Re: [R] Help : glm p-values for a factor predictor

ter_Sequoia) --> The predictors between quotes (excepted y) are qualitative ; others are groups of continuous predictors Var_model<-paste0("y ~ ", paste(champ_model_cont[-1],collapse=" + ")) Logit_appr<-glm(formula=Var_model,family=binomial(link="logit"),data=pop

[R] Help : glm p-values for a factor predictor

Hello, i am a newby on R and i am trying to make a backward selection on a binomial-logit glm on a large dataset (69000 lines for 145 predictors). After 3 days working, the stepAIC function did not terminate. I do not know if that is normal but i would like to try computing a "homemade" back

Re: [R] For loop with ifelse help

Hi Sayan, This is exactly what I was looking for - it worked perfectly. Many thanks!! Also, thanks to everyone else for their suggestions. Pele -- View this message in context: http://r.789695.n4.nabble.com/For-loop-with-ifelse-help-tp2550547p2552388.html Sent from the R help mailing list

Re: [R] For loop with ifelse help

Hi David - thanks for your suggestion, but I am trying to avoid doing any merging and sorting for this step because the real file I will be working with has about 20 million records. If I can get this loop or something similar to work will be good enough. thanks again.. -- View this message

[R] For loop with ifelse help

Hello R users, I have 2 files (file1 and f2) and I am trying to sum columns 6:10 of a specific row in f2 and append it in file 1 if the "state" variable in file 1 equals the rowname in f2. Below is an example of the code I wrote using a for loop, but it not working (i.e it only works for the la

[R] Data decomposition

Hi R users, I have a time series variable that is only available at a monthly level for 1 years that I need to decompose to a weekly time series level - can anyone recommend a R function that I can use to decompose this series? eg. if month1 = 1200 I would to decompose so that the sum of the

Re: [R] Comparing data frames and keeping non-matches

data.frame(cbind(year, x1)) df2$subject <- c(1:11) df2$match <- 1 df2$key <- paste(df2$subject, df2$match, sep="") ; df2 nomatch <- subset(df2, is.element(df2[,"key"], df1[,"key"])==FALSE); nomatch rm(list=ls()) Pele wrote: > > Hi R users,

[R] Comparing data frames and keeping non-matches

Hi R users, I am trying to compare 2 data frames by subject and match and save the no matches to an object called nomatch, but I am getting unexpected results... Can anyone tell me how to correct the code to get the expected results shown in the last table? Many thanks in advance for your any h

Re: [R] Merge 10 data frames with 3 id columns that are common to all data frames

.23963 2 -0.064799 31 -0.85747 11 > 5e -1.24802 2 1.43072 2 0.183317 31 2.50352 11 > > > HTH, > > baptiste > > On 8 Mar 2009, at 23:40, Pele wrote: > >> >> I tried using merge_all as shown below but I am getting an error ... >> can >> a

Re: [R] Merge 10 data frames with 3 id columns that are common to all data frames

ou wish >> >> ( result <- merge_all(list(DF1, DF2, DF3) )) >> >> save( result, file ="merged.rda") > > I didn't know of this function, thanks. Similar solutions using base > functions were proposed recently on > http://wiki.r-project.org/rw

[R] Merge 10 data frames with 3 id columns that are common to all data frames

Hi R users, Can anyone share some example code using merge_all (from the reshape package) to merge 10 data frames into 1 file. Thanks in advance for any help! -- View this message in context: http://www.nabble.com/Merge-10-data-frames-with-3-id-columns-that-are-common-to-all-data-frames-tp2240

Re: [R] Week value function

> > Gives "00" for "01JAN2009" but you can adjust that behavior to your > specifications. You could also convert to numeric if desired: > > > nweek.dBY <- function(x) as.integer(format(strptime(x, "%d%B%Y") , > "%W")) > >

[R] Week value function

Hi R users, I am looking for a date function that will give the following: - The number-of-week value is in the range 01-53 - Weeks begin on a Monday and week 1 of the year is the week that includes both January 4th and the first Thursday of the year. If the fi

Re: [R] Date conversion

Hi Uwe, You are correct - that was a type O (52) and thanks for you your suggestion that works.. Pele wrote: > > > > Hi R users, > > I have a factor variable called date as shown below: Can anyone share the > best / most efficient way to extract year and week (e.g.

