search for: biuw

Hi, Is there a function in R to calculate the nth root, similar to the MATLAB function NTHROOT()? Thanks, Martin Biuw [[alternative HTML version deleted]]

Hi, Sorry if this is an obvious one, but is there a simple way to modify the lm function to test whether a slope coefficient is significantly different from 1 instead of different from 0? Thanks, Martin Martin Biuw SEA MAMMAL RESEARCH UNIT Gatty Marine Laboratory School of Environmental and Evolutionary Biology University of St Andrews Fife, Scotland KY16 8LB UK phone +44 (0)1334 462630 fax + 44 (0)1334 462632 http://www.smru.st-and.ac.uk http://www.smru.st-and.ac.uk/research/individuals/martinbiuw.htm [[al...

Hello, Once again, I posted a message without a subject line. Sorry.... here is the question again. Is there a simple way to modify the circ.mean function in the CircStats package to include a vector of weights to obtain a weighted average angle? Thanks! Martin -- Martin Biuw Sea Mammal Research Unit Gatty Marine Laboratory, University of St Andrews St Andrews, Fife KY16 8PA Scotland Ph: +44-(0)1334-462637 Fax: +44-(0)1334-462632 Web: http://smub.st.and.ac.uk

...uot; compared to the overall mean, but still only gives me the effects of the second two levels in the "Year" factor compared to the first level. How do I specify the fixed effects structure to allow comparisons to the overall mean for each level of both factors? Many thanks, Martin Biuw Martin Biuw SEA MAMMAL RESEARCH UNIT Gatty Marine Laboratory School of Environmental and Evolutionary Biology University of St Andrews Fife, Scotland KY16 8LB UK phone +44 (0)1334 462630 fax + 44 (0)1334 462632 http://www.smru.st-and.ac.uk http://www.smru.st-and.ac.uk/research/individuals/martinb...

...is only when I use a smaller subset that the error occurs, possibly due to noisy data. But I would very much appreciate if someone could clarify whether the error message is wrong or if my statement to the "control" argument is wrong. Thanks very much in advance, Martin -- Dr Martin Biuw NERC Postdoctoral research fellow Sea Mammal Research Unit Gatty Marine Laboratory University of St Andrews St Andrews, Fife KY16 8LB Scotland Ph: +44-(0)1334-462677 Fax: +44-(0)1334-462632 www: http://www.smru.st-and.ac.uk

Hello all, Does anyone know of any already written functions for carrying out stochastic dynamic programming in R? Thanks! Martin -- Martin Biuw Sea Mammal Research Unit Gatty Marine Laboratory, University of St Andrews St Andrews, Fife KY16 8PA Scotland Ph: +44-(0)1334-462637 Fax: +44-(0)1334-462632 Web: http://smub.st.and.ac.uk

...on my machine, this is not really an option. I'm working in Windows 7 (64-bit) on an x86 machine (build 7601, Service Pack 1), running R 2.14.1 in MDI mode. I'd be very grateful for any suggestions! Regards, Martin ________________________________________________________________ Martin Biuw (PhD) Postdoctoral Research Fellow Norwegian Institute for Nature Research - NINA Postal address: Framsenteret, 9296 Tromsø, NORWAY Delivery/Visiting address: Framsenteret, Hjalmar Johansens gate 14, 9007 Tromsø, NORWAY Phone: +47 77 75 04 17 * Cell: +47 40 72 96 15 * Fax: +47 77 75 04 01 * www.ni...

Hello, I've written a simple (although probably overly roundabout) function to test whether two regression slope coefficients from two linear models on independent data sets are significantly different. I'm a bit concerned, because when I test it on simulated data with different sample sizes and variances, the function seems to be extremely sensitive both of these. I am wondering if

it seems that word can not read encapsupalted postscripts generated by R I used this command postscript("output.eps",horizontal=F,onefile=TRUE) since onefile=TRUE produces an encapsualted postscript actually what I'm trying to do is to insert the postsript file into a word document since other formats like jpeg and bmp do not reproduce the same quality like postscript formats any