search for: knell

...$y[512-p +1],peak2<-512-p,break) #identifies second peak in probability distribution but the simulation sometimes produces a small third peak at one end of the distribution. Is there any simple way to identify the two highest maxima in a trimodal distribution? Thanks for any help Rob Knell School of Biological and Chemical Sciences Queen Mary, University of London 'Phone +44 (0)20 7882 7720 Skype Rob Knell Research: http://www.qmw.ac.uk/~ugbt794 Giant edible caterpillars: http://www.mopane.org Invertebrate macro photography: http://web.mac.com/rknell/iWeb/Bugsite "The t...

...freedom should I use? I would guess at df=n1-5+n2-5 5 df lost for each sample because two slopes, two intercepts and one switchpoint have been estimated, but I'm not sure: I'm but a humble biologist and not very good at this sort of thing. Any help gratefully received Thanks Rob Knell School of Biological and Chemical Sciences Queen Mary, University of London 'Phone +44 (0)20 7882 7720 Skype Rob Knell Research: http://webspace.qmul.ac.uk/rknell/ "The truth is that they have no clue why the beetles had horns, it's the researchers who have sex on the brain an...

...39; comments. If I have a fully randomised blocked design, with only three blocks, should I treat block as a random or fixed effect? I have read comments about not treating block as a random effect if the number of blocks is less than 6 or 7: is this right? Any advice much appreciated Rob Knell School of Biological and Chemical Sciences Queen Mary, University of London 'Phone +44 (0)20 7882 7720 Skype Rob Knell Research: http://webspace.qmul.ac.uk/rknell/

...oing this when I can just cut and paste out of Excel/Statistica/Minitab'. I realise that this is arguably more of a problem with Word or Textedit, but does anyone know of a good easy solution to this that I can use as part of my program to evangelise my colleagues? Thanks for any help Rob Knell

...een dealt with before elsewhere, b) if there's a better way to do it and c) if my R function could be improved at all - it's my first attempt at such a thing, so any input would be really helpful. If anyone wants a sample data set then I can email you one. Thanks for any input Rob Knell School of Biological Sciences Queen Mary, University of London 'Phone +44 (0)20 7882 7720 http://www.qmw.ac.uk/~ugbt794 http://www.mopane.org Here's the code: switchline<- function(X,Y,Intmin,Intmax,Intgap,Slopemin,Slopemax,Slopegap) { # X = unimodal variable (e.g. f...

Hello Can anyone let me know how I might change the size of the numbers on the axes in a pairs plot? The normal cex.axis call doesn't do anything, cex.labels only seems to change the font size in the diagonal labels. Using R 1.8.0 on a Mac with OS X.3. Thanks Rob Knell

...which would give a surface with some corners missing. I can't see any way of specifying parts of the grid that should not be drawn: can anyone enlighten me? Alternatively, is it possible to shade specified squares of the plot to indicate the important parts of it? Thanks for any help Rob Knell School of Biological Sciences Queen Mary, University of London

...ta that gives good results when used without segmented in the function. I'm even giving it the exact right value of the breakpoint to start with in its estimation. If anyone could give me some advice on where I'm going wrong, I would be very pleased to hear it. Thanks everyone Rob Knell School of Biological Sciences Queen Mary, University of London 'Phone +44 (0)20 7882 7720 Skype Rob Knell http://www.qmw.ac.uk/~ugbt794 http://www.mopane.org "The truth is that they have no clue why the beetles had horns, it's the researchers who have sex on the brain and everythi...

...elp files from the NLME package and I'm afraid I remain baffled :-(. Particularly confusing is exactly what groupedData does, how I should use it to define the structure of my dataset and how I then use that to define a model in LME. So pretty much everything then. Thanks for any help Rob Knell

...intl/lang_tdb.c:lang_tdb_init(135) lang_tdb_init: /usr/lib/samba/en_GB.UTF-8.msg: No such file or directory [2005/06/17 18:41:55, 2] utils/net.c:main(902) return code = -1 ----log end------ The crux of the matter seems to be the (non-fatal) failure on ads_set_machine_sd() but the actual death-knell is the failure of do_krb5_kpasswd_request() - I seem to recall that the "Message stream modified" is a low-level Kerberos error? Googling around reveals a handful of similar (though not identical problems, most with no published resolution. :-/ I'm happy to run various tests to prov...

Hello all I'm trying to run some path analysis in either sem or lavaan (preferably lavaan because I find its interface easier to use). Most of my variables are continuously distributed and fairly well-behaved but I have a single exogenous variable (sex) which is not continuously distributed. Preliminary model fitting suggests that there aren't any sex by (anything else) interactions. The