[R] Date conversion

Hi R users, I have a factor variable called date as shown below: Can anyone share the best / most efficient way to extract year and week (e.g. year = 2006, week = 52 for first record, etc..)? My data set has 1 million records. DATE 11DEC2006 11SEP2006 01APR2007 02DEC2007 Thanks in

Re: [R] output formatting

gt; : B > [1] 259 > ------ > : H > : B > [1] 169 > > > hth, > Kingsford Jones > > On Wed, Mar 4, 2009 at 8:17 PM, Pele wrote: >> >> Hi R users, >> >> I have an R object wit

[R] output formatting

Hi R users, I have an R object with the following attributes: > str(sales.bykey1) 'by' int [1:3, 1:2, 1:52] 268 79 118 359 87 147 453 130 81 483 ... - attr(*, "dimnames")=List of 3 ..$ GROUP: chr [1:3] "III" "II" "I" ..$ year : chr [1:2] "2006" "2007" ..$ week : chr [

Re: [R] Formatting numeric values in a data frame

44 > 5 e1 0.48 0.00 9.44 > 6 f2 0.48 0.00 9.44 > 7 g6 0.33 0.00 9.44 > 8 h8 0.33 0.00 9.44 > 9 i2 0.33 0.00 9.44 > 10 k2 0.33 0.00 9.44 >> > > > On Wed, Feb 25, 2009 at 4:19 PM, Pele wrote: >> >> Hi R users, >> >> I have a data fr

[R] Formatting numeric values in a data frame

Hi R users, I have a data frame that contains 10K obs and 200 variables where I am trying to format the numeric columns to look like the output table below (format to 2 decimal places) but I am having no luck.. Can someone tell me the best way to accomplist this? Thanks in advance for any he

Re: [R] Formula that includes previous row values

t; Gregory (Greg) L. Snow Ph.D. > Statistical Data Center > Intermountain Healthcare > greg.s...@imail.org > 801.408.8111 > > >> -Original Message- >> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- >> project.org] On Behalf Of Pele >> Sent: Mond

Re: [R] Formula that includes previous row values

Hi Jorge - many thanks for you suggestion, but I am looking for a way where I don't have to use a loop. I meant to include that in my description. Thanks again! Jorge Ivan Velez wrote: > > Dear Pele, > Probably not the best way to proceed but it works: > > X<-read.t

[R] Formula that includes previous row values

Hi R users, Is there an easy way in R to generate the results table below using table 1 and the formula (simplified version of the real problem)? It would be easy if I knew the R equivalent of SAS's retain function, but could not find one. Thanks in Advance for any help! table1: ID X2

Re: [R] Whitening Time Series

Hi Bob - your suggesting worked out great... Many thanks! Also, thanks everyone for the other suggestions! Bob McCall wrote: > > Look in the package "forecast" for the function "Arima". It will do what > you want. It's different than arima function in

[R] Whitening Time Series

Hi R users, I am doing cross correlation analysis on 2 time series (call them y-series and x-series) where I need the use the model developed on the x-series to prewhiten the yseries.. Can someone point me to a function/filter in R that would allow me to do that? Thanks in advance for any hel

Re: [R] Outlier Detection for timeseries

Hi Hans - I tried your suggestion and it worked out well... Many thanks!! Also, thank to everyone else for their suggestions. Hans W. Borchers-4 wrote: > > Pele yahoo.com> writes: > >> >> >> Hello R users, >> >> Can someone tell if there is a

Re: [R] Outlier Detection for timeseries

, Level Shifts, or Temporary Changes... The output in the original not is what SAS produces and I was looking for something similar.. R is very new to me (4 weeks) hence still feeling my way around... Many thanks! Pele wrote: > > Hello R users, > > Can someone tell if there is a packa

[R] Outlier Detection for timeseries

Hello R users, Can someone tell if there is a package in R that can do outlier detection that give outputs simiilar to what I got from SAS below. Many thanks in advance for any help! Outlier Details

Re: [R] Output results to a single postscript document

Hello R users, Below is the code and output of what I am trying to do. My goal is to insert/print all items in the chart function into a pdf document. Only the acf and pacf charts gets printed. Again, thanks in advance for any help I can get! options (scipe

[R] Output results to a single postscript document

Hello R users, I have been trying to output all my results (text, plots, etc) into the same postscript file as one document, but have been unable to...Can anyone help me improve my code below so that I can accomplish this? Currently I have to output them separately then piece them back toget

[R] Printing all output (text ans plots) to the same postscript document

Hello R users, I have been trying to output all my results (text, plots, etc) into the same postscript file as one document, but have been unable to...Can anyone help me improve my simplified version of the code below so that I can accomplish this? Currently I have to output them separately th

[R] How to show variables used in lm function call?

Hello R users, I am new to R and am wondering if anyone can help me out with the following issue: I wrote a function to build ts models using different inputs, but when R displays the call for a model, I cannot tell which variables it is using because it shows the arguments instead of the real