Re: [R] convert numeric variables to factor

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Re: [R] convert numeric variables to factor

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[R] Heteroscedasticity in a percent-cover dataset

Hi, I am currently trying to do a GLMM on a dataset with percent cover of seagrass (dep. var) and a suite of explanatory variables including algal (AC) and epiphyte cover (EC), rainfall, temperature and sunshine hours. M2=glmer(SG~AC+EC+TP+SS+RF+(1|Location/fSi/fTr), family=binomial,data=data,n

[R] Plotting legend outside of chart area

rtyard", "Midden", "Animal Occupation", "External fire installations and ashy deposits", "Internal fire installations and ashy deposits", "Hearth make-up", "Floors and surfaces", "Plasters and clay features", "S

[R] deviance as a goodness of fit in GLM

is a good value to could indicate the best models, but I’m not sure how to choose the value. I thank you in advance for your time and the help you can give me. Best

[R] Fitting this data with a gaussian would be great

ply fit it with a non linear model, most likely a gaussian. Thanks in advance, Samantha [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting g

[R] Fitting a gaussian distribution to a plot

non-linear model so I type nlm(f,507680)? I have >tried reading up on this and looking for additional information on the >internet but I am truly stuck. Thank you in advance! Samantha __ R-help@r-project.org mailing list https://stat.ethz.ch/mailm

[R] Tracking time-varying objects with the DLM package (dynamic linear models in R)

Hello all, I am working with the dlm package, specifcially doing a dlm multivariate Y linear regression using dlmModReg and dlmFilter and dlmSmooth... I have altereted the inputs into dlmModReg to make them time-varying using JFF, JW etc. How do I track the results of the time varying system mat

Re: [R] Constraining parameters using tag() in SUR model - ZELIG

Arne, Thanks for the help. Ill make sure to cite systemfit along with Zelig. I cannot see how to constrain parameters based on the manual when there is more than 2 eqs using the M Matrix. I have 10 eqns with 6 parameters each and need to constrain all 6 across the 10 equations. For example B1s n

[R] Constraining parameters using tag() in SUR model - ZELIG

Hello all, I am following some standard code from Zelig manual when using a SUR (Seemingly Unrelated Regression Model) to constrain parameters across equations. Please see code below: setwd("C:/Research/Economics/SUR_FX/Model") # Seemingly Unrelated Regression # Load our library. library(Zelig)

[R] Help with spdep package issue with errorsarlm

Hi List, I am hoping some of you have experience with the spdep package. I have had success with lm.morantest and lm.LMtests. I am trying to run a spatial error model and I keep getting the following error Error in res[i, listw$neighbours[[i]]] <- listw$weights[[i]] : NAs ar

[R] Help with spdep package issue with errorsarlm

Hi List, I am hoping some of you have experience with the spdep package. I have had success with lm.morantest and lm.LMtests. I am trying to run a spatial error model and I keep getting the following error Error in res[i, listw$neighbours[[i]]] <- listw$weights[[i]] : NAs

[R] Why is my data always imported as a list?

Hi, I am a relatively new to R. So, this is probably a really basic issue that I keep hitting. I read my data into R using the read.csv command: x = rep("numeric", 3) CB_un=read.csv("Corn_Belt_unirr.csv", header=TRUE, colClasses=c("factor", x)) # I have clearly told R that I have one factor v

[R] Replicate weights in R?

and/or code for performing this action. Thank you for your time. Samantha Tornello, M.A. University of Virginia [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do

[R] PCA R

Hello can anyone help, I have been running the following script to obtain a PCA plot but the end result is rather disappointing as the points are very very small and there are no titles etc geochemdata<-read.csv(file.choose(),header=TRUE) names(geochemdata) library(vegan) bstick<-function(n,

[R] Sorting DataFrames

I am a new user, and i am trying to sort out a data frame. I have for example bins of data. Within each bin i have multiple counts of animals and the depths at which these count were taken. How would I summarise this to being only the maximum count per bin alongisde the corresponding height

Re: [R] invalid 'row.names' length error when running scatterplots or plot in R Commander

tudents and will report back. Cheers, Sam -Original Message- From: Dejian Zhao [mailto:dejian.z...@gmail.com] Sent: Monday, 20 September 2010 5:32 PM To: r-help@r-project.org Cc: Samantha McKenzie Subject: Re: [R] invalid 'row.names' length error when running scatterplots or plot in

[R] invalid 'row.names' length error when running scatterplots or plot in R Commander

Hello, I teach statistics and use R Commander for teaching. I have 2 students out of 169 that can't get scatterplots or plot to work. I have had them update packages, restart R/R Commander/their computers and even reinstall R/R Commander. One is using Windows 7 on a new pc and the other is a pc use

Re: [R] Random slopes in lmer

ect A Many Thanks Sam Dr Samantha Patrick EU INTERREG Post Doc Davy 618 Marine Biology & Ecology Research Centre University of Plymouth Plymouth PL4 8AA T: 01752 586165 M: 07740472719 -Original Message- From: Darin A. England [mailto:engl...@cs.umn.edu] Sent: 26 August 2010 1

[R] Random slopes in lmer

and can't find the answer anywhere. Thanks Sam Dr Samantha Patrick EU INTERREG Post Doc Davy 618 Marine Biology & Ecology Research Centre University of Plymouth Plymouth PL4 8AA T: 01752 586165 M: 07740472719 [[alternative HTML ver

[R] Unequal variance ANOVA using gls function in nlme

anyone guide me as to how to fit this into the model? As the model is very simple, I think that the variance is the only component I need to estimate for the model, but perhaps I am mistaken? Thanks Sam Dr Samantha Patrick EU INTERREG Post Doc Davy 618 Marine Biology & Ecology Research Ce

[R] variance-covariance matrix of mlest in library(mvnmle)

How does mlest generate the estimate for sigmahat, the variance-covariance matrix? It produces different values than when using cov(data.frame). -- View this message in context: http://r.789695.n4.nabble.com/variance-covariance-matrix-of-mlest-in-library-mvnmle-tp2232127p2232127.html Sent from

[R] error bars on barplot

Hi I was hoping someone might be able to help me I have this data: birdid timetaken numvisits ptachchoice time bold 1087 810 1 AM0 108728 6 1 PM0 108713 3 2 AM0 1087 121 0

[R] Creating two lines of best fit on a scatter plot

Hello I am trying to plot two lines of best fit on a scatter plot. I'm plotting number of visits (y) against personality (x), half the plots are blue for patchchoice one and the other plots are red for patchchoice two (these options come from one factor, see below) . So i need a line for

[R] Creating two lines of best fit on a scatter plot

Hello I am trying to plot two lines of best fit on a scatter plot. I'm plotting number of visits (y) against personality (x), half the plots are blue for patchchoice one and the other plots are red for patchchoice two (these options come from one factor, see below) . So i need a line for

[R] cluster analysis labels for dendrogram

cluster analysis itself. Is there any way I can do this? Thanks, Samantha -- View this message in context: http://n4.nabble.com/cluster-analysis-labels-for-dendrogram-tp1588347p1588347.html Sent from the R help mailing list archive at Nabble.com. __ R