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243 discussions - 875 posts

  • Dear expeRts, ????? I have?some programming questions about NULL in R.There are listed as follows: 1. I find i can't let a list have a element NULL: a<-list() a$ress<-1 a$res<-NULL a str(a) How can i ...
    PO SUPO SU
    Sep 10, 2014 at 7:21 am
    Sep 11, 2014 at 3:27 pm
  • Dear Sir/Madam, I am trying to use calculation for two-tailed inverse of the student`s t-distribution function presented by Excel functions like =TINV(probability, deg_freedom). For instance: The ...
    AndreAndre
    Sep 30, 2014 at 5:31 pm
    Oct 2, 2014 at 3:22 pm
  • Hi, I have streaming data(1 TB) that can't fit in memory. Is there a way for me to find the median of these streaming integers assuming I can fit only a small part in memory ? This is about the ...
    Mohan RadhakrishnanMohan Radhakrishnan
    Sep 24, 2014 at 5:31 am
    Sep 30, 2014 at 7:57 am
  • Dear expeRts, ?? I find it's terrible? when? i want to comment multi paragraph (e.g.? a 30 lines function) , i have to comment each line with #,? is there any good way to do that ? ?? I investgate ...
    PO SUPO SU
    Sep 9, 2014 at 2:49 am
    Sep 10, 2014 at 6:30 am
  • Dear expeRts, ? ? When i using the following code, i get a error as follows: ?edit(file=vignette("grobs",package = "grid")) Error in edit.vignette(file = vignette("grobs", package = "grid")) :? ? ...
    PO SUPO SU
    Sep 7, 2014 at 9:06 am
    Sep 9, 2014 at 3:48 pm
  • Hi there, With the following code, plot(1:5, xaxt = "n") axis(1, at = 1:5, labels = c(expression(E[g]), "E", expression(E[j]), "E", expression(E[t]))) you may notice that the "E" within labels of ...
    Jinsong ZhaoJinsong Zhao
    Sep 1, 2014 at 11:40 pm
    Sep 6, 2014 at 12:04 am
  • Not sure if this is the proper list to propose changes like this, if it passes constructive criticism, it would like to have a %between% operator in the R language. I currently have this in my local ...
    Torbjørn LindahlTorbjørn Lindahl
    Sep 4, 2014 at 2:41 pm
    Sep 5, 2014 at 2:14 pm
  • Howdy, I have searched the lists and can not seem to find a solution to my problem. I need to be able to dynamically modify a string inside a function to build a new function. "sub" replaces with a ...
    Daniel FukaDaniel Fuka
    Sep 22, 2014 at 1:16 pm
    Sep 23, 2014 at 4:24 am
  • Hi. Say I have a model like y = a + B1*x1 + B2*x2 + B3*x3 + B4*x4 + e and I want to test H0: B2/B1 = 0 or H0: B2/B1´/B3 (whatever H1). How can I proceed? I now about car::linearHypothesis, but I ...
    ChrisChris
    Sep 6, 2014 at 2:17 am
    Sep 13, 2014 at 3:11 pm
  • Subscribers, Could someone please indicate correct terminology and relevant manual sections to achieve the following conceptual workflow, to create a script to select sequentially parts of a ...
    RlRl
    Sep 5, 2014 at 9:40 am
    Sep 11, 2014 at 10:46 am
  • The data vector, art, given below using dput(), gives a set of discrete numeric values for 915 observations, in the range of 0:19. I want to make some plots of the frequency distribution, but the ...
    Michael FriendlyMichael Friendly
    Sep 2, 2014 at 5:29 pm
    Sep 3, 2014 at 12:52 pm
  • Dear fellow R users, I am trying to run the random forest and Yaimpute packages in R to impute a grid to project in a gis. However, after running the imputation I keep getting an error in the ...
    Chris Jackson-JordanChris Jackson-Jordan
    Sep 19, 2014 at 2:10 pm
    Sep 29, 2014 at 1:22 pm
  • Hi. I have a requirement to plot a series of points on a map of Canada along with boundaries defining search and rescue (SAR) regions. I have been successful in plotting the map of Canada (Lambert ...
