[R] R multiline expression grief

2009-03-13 Thread Paul Suckling
Dear all. After much grief I have finally found the source of some weird discrepancies in results generated using R. It turns out that this is due to the way R handles multi-line expressions. Here is an example with R version 2.8.1: #

Re: [R] R multiline expression grief

2009-03-13 Thread Paul Suckling
like f - a ... + b ... + c Cheers, Paul 2009/3/13 Paul Suckling paul.suckl...@gmail.com: Dear all. After much grief I have finally found the source of some weird discrepancies in results generated using R. It turns out that this is due to the way R handles multi-line expressions. Here

Re: [R] Non-constant variance and non-Gaussian errors with gnls

2008-09-03 Thread Paul Suckling
here know of any? Thank you, Paul 2008/9/2 Paul Suckling [EMAIL PROTECTED]: I have been using the nls function to fit some simple non-linear regression models for properties of graphite bricks to historical datasets. I have then been using these fits to obtain mean predictions

[R] Non-constant variance and non-Gaussian errors with gnls

2008-09-02 Thread Paul Suckling
I have been using the nls function to fit some simple non-linear regression models for properties of graphite bricks to historical datasets. I have then been using these fits to obtain mean predictions for the properties of the bricks a short time into the future. I have also been calculating