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782 discussions - 2,623 posts

  • Hi there, I need to run a Tobit Fixed Effects in a panel data with 4500 units for 8 years. It is a huge data set, my dependent variable is left truncated at zero, the distribution is skewed and my ...
    Felipe NunesFelipe Nunes
    Sep 15, 2011 at 5:12 am
    Mar 9, 2013 at 10:07 pm
  • I read in ?na.omit that it returns the object with incomplete cases removed. I interpret this to mean that any zoo object row where any column shows 'NA' will be removed from the data set. That's not ...
    Rich ShepardRich Shepard
    Sep 19, 2011 at 4:48 pm
    Sep 20, 2011 at 4:38 am
  • Hello, I appreciate this is likely to be an easy question. I am trying to obtain the residuals from a linear regression where the line is forced to have a 1:1 relationship. An example of the data ...
    RCullochRCulloch
    Sep 13, 2011 at 11:03 am
    Sep 15, 2011 at 1:33 pm
  • Hello all, I have a problem estimating Random Effects model using censReg function. small part of code: UpC <- censReg(Power ~ Windspeed, left = -Inf, right = 2000,data=PData_In,method="BHHH",nGHQ = ...
    IgorsIgors
    Sep 5, 2011 at 9:58 pm
    Sep 25, 2011 at 3:51 am
  • Hi, I am wondering if anyone can suggest how to test the equality of 2 proportions. The caveat here is that the 2 proportions were calculated from the same number of samples using 2 different tests ...
    Array chipArray chip
    Sep 7, 2011 at 8:11 am
    Sep 12, 2011 at 5:06 pm
  • What R packages are available for performing classification tasks? That is, when the predictor has done its job on the dataset (based on the training set and a range of variables), feedback about the ...
    JayJay
    Sep 11, 2011 at 3:42 pm
    Oct 2, 2011 at 6:16 pm
  • Hi all, is there any alternative to the function integrate? Any comments are welcome. Thanks in advance.
    . .. .
    Sep 1, 2011 at 1:42 pm
    Sep 19, 2011 at 11:16 pm
  • This is has been bugging me for a long time. Nobody around me seems to have this problem. I hope someone on the forum could help me. When I generate a R graph and want to bring the image into Word. I ...
    Bby2103Bby2103
    Sep 18, 2011 at 7:38 pm
    Sep 19, 2011 at 12:19 am
  • People, It appears that there is no way of getting Boxplots to plot using Mean, SD, Max & Min - is there something else that would do what I want? I couldn't find it . . Thanks, Phil. -- Philip ...
    Philip RhoadesPhilip Rhoades
    Sep 26, 2011 at 1:56 pm
    Sep 27, 2011 at 5:13 am
  • Hello everybody I am trying to process audio files in R and had some problems with files size. I?m using R packages 'audio' and 'sound'. I?m trying a really simple thing and it is working well with ...
    Ulisses.CamargoUlisses.Camargo
    Sep 21, 2011 at 7:43 pm
    Sep 22, 2011 at 11:29 pm
  • HI, Dear R community, I am trying to created new variables and put into a data frame through a loop. My original data set: head(first) probe_name chr_id position array1 1 C-7SARK 1 849467 10 2 ...
    Changbin DuChangbin Du
    Sep 22, 2011 at 5:07 pm
    Sep 22, 2011 at 10:25 pm
  • Dear all; A very basic question. I have the following data: ************************************************************************************ A <- ...
    Pedro MardonesPedro Mardones
    Sep 20, 2011 at 5:46 pm
    Sep 22, 2011 at 1:21 pm
  • Hi, x <- 0.2*5 is.integer(x) gives me FALSE because R stores it as a float number, right? Is there an elegant way to work around that problem? Right now I'm using x <- 0.2*5 round(x) == x which ...
    Alexander EngelhardtAlexander Engelhardt
    Sep 8, 2011 at 6:27 pm
    Sep 9, 2011 at 3:10 pm
  • I understand this isn't a r specific question. I'm switching departments to work with the analytics team at my company as a "service" side manager to better incorporate the analytics process into ...