    Alain DubreuilAlain Dubreuil
    Sep 22, 2014 at 3:27 pm
    Sep 24, 2014 at 7:27 pm
  • Subscribers, apply block of if statements with menu function Subscribers, For a menu: menu(c('a','b','c','d')) How to create a function that will apply to specific menu choice objects? For example ...
    RlRl
    Sep 15, 2014 at 8:52 am
    Sep 22, 2014 at 9:27 am
  • Hi guys I'm having some troubles in installing the "topicmodels" package in my R system on a Linux Ubuntu machine. I also described the problem here: http://bit.ly/1m8Ah6Z I have just installed R ...
    Davide ChiccoDavide Chicco
    Sep 16, 2014 at 7:19 pm
    Sep 19, 2014 at 5:44 pm
  • Quick question: I am running the following code on some variables that are factors: dbpmn$IID1new <- ifelse(as.character(dbpmn[,2]) == as.character(dbpmn[,(21)]), dbpmn[,20], '') Instead of returning ...
    Kate IgnatiusKate Ignatius
    Sep 28, 2014 at 4:49 am
    Sep 28, 2014 at 5:24 pm
  • When a library is loaded messages such as these are displayed: The following object is masked from ?package:base?: norm The following object is masked from ?package:NADA?: cor What do I read to ...
    Rich ShepardRich Shepard
    Sep 24, 2014 at 6:22 pm
    Sep 25, 2014 at 4:37 pm
  • Dear Subscribers, I want to label a numeric variable 0="Bad" /1="Good". I understand the only way is to transform it into a factor variable. Is there a way to check that the numeric values of the new ...
    Angel RodriguezAngel Rodriguez
    Sep 19, 2014 at 10:53 am
    Sep 19, 2014 at 2:12 pm
  • Hello, I am trying to interface in my teaching some elementary probability with Monte Carlo ideas. In sampling from a finite population, the number of distinct samples of size 'k' from a population ...
    Giovanni PetrisGiovanni Petris
    Sep 17, 2014 at 6:25 pm
    Sep 17, 2014 at 11:24 pm
  • Hi I am a New user of R. Please, how to import data from Excel to R? Thanks, Best regards, Fredj, [[alternative HTML version deleted]]
    JAWADI FredjJAWADI Fredj
    Sep 9, 2014 at 8:48 pm
    Sep 10, 2014 at 3:10 pm
  • Hi. I'm taking the long-overdue step of moving from using online calculators to compute results for Mann-Whitney U tests to a more streamlined system involving R. However, I'm finding that R computes ...
    W Bradley KnoxW Bradley Knox
    Sep 3, 2014 at 12:54 am
    Sep 4, 2014 at 2:30 pm
  • Dear Subscribers, I've found this recommendation to paste an R table to Excel: HTML.matrix( summary(iris), file("clipboard", "w"), append=F ) # paste into Excel After installing R2HTML and writting ...
    Angel RodriguezAngel Rodriguez
    Sep 23, 2014 at 1:04 pm
    Sep 24, 2014 at 11:24 am
  • Hello! I am trying to figure out how to extract the model equation when using deriv3 with nls. Here is my example: # # Generate derivatives # Puro.fun2 <- deriv3(expr = ~(Vmax + VmaxT*state) * ...
    Riley, SteveRiley, Steve
    Sep 18, 2014 at 1:33 pm
    Sep 20, 2014 at 4:01 pm
  • Hi I would like to know how to use R in our commercial business application which we plan to host in cloud or deploy on customer's premise. 1. Using R and its package, does it enforce that my ...
    PasuPasu
    Sep 18, 2014 at 9:36 am
    Sep 19, 2014 at 7:32 pm
  • When R starts in GUI (e.g., /Applications/R.app/Contents/MacOS/R) on my Mac OS X 10.7.5, the startup configuration in .Rprofile works fine. However, when R starts on the terminal (e.g., ...
    Gang ChenGang Chen
    Sep 18, 2014 at 3:18 pm
    Sep 19, 2014 at 6:18 pm
  • Is there a way to get around R?s memory-bound limitation by interfacing with a Hadoop database or should I look at products like SAS or JMP to work with data that has hundreds of thousands of ...
