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258 discussions - 997 posts

  • Dear all, I am writing as I would like your help. I have a dataframe with two columns, ASB and Flow, where the the first one has values 1, 2 or 3 and the second flow data. Something like that ...
    Maria LathouriMaria Lathouri
    Sep 15, 2015 at 10:56 am
    Sep 17, 2015 at 4:29 pm
  • Hello, everyone, I am using a nls regression with 6 groups data. I am trying to coerce a parameter to 1 by using a upper and lower statement. but I always get an error like below: Error in ...
    Jianling FanJianling Fan
    Sep 19, 2015 at 4:54 am
    Sep 22, 2015 at 6:55 pm
  • I have data that may be the mixture of two normal distributions (one contained within the other) vs. a single normal. I used normalmixEM to get estimates of parameters assuming two normals: GLUT <- ...
    John SorkinJohn Sorkin
    Sep 22, 2015 at 8:21 pm
    Sep 23, 2015 at 8:27 pm
  • Dear 'R' community support, I am a student at Skema business school and I have recently submitted my MSc thesis/dissertation. This has been passed on to an external plagiarism service provider, ...
    BARRETT, OliverBARRETT, Oliver
    Sep 22, 2015 at 2:27 pm
    Sep 24, 2015 at 11:35 pm
  • The problem is that quotes in csv files are commonly held to me meaningless (i.e. they don't automatically force components to be strings). Earlier this morning I committed a fix to readr so that ...
    Hadley WickhamHadley Wickham
    Sep 22, 2015 at 9:58 pm
    Sep 23, 2015 at 7:05 pm
  • Dear R- users I want to generate ordered categorical variable vector with 200x1 dimension and from 1 to 4 categories and i tried with this code Q1=runif(200,1,4) the results are not just 1 ,2 3,4, ...
    Thanoon younisThanoon younis
    Sep 16, 2015 at 5:11 pm
    Sep 17, 2015 at 2:19 pm
  • Dear users, I'm having troubles with reshaping a data.frame from long to wide format. I copy the output of dput() at the end of the mail because it is quite long. Each row of the column "Elem" should ...
    Ivan CalandraIvan Calandra
    Sep 8, 2015 at 10:33 am
    Sep 9, 2015 at 8:02 am
  • Hi everyone! I want to change the line type into a square/circle/triangle in a plot, and I can not find the way, could someone help me please?? I used the glm/predict function to predict the curves ...
    Laurafdez56Laurafdez56
    Sep 14, 2015 at 12:11 pm
    Sep 16, 2015 at 1:17 am
  • Dear All, Suppose you have a distance matrix stored like a dist object, for instance x<-rnorm(20) y<-rnorm(20) mm<-as.matrix(cbind(x,y)) dst<-(dist(mm)) Now, my problem is the following: I would like ...
    Lorenzo IsellaLorenzo Isella
    Sep 23, 2015 at 7:15 pm
    Sep 25, 2015 at 8:56 pm
  • Can anyone think of a slick way to create an array that looks like c(1:n, 1:(n-1), 1:(n-2), ... , 1)? The following works, but it's inefficient and a little hard to follow: n<-5 ...
    Dan DDan D
    Sep 17, 2015 at 6:19 pm
    Sep 22, 2015 at 8:34 pm
  • It appears that at least three major spreadsheets, Excel, Apache OpenOffice Cal and gnumeric have a problem with the correct order of operations when dealing with exponents. The gnumeric result is ...
    John KaneJohn Kane
    Sep 18, 2015 at 1:39 pm
    Sep 18, 2015 at 8:17 pm
  • Dear all, I have 3-hourly temperature data from 1970-2010 for 122 cities in the US. I would like to bin this data by city-year-week. My idea is if the temperature for a particular city in a given ...
    Shouro DasguptaShouro Dasgupta
    Sep 10, 2015 at 10:28 pm
    Sep 11, 2015 at 11:06 am
  • Hello r-help, I am quite new to R. I downloaded R 3.2.2 for Windows to use with Windows 10. On attempting to load the RcmdrPlugin.survival plug-in I got this error message: Error in ...
