estimating my parameters ;) So the idea was to apply log() to both