    Barry KingBarry King
    Sep 16, 2014 at 11:40 am
    Sep 16, 2014 at 7:14 pm
  • Dear R and spatstat developers, Thanks so much for the time and effort that you invest into this awesome software. I have a problem simulating from a Point Process Model in spatstat. In summary, the ...
    Sebastian SchutteSebastian Schutte
    Sep 15, 2014 at 8:47 am
    Sep 16, 2014 at 10:22 am
  • Hi, Is there any package (or homegrown function) that can produce "Parliament Seats Graph"? I'm referring to the nice looking concentric half circles of colored "seats" as seen on Wikipedia (for ...
    Stefan PeterssonStefan Petersson
    Sep 8, 2014 at 8:22 pm
    Sep 12, 2014 at 1:35 pm
  • Dear subscribers, I have the following dataframe: child65$decedad logit 1 [65,67) 0.00000000 10 67 0.00000000 2 [68,70) -0.06669137 3 [70,72) -0.71294981 4 [72,74) -0.59783700 5 [74,77) -1.08334482 6 ...
    Angel RodriguezAngel Rodriguez
    Sep 12, 2014 at 8:32 am
    Sep 12, 2014 at 9:42 am
  • The goal: to create a function modeled after `subset` (notorious for its non-standard evaluation) that will take a series of logical tests as unqiuoted expressions to be evaluated in the framework of ...
    David WinsemiusDavid Winsemius
    Sep 6, 2014 at 10:31 pm
    Sep 10, 2014 at 4:06 pm
  • I'm a programmer at a high-performance computing center. I'm not very familiar with R, but I have used MPI from C, C++, and Python. I have to run an R code provided by a guy who knows R, but not ...
    Jim LeekJim Leek
    Sep 3, 2014 at 10:25 pm
    Sep 4, 2014 at 4:37 pm
  • I use the following command to write data to a .csv file: write.csv(yxz,file="foo.csv") And I get the following in the file, with one column appended to the file: "","fsp","fsec","cincome", ...
    Steven YenSteven Yen
    Sep 24, 2014 at 9:00 pm
    Sep 24, 2014 at 9:13 pm
  • Is there a way to over-write a procedure (subroutine)? I include a default procedure fixx in a list of procedures which are compiled into a package. By default, the procedure deliver the data matrix ...
    Steven YenSteven Yen
    Sep 2, 2014 at 6:45 pm
    Sep 24, 2014 at 2:19 pm
  • Dear R users, I have a data with month and year columns which are both characters and wanted to create a new column like Jan-1999 with the following code. The result is all NA for the month part ...
    Kuma RajKuma Raj
    Sep 23, 2014 at 3:41 pm
    Sep 23, 2014 at 6:38 pm
  • Dear All, I have a table of 4 columns and many millions rows separated by tab-delimited. I don't have enough memory to read.table in that 1 Gb file. And actually I have 12 text files like that. Is ...
    Stephen HK WongStephen HK Wong
    Sep 18, 2014 at 11:48 pm
    Sep 20, 2014 at 6:03 pm
  • Hello I have the two dataframes Df1 and Df2 which have the common variable AgeSexeCadNCad I would like to add the new variable Df2$Pourcent which correspond at the value of Df1$AgeSexeCadNCad. Thank ...
    Arnaud MichelArnaud Michel
    Sep 19, 2014 at 5:15 pm
    Sep 19, 2014 at 6:53 pm
  • Hi, I am running quantile regressions with replicates, but I don't know how to calculate the Pseudo R squared for quantile regression with replicates. I have used the following commands: rho <- ...
    Donia Smaali BouhlilaDonia Smaali Bouhlila
    Sep 17, 2014 at 6:13 pm
    Sep 19, 2014 at 7:42 am
  • Hi I am using both ncdf and ncdf4 libraries and with both I keep getting the same error: Error in R_nc_enddef: NetCDF: One or more variable sizes violate format constraints. Error in R_nc_sync ...
    Hernan A. Moreno RamirezHernan A. Moreno Ramirez
    Sep 15, 2014 at 11:20 pm
    Sep 16, 2014 at 9:08 pm
  • Dear R members I want to simulate data depending on SEM and when i applied the code below i found some errors and i still cannot run it. many thanks in advance Thanoon #Do simulation for 100 ...
