similar to: Easy method to set user-mode virtual memory space in Windows Vista and 7

Let me begin stating that I read all help files and faq's on the subject matter (there aren't more than about a dozen) but either did not find solutions or found them not to work. Here is the issue. I am trying to run a spatial regression on a medium-sized dataset. Part of the functions in the spdep package I use require me to allocate a vector of 1.1 Gb (mine is not a spatial SIG

Hola a todos, Tengo un equipo con windows 7 Home Premium 64 bits (8mb de RAM) y me gustaría saber como podría obtener el máximo rendimiento en R. He visto que hay dos o tres comandos: memory.size(max=TRUE) memory.limit = ... El caso es que si uso memory.size(max=TRUE) el maximo que me imprime por pantalla es bastante mayor en un equipo que tengo con windows xp a 32 bits que en el nuevo equipo

Hi, I would like to use a weighted lm model to reduce heteroscendasticity. I am wondering if the only way to generate the weights in R is through the laborious process of trial and error by hand. Does anyone know if R has a function that would automatically generate the weights need for lm? Thanks, -- Tom [[alternative HTML version deleted]]

How can I print the definition of a function that is in the base package? for example, if I type: which.min I get function (x) .Internal(which.min(x)) <environment: namespace:base> How can I see the definition of this function? Thanks.

Hi, I need to correct for ar(1) behavior of my residuals of my model. I noticed that there are multiple gls models in R. I am wondering if anyone has experience in choosing between gls models. For example, how should one decide whether to use lm.gls in MASS, or gls in nlme for correcting ar(1)? Does anyone have a preference? Any advice is appreciated! Thanks, -- Tom [[alternative HTML

I have a 250 row by 20,000 column dataframe called temp and I do rowaverage<-function(x) rowmeans(temp[x],na.rm=TRUE ) averages<-tapply(seq(temp),names(temp),rowaverage) averages<-do.call('cbind',averages) , is it okay that it's been running for 4 hours or does this mean that something went wrong. I am on windows XP and i did ctrl alt delete and it seems like the process is

Dear R-friends, How do you test the goodness of prediction of a model, when you predict on a set of data DIFFERENT from the training set? I explain myself: you train your model M (e.g. glm,gam,regression tree, brt) on a set of data A with a response variable Y. You then predict the value of that same response variable Y on a different set of data B (e.g. predict.glm, predict.gam and so on).

Dear R-Users, as I will start a huge simulation in a few weeks, I am about to buy a new and fast PC. I have noticed, that the RAM has been the limiting factor in many of my calculations up to now (I had 2 GB in my "old" system, but Windows still used quite a lot of virtual memory), hence my new computer will have 4 GB of fast DDR2-800 RAM. However, I know that 1.) Windows 32 bit cannot

Hi: I need to create many variables at one time,how to do this in R? for eg ,X1,X2.......X100? Thanks~ [[alternative HTML version deleted]]

Hi there, I want to make trajectory plots for data as follows: ID time y 1 1 1.4 1 2 2.0 1 3 2.5 2 1.5 2.3 2 4 4.5 2 5.5 1.6 2 6 2.0 ... That is, I will plot a growth curve for each subject ID, with y in the y axis, and time in the x axis. I would like to have all growth curves in the same plot. Is there

Dear R-users, I'm currently using the multcomp package to produce plots of means with 95% confidence intervals i.e. mult<-glht(lm(response~treatment, data=statdata), linfct=mcp(treatment="Means")) plot(confint(mult,calpha = sig)) Unfortunately the y-axis on the plot appears to be fixed and hence if the labels on the y-axis (treatment levels) are too long, then they are not

Hi, Can any one please explain why the following code doesn't work? Or can anyone suggest an alternative. Suppose       x<-c(23,67,2,87,9,63,8,2,35,6,91,41,22,3)        mat<-0;        for(j in 1:length(x))        {              for(i in 1:p)                      mat[i,j]<-x[j]^i;        }    Actually I want to have a matrix with p columns such that each column will have the

R 2.8.1 Windows XP I am trying to analyze repeated measures data (the data are listed at the end of this Email message) and I need help to make sure that I have properly specified my model, and would like to know why lmer does not return a p value for Group, my fixed effect. My subjects are divided into two groups (variable GROUP), individual subjects are indicated by the variable SS, Value is

I hope that Marc doesn't mind, but I felt that part of his recent post was important enough to deserve it's own subject line rather then being lost in a 60-msg-long thread... On Sun, Jan 11, 2009 at 10:08 AM, Marc Schwartz <marc_schwartz at comcast.net> wrote: ... I strongly believe that the comments regarding R and the FDA are overly negative and pessimistic. The hurdles to

Dear All, I am currently using R in Windows PC with a 2 GB of RAM. Some pretty large datasets are expected soon, perhaps in an order of several GB. I am facing a similar situation like Ralph, either to get a new PC with a bigger RAM or else. I am just wondering if R is getting faster in other systems like UNIX or Linux. Any suggestions are appreciated. Regards, Jin

Greetings to everybody! Is there any way to turn off roaming profiles and use only local ones? In our company each of us connects to domain from its own workstation, so as I can see there's no need in roaming profiles. Why I'm asking such weird question? Because with roaming profiles Windows clients has readonly profiles! With Policy Editor I made HKEY_Local_Machine writeable,

Hello, Our university has a study in progress looking at using SAMBA to provide file/print sharing as an enterprise-wide solution. Does anyone know of an entity that uses SAMBA to support up to or more than 10 site locations, over 125 buildings, and supporting over 5000 workstations? -- Regards, /~\ The ASCII Richard Jackson \ / Ribbon Campaign Computer Systems Engineer,

Hello useRs, I have a problem at hand which I'd think is fairly common amongst groups were R is being adopted for Analytics in place of SAS. Users would like to obtain results for logistic regression in R that they have become accustomed to in SAS. Towards this end, I was able to propose the Design package in R which contains many functions to extract the various metrics that SAS reports.

Sender: r-help-bounces at r-project.org On-Behalf-Of: kingsfordjones at gmail.com Subject: Re: [R] Calculating confidence limits for the difference between means Message-Id: <2ad0cc110810231137n66760e43i61bdd0c89622d040 at mail.gmail.com> Recipient: ngottlieb at marinercapital.com -------------------------------------------------------- This information is being sent at the

Hello, I'm running samba 2.2 on FreeBSD 4.4. I was wondering if there was a way to sync up the samba and FreeBSD user passwords so that when either via the unix passwd or samba's smbpasswd program a user changes a password it is changed through both systems? If anyone is dong this successfully please let me know. Thanks. Dave.