search for: chetti

Hi, I have set up two monitors. I am using windows XP. I would like to keep one window- command line in one monitor and the script and graphs in the second monitor. How do I set it up? It works for word documents simply by dragging the document. It does not work if I drag and drop the scripts window. Is R not compatible for this? Thanks. Chetty -- Professor of Family Medicine Boston University

Hi, When I import an excel "CSV" file, large numbers such as " 43988014.3" is imported as "43988014", leaving out the decimal ".4". How to import keeping the fraction? Thanks. Chetty -- Professor of Family Medicine Boston University Tel: 617-414-6221, Fax:617-414-3345 emails: chettyvk@gmail.com,vchetty@bu.edu [[alternative HTML version deleted]]

Hi, This happens when I read in large numbers; ------------------------------------ > as.numeric(4398801.3) [1] 4398801 > as.numeric(439880.3) [1] 439880.3 ------------------------------------ Please help to read in numbers with more than 8 characters! Thanks. Chetty -- Professor of Family Medicine Boston University Tel: 617-414-6221, Fax:617-414-3345 emails:

Hi, I have dates as follows: 1/4/2006 0:00:00 AM It is a factor at present. How do I find out the day of the week from this? How do I convert to Julian date format? Thanks. Chetty -- Professor of Family Medicine Boston University Tel: 617-414-6221, Fax:617-414-3345 emails: chettyvk@gmail.com,vchetty@bu.edu [[alternative HTML version deleted]]

HI, I have to work with data objects. I have trouble. I would like to convert date to a integer of Julian dates omitting hours, minutes etc. I tried as. Date and also as.POSIXlt, ct etc. Please help me to compute the following difference. I get an "NA" for output. 1/14/2006 0:00:00 AM -1/9/2006 0:00:00 AM Thanks. Chetty -- Professor of Family Medicine Boston University Tel:

Hi , Name rate HEALTHALLIANCE HOSPITALS, INC -1.06211747 MOUNT AUBURN HOSPITAL 0.50960291 STURDY MEMORIAL HOSPITAL 2.64233232 LAWRENCE GENERAL HOSPITAL 2.15628558 CAMBRIDGE HEALTH ALLIANCE 1.23623144 I would like use

Hi ,When I try to load the 'mgcv" package, often, but not always, get this error message. What am I doing wrong? __________________ This is mgcv 1.4-1.1 Error in runif(1) : .Random.seed is not an integer vector but of type 'list' Error : .onAttach failed in 'attachNamespace' Error: package/namespace load failed for 'mgcv' -----------------------------------------

Hi, Please help to correct my error in the following. I want to plot the values of 'x" in increasing order. ----------------------------------- library(lattice) Name<-c("A","B","C") x<-c(15,20,10) test<-data.frame(Name,x) dotplot(Name~x,test) dotplot(reorder(Name,x)~x,test) "reorder" has no effect! Thanks. Chetty ------------------------

Hi,I would like to reshape the following "wide" data set to "long" form. I would appreciate help with the correct code for "reshape". I tried a few unsuccessfully. Thanks. Chetty __________________________________________________ dat.1 Grp X0 X3 X6 X12 X25 X501 C 0.5326517 0.6930942 0.9403883 1.157571

Hi,In SPlus, I use the function 'cluster' with GLM to adjust for correlated errors within a cluster ( e.g. cluster(ID)) as a covariate. Is there a similar function in R to use with GLM ? I am new to R. Thanks. V.K. Chetty -- Professor of Family Medicine Boston University Tel: 617-414-6221, Fax:617-414-3345 emails: chettyvk@gmail.com,vchetty@bu.edu [[alternative HTML version deleted]]

I would appreciate any help for the following question. How to increase the font size of labels for the x and y axes in the following code? --------------------------------- xyplot(lbxglu~lbxgh|eth,reg.dat.5, panel = p, col = 1:2, par.strip.text = list(cex = 1.25,col="brown"), xlab="A1C",ylab="Fasting Plasma Glucose", main="FPG") p <- function(..., col)

Hi,I would like to fill the dots in this graph. I would appreciate help to do that if possible. If fill is not possible, can I make it bright? I do NOT want to increase the size. __________________ dotplot(hu.event~fitted.adj.cat,data=risk.benefit.cast,groups=treat, auto.key=list(space="right")) ------------------------------------------ Thanks. Chetty -- Professor of Family Medicine

Hi , I have created a parallel coordinate plot using rrgobi. I like to make a powerpoint slide. I am not able to copy and paste. Is there any way to do this? Thanks for any help. Chetty -- Professor of Family Medicine Boston University Tel: 617-414-6221, Fax:617-414-3345 emails: chettyvk@gmail.com,vchetty@bu.edu [[alternative HTML version deleted]]

Hi,Can I use "reorder" function with barchart as in dotchart? Here are some codes which do not work for me. Thanks Chetty ___________________________ a1c.cast$bmi.cat.reordered[a1c.cast$eth!="Other"] <-with(a1c.cast[a1c.cast$eth!="Other",],reorder(bmi.cat.ordered[a1c.cast$eth!="Other"], BP.FN.RATE,median )) barchart(BP.FN.RATE~

Hi,I am using the amazing package 'plyr". I have one problem. I would appreciate help to fix the following error: Thanks. ______________________________ > library(plyr) > data(baseball) > summarise(baseball, + duration = max(year) - min(year), + nteams = length(unique(team))) Error: could not find function "summarise" > ddply(baseball, "id", summarise, +

Hi,I would like add a horizontal line at 126 (col=red) and a vertical line at 6.5 ( col= blue) in each panel .How should I use the panel.abline function in the following code I am using: ------------------ library(lattice) with(reg.dat.5,coplot(lbxglu~lbxgh|eth,panel=panel.smooth,xlab="ABC", ylab="FBG")) ---------------------------------------- Thanks a lot. Professor of

Hi,In Lattice graphs, can I use "reorder" function in a barchart as in the case of "dotchart"? Or it can be used only with dotcharts? Thanks Chetty Professor of Family Medicine Boston University Tel: 617-414-6221, Fax:617-414-3345 emails: chettyvk@gmail.com,vchetty@bu.edu [[alternative HTML version deleted]]

Dear sir,    How to do bilinear time series in R?Is there any functions or packages?  thank you! -----Sincerely yours Kuangnan Fang 方匡南 敬上 department of statistics ,Economics school,Xia men University. Fujian Province (361005) China Mobile Phone：15860721915 SKYPE: ruiqwy MSN Messenger: ruiqwy@hotmail.com QQ:39863401 --- 09年3月31日，周二, r-help-request@r-project.org