    KensuguroKensuguro
    Sep 8, 2011 at 4:49 pm
    Oct 10, 2011 at 5:19 am
  • Hello useRs, I am trying to put my funcs in a package to avoid clutter in my workspace as the funcs are now in .Rprofile. All plain R code no compilations. Using win XP with a full cygwin install and ...
    Bond, StephenBond, Stephen
    Sep 15, 2011 at 3:32 pm
    Oct 6, 2011 at 1:46 pm
  • I don't understand how this function can subset by i when i is missing.... ## My function: myfun = function(vec, i){ ret = vec[i] ret } ## My data: i = 10 vec = 1:100 ## Expected input and behavior ...
    Gene LeynesGene Leynes
    Sep 26, 2011 at 7:39 pm
    Sep 30, 2011 at 9:28 pm
  • Hi, I wanted to write the data created using R on existing csv file. However everytime I use write.csv, it overwrites the values already there in the existing csv file. Any workaround on this. Thanks ...
    Ashish KumarAshish Kumar
    Sep 21, 2011 at 12:01 pm
    Sep 22, 2011 at 4:56 am
  • Dear R Users, I know issues like this have come up in the past. I am wondering how many people would be interested in an online mechanism for donating to the R Foundation or for becoming supporting ...
    Joshua WileyJoshua Wiley
    Sep 24, 2011 at 3:43 pm
    Sep 30, 2011 at 12:20 pm
  • Hi, I'm looking for some guidance on whether to use S4 or Reference Classes for an analysis application I'm developing. I'm a C++/Python developer, and like to 'think' in OOD. I started my app with ...
    Joseph ParkJoseph Park
    Sep 13, 2011 at 5:54 pm
    Sep 15, 2011 at 1:57 pm
  • Hi R experts, I'm looking for some help with plotting vectors from envfit in vegan, onto a 3d plot using ordiplot3d. So far I have data.mds <- metaMDS(data, k=3,trace = FALSE) ...
    BrionyBriony
    Sep 9, 2011 at 2:49 am
    Sep 14, 2011 at 12:38 pm
  • Hello all, I am looking for an editor for R which has got functions beyond the normal R editor that is included in the program. I had a look at VIM but I think it's difficult if you are just starting ...
    Marion WentyMarion Wenty
    Sep 20, 2011 at 1:26 pm
    Oct 3, 2011 at 9:21 am
  • hello all, this is my reproducible example data frame test<-structure(list(date = structure(c(1262300400, 1262304000, 1262304000, 1262307600, 1262307600, 1262311200, 1262311200, 1262314800, ...
    MaxbreMaxbre
    Sep 29, 2011 at 2:10 pm
    Sep 30, 2011 at 2:14 pm
  • Hello, I am having some trouble coding a two-way anova due to replicated treatments. I have a factorial design with three male parents and three female parents. They were mated in all combinations ...
    Austin PaulAustin Paul
    Sep 27, 2011 at 12:43 am
    Sep 27, 2011 at 9:23 am
  • This has got to be incredibly simple but I nevertheless can't figure it out as I am apparently brain dead. I just want to convert the elements of a character vector to variable names, so as to then ...
    Jim BouldinJim Bouldin
    Sep 23, 2011 at 5:03 pm
    Sep 23, 2011 at 6:13 pm
  • Hi guys, My code (next 2 lines below) isn't doing what I'm expecting it to: tmp <- ifelse(uncurated$days_to_tumor_recurrence=="null","norecurrence","recurrence") curated$recurrence_status <- tmp I ...
    Ben GanzfriedBen Ganzfried
    Sep 16, 2011 at 2:36 pm
    Sep 16, 2011 at 11:53 pm
  • The code looks like this: L1=list(a=1,b=2,c=3) f1=as.factor(c) L1[[f1]] returns 1 What happens if we give a factor as an index at a list?
