[R] plots of ACF

there any correlation structure? Which one might that be? AR1()? Also, I have used the plot of the empirical ACF of the normalized residuals, but it gives exactly the same results. Could you please help me? Best regards Sara Mouro Sara Maltez Mouro Centro de Ecologia Funcional Departamento

[R] different ACF results

? Is there any correlation structure? Which one might that be? AR1()? Also, I have used the plot of the empirical ACF of the normalized residuals, but it gives exactly the same results. Could you please help me? Best regards Sara Mouro Sara Maltez Mouro Centro de Ecologia Funcional

[R] how to join these two models?

Dear R users, I have this 2 models that fit to my data: M3varI <- update (M3, weights=varIdent(form= ~ 1|SITE)) M3AR1<-update(M3,correlation=corAR1()) The first one, updates my M3 so that I can account for the variance structure of random erros. The second one, updates my M3 so that I can ac

[R] uninitialized pdMat object

x from an uninitialized pdMat object Can anyone please help me? How do I update one Model using one of the pre-defined matrixes? Regards, Sara Mouro Sara Maltez Mouro Centro de Ecologia Funcional Departamento de Botânica Universidade de Coimbra [EMAIL PROTECTED] www.uc.pt/ecology/saramalte

[R] random parameters in nlme

Dear all, I am using the nlme package to find the best model using non-linear mixed effects model. After the all the other things needed, I did > M1<- nlme(NShrubs~A*exp(-B*CED),data=DataSg,fixed=list (A~SITE,B~1), random=B~1,start=list(fixed=c (1.66,1.66,1.66,1.66,1.66,1.66,1.66,1.66,0.00

[R] memory problems (not me. my pc!)

ize) Afterwards I have used memory.size as follows: > memory.size() [1] 14.10536 > memory.size(TRUE) [1] 19.1875 > round(memory.limit(), 2) [1] 254.98 How could I solve this problem? With another (i.e. with more memory) PC? How much memory do I nedd? 602.9? Best regards, Sara Mouro

[R] How to compile sources?

) so that I can use it in R (for MAC OS X). Could someone please explain it to me in an easiest way (i.e. to someone who has already "suffered" enough to learn R for herself, and knows little about programming)? Thank you in advance! Best regards,