    Thanoon younisThanoon younis
    Sep 14, 2014 at 1:56 pm
    Sep 15, 2014 at 6:48 am
  • Hi, I have two vector of margins. Now I want to create "fill" matrix that reflects the margins. seats <- c(17,24,28,30,34,36,40,44,46,50) mandates <- c(107,23,24,19,112,19,25,20) Both vectors adds up ...
    Stefan PeterssonStefan Petersson
    Sep 11, 2014 at 8:47 am
    Sep 11, 2014 at 8:52 pm
  • Dear R members, I have this data frame of 100 years in the following format year month day A B C D where A,B,C and D are item number sold each day. I am trying 1-split the data w.r.t the monthly ...
    Eliza bottoEliza botto
    Sep 8, 2014 at 7:08 pm
    Sep 9, 2014 at 5:08 pm
  • Greetings, I am currently exploring some capabilities of the 'Shiny' package. I am currently working with the most recent version of 'shiny' from the rstudio github repository (version - 0.10.1.9006) ...
    Charles Determan JrCharles Determan Jr
    Sep 2, 2014 at 4:59 pm
    Sep 3, 2014 at 8:08 pm
  • Dear R help mailing list, I am looking for an ID3 implementation in R. I know that there are many other decision tree algorithms already implemented (via rpart, tree, caret, C50, etc., etc.), but for ...
    Tal GaliliTal Galili
    Sep 2, 2014 at 3:01 pm
    Sep 2, 2014 at 4:11 pm
  • Hi, I've not used R for about one year and don't know well about the updates on the time series-related package. My primary job is to do economic/financial time series data analysis - annual, ...
    Jpm miaoJpm miao
    Sep 29, 2014 at 9:05 am
    Sep 29, 2014 at 1:00 pm
  • Dear useRs, Here is my data with two columns and 20 rows. structure(c(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, ...
    Eliza bottoEliza botto
    Sep 25, 2014 at 7:50 pm
    Sep 26, 2014 at 12:04 am
  • Hi, I have a matrix of data, with the rows representing observations and the columns representing various values that the observation can take on. In other words, each row can be thought of as a ...
    MattMatt
    Sep 24, 2014 at 3:26 pm
    Sep 25, 2014 at 11:59 am
  • Hi, Can R be run on ubuntu 14.04 LTS without problem or is there any incompatibility? Thanks Carol [[alternative HTML version deleted]]
    Carol whiteCarol white
    Sep 24, 2014 at 6:58 pm
    Sep 24, 2014 at 10:49 pm
  • Sorry if this is well-known, but I can't find an answer or maybe just don't know how to ask Google the right question. If I run the following code in R (3.1.1), I find that lattice:::xyplot.formula ...
    Kevin WrightKevin Wright
    Sep 24, 2014 at 6:56 pm
    Sep 24, 2014 at 8:24 pm
  • Hi, If I want to divide the column of a matrix by the sum of the column, should I loop over the columns or can I use apply family? Regards, Carol [[alternative HTML version deleted]]
    Carol whiteCarol white
    Sep 23, 2014 at 3:10 pm
    Sep 23, 2014 at 10:10 pm
  • Hi, I have to deal with time-stamped data coming from outside my own time zone, so the problem is likely poor knowledge of European time zones on my part. But I am puzzled just the same. I thought ...
    Denis ChabotDenis Chabot
    Sep 21, 2014 at 1:11 pm
    Sep 21, 2014 at 3:36 pm
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291 users for September 2014

Duncan Murdoch: 42 posts David Winsemius: 37 posts Jeff Newmiller: 27 posts David L Carlson: 25 posts William Dunlap: 22 posts Mohan Radhakrishnan: 19 posts PO SU: 18 posts Peter dalgaard: 16 posts Rolf Turner: 16 posts PIKAL Petr: 15 posts Angel Rodriguez: 13 posts John McKown: 13 posts Prof Brian Ripley: 13 posts Marc Schwartz: 12 posts Rl: 11 posts Bert Gunter: 11 posts Eliza botto: 10 posts Jim Lemon: 10 posts Pascal Oettli: 10 posts Rui Barradas: 10 posts
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