    Varsha AgrawalVarsha Agrawal
    Sep 7, 2011 at 10:04 am
    Sep 15, 2011 at 6:09 pm
  • I was trying to open up the workspace that you help me write last night, but for some reasons, when I tried to load the saved file R reads "load("C:\\Users\\Documents\\Statistical Learning\\HW1 #3 ...
    TttcomraderTttcomrader
    Sep 14, 2011 at 1:06 pm
    Sep 14, 2011 at 3:51 pm
  • Is there any way to search the console during an interactive session? I've looked and looked, and can not find one. In some add-on package, maybe? Sorry to be so basic, but help would be greatly ...
    andrewHandrewH
    Sep 8, 2011 at 5:03 am
    Sep 8, 2011 at 9:55 pm
  • Is it possible to change the color/thickness of the summary line in an interaction.plot without changing the other individual data lines? I would like to make the line from the summary function ...
    DadrivrDadrivr
    Sep 3, 2011 at 11:53 pm
    Sep 8, 2011 at 12:04 am
  • Dear All, I am running a simulation to obtain coverage probability of Wald type confidence intervals for my parameter d in a function of two parameters (mu,d). I am optimizing it using "optim" method ...
    TzaihraTzaihra
    Sep 2, 2011 at 7:33 pm
    Sep 7, 2011 at 6:30 pm
  • Hello, I've been using jpeg(), bmp() and pdf() to capture plots. I've used the parameter "at" in a plot, to define the tickmarks. It works fine on screen, but when I try to print it to a file, it ...
    Eran EidingerEran Eidinger
    Sep 5, 2011 at 3:09 pm
    Sep 6, 2011 at 3:56 pm
  • Hey guys, I tried to program quicksort like this but somethings wrong. please help thx -- View this message in context ...
    WarcWarc
    Sep 4, 2011 at 1:51 am
    Sep 5, 2011 at 6:28 pm
  • Hello, I need to convert dataframe from: ID T0 T1 T2 A 1 2 3 B 4 5 6 C 7 8 9 to: ID Variable Value A T0 1 A T1 2 A T2 3 B T0 4 B T1 5 B T2 6 C T0 7 C T1 8 C T2 9 i tried to use melt cast but it gives ...
    Eugene KanshinEugene Kanshin
    Sep 22, 2011 at 1:54 pm
    Oct 5, 2011 at 8:11 am
  • hello: my data looks like: time1 time2 event catagoria 2004 2006 1 C 2004 2005 0 C 2005 2010 1 E 2007 2009 1 C 2006 2007 0 E 2008 2010 0 C 2008 2010 1 E ... and the census interval is 1 year I have ...
    Ruth AriasRuth Arias
    Sep 26, 2011 at 8:30 pm
    Sep 28, 2011 at 9:41 pm
  • Dear R-help, I have a problem plotting maps using the raster package when I use R on my workplace server, but not when I use my own desktop. I suspect the server version must be missing something and ...
    Alex OlssenAlex Olssen
    Sep 21, 2011 at 9:45 pm
    Sep 22, 2011 at 2:09 am
  • Greegings! Any idea why this works from the command line, but not from a source file? This is driving me (more) insane. regexp <- "[Aa]ccountability" Thanks! -- Henri-Paul Indiogine Curriculum & ...
    Henri-Paul IndiogineHenri-Paul Indiogine
    Sep 20, 2011 at 10:19 pm
    Sep 20, 2011 at 11:36 pm
  • hello, i am familiar with the paste command with which i can paste for exaple: object <- "Hello" paste(object,"World") now i would like to be able to paste all the elements of the same vector ...
    Marion WentyMarion Wenty
    Sep 19, 2011 at 1:58 pm
    Sep 20, 2011 at 1:13 pm
  • Dear Folks-- I'm trying to make a function that takes the columns I select from a data frame and then uses a for loop to print some information about each one, starting with the column name. I ...
    andrewHandrewH
    Sep 16, 2011 at 12:49 am
    Sep 18, 2011 at 7:21 pm
  • Hello, I have a time-series that has some missing samples. I was thinking on completing them using either zero-order hold or linear interpolation. I am looking for an efiicient way (other than a ...
    Eran EidingerEran Eidinger
    Sep 12, 2011 at 8:42 am
    Sep 18, 2011 at 10:01 am
  • Dear R cognoscenti, While having NA as a native type is nifty, it is annoying when making binary choices. Question: Is there anything bad about writing comparison functions that behavior like %in% ...
    Timothy BatesTimothy Bates
    Sep 13, 2011 at 4:42 pm
    Sep 15, 2011 at 3:19 pm
  • Dear all, When trying to multiply the same matrices repeatedly I get different results some of the times. It is not systematic, which is the fact that is giving me more trouble to try to isolate the ...
    Xavier Fernández i MarínXavier Fernández i Marín
    Sep 13, 2011 at 7:34 am
    Sep 13, 2011 at 1:32 pm
  • Hi guys, one of the questions where you need a real human instead of a search engine, so it would be great if you could help. I have a matrix of z-scores which I would like to filter, sometimes ...
    NetzwerkerinNetzwerkerin
    Sep 6, 2011 at 2:10 pm
    Sep 7, 2011 at 7:00 am
  • Hello, I need to calculate a moving average and an exponentially weighted moving average over a fairly large data set (500K rows). Doing this in a for loop works nicely, but is slow. ewma <- ...
    Noah SilvermanNoah Silverman
    Sep 2, 2011 at 4:43 pm
    Sep 2, 2011 at 6:37 pm
  • Posting for a friend Begin forwarded message: From: "Geier, Florian" <<span class="m_body_email_addr" title="cb70778d7a1955248bdb797e7cfa8359" florian.geier08@imperial.ac.uk</span Subject: Fwd ...
    Benton, PaulBenton, Paul
    Sep 1, 2011 at 3:13 pm
    Sep 1, 2011 at 5:36 pm
  • Dear all, I have a vector with number that some of them are part of the seq(1,800,4). How can I check which of the numbers belong to the seq(1,800,4) LEt's say that is called myvector the vector with ...
    AlaiosAlaios
    Sep 30, 2011 at 4:25 pm
    Oct 2, 2011 at 7:28 pm
  • Hello, I am very new to R (as my Subject probably indicates). I want to do something that should, I think, be very simple. I have five vectors in a list and I want to construct a covariance matrix ...
    Sf1979Sf1979
    Sep 30, 2011 at 11:00 am
    Oct 1, 2011 at 3:32 pm
  • Hi group, This is how my test file looks like: Chr start end sample1 sample2 chr2 9896633 9896683 0 0 chr2 9896639 9896690 0 0 chr2 14314039 14314098 0 -0.35 chr2 14404467 14404502 0 -0.35 chr2 ...
    SujithaSujitha
    Sep 26, 2011 at 2:30 pm
    Sep 29, 2011 at 4:23 pm
  • Hello, I have a dataset with proportions that vary around a fixed mean, is it possible to use betareg to look at variance in the dispersion parameter while keeping the mean fixed? I am very new to R ...
    Betty_dBetty_d
    Sep 1, 2011 at 11:28 am
    Sep 29, 2011 at 10:40 am
  • Hello R helpers, I'm trying to use Mahalanobis distance to calculate distance of two time series, to make some comparations with euclidean distance, DTW, etc, but I'm having some dificults. I have, ...
    jorgeAjorgeA
    Sep 26, 2011 at 7:05 pm
    Sep 27, 2011 at 9:09 pm
  • Is it possible to import only certain variables from a SPSS file. I know that read.spss in the foreign library will bring the data into R but can I choose to important only chosen variables from the ...
    SassoraukSassorauk
    Sep 25, 2011 at 9:56 pm
    Sep 27, 2011 at 7:44 pm
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