    Joyaa AntaresJoyaa Antares
    Sep 3, 2015 at 12:31 pm
    Sep 5, 2015 at 12:33 pm
  • Hello - I?m working on dataset that will eventually be used in an xyz-plot. I?m having trouble figuring out the best way to store the data (see an attached .csv sheet exported from Excel). Some ...
    Alfa DialloAlfa Diallo
    Sep 17, 2015 at 8:41 pm
    Sep 18, 2015 at 10:29 pm
  • Hi, I started using R recently and everything was going perfect until I stoped seeing my output results in the R console. Now, instead of showing " " on the console before the command, it shows "+" ...
    Sofia SaldanhaSofia Saldanha
    Sep 7, 2015 at 10:37 am
    Sep 18, 2015 at 12:27 pm
  • Hi I have posted the following question on stackoverflow [1] but haven't received a response yet. Has somebody here any idea, how to formulate non-linear constraints using e.g. the packages alabama ...
    Rainer M KrugRainer M Krug
    Sep 30, 2015 at 8:46 am
    Oct 7, 2015 at 8:19 am
  • (x <- c("q10_1", "q10_2", "q10_11", "q12_1", "q12_2", "q13_1", "q13_11")) # Which strings start with "q10" or "q12? - WORKS x[grep("^q10|q12", x)] # Which strings end with "1"? - WORKS x[grep("1$", ...
    Dimitri LiakhovitskiDimitri Liakhovitski
    Sep 17, 2015 at 9:11 pm
    Sep 18, 2015 at 1:06 pm
  • I need a function for regularising the time base of electronically acquired signals (i.e. vectors of samples with a nominally constant time base). For example, the accelerometer in my smartphone can ...
    AltShiftAltShift
    Sep 6, 2015 at 11:54 am
    Sep 11, 2015 at 12:44 pm
  • # your data VAS<-c("Green","Green","Black","Green","White","Yellow","Yellow","Black","Green","Black") # declare the new vector New_Vector<-numeric(length(VAS)) # brute force ...
    Dan DDan D
    Sep 5, 2015 at 9:14 pm
    Sep 9, 2015 at 10:03 pm
  • Hi, is there a way to automatically call dev.off()? I use options(device="myfunc") to automatically open a device to print to. Afterwards, I would like to close it (so that the file is actually ...
    AxionatorAxionator
    Sep 1, 2015 at 11:34 am
    Sep 1, 2015 at 3:36 pm
  • Dear All, I'm trying to write a function in the values of some numeric vectors (d1,d2,...,d(m-1)). This function should be applied on some combinations of the elements of the (m-1) d vectors that ...
    Maram SAlemMaram SAlem
    Sep 30, 2015 at 3:33 pm
    Oct 1, 2015 at 12:44 pm
  • Hi all, In R, is there a function for the cumulative distribution function for multinomial distribution? I only see pmultinom and rmultinom which are the prabability mass function and the function ...
    Li liLi li
    Sep 29, 2015 at 1:58 am
    Sep 30, 2015 at 8:52 pm
  • R 3.2.0 OS X Colleagues, In the past, I used a package: SASxport to output files to SAS?s XPT format. This was useful because FDA requests that data be submitted in that format (even though they ...
    Dennis FisherDennis Fisher
    Sep 25, 2015 at 2:25 pm
    Sep 25, 2015 at 8:13 pm
  • Hi All, I need to do the following operation from data.frame: df <- data.frame(Year = c("2001", "2002", "2003", "2004", "2005", "2006", "2007"), Amount = c(150, 120, 175, 160, 120, 105, 135)) ...
    Nico GutierrezNico Gutierrez
    Sep 21, 2015 at 2:52 pm
    Sep 22, 2015 at 7:52 am
  • What is the access time for R lists given a name of list element, is it linear, log, or constant? Than what are to rules for names in R-lists That reusing names is possible makes me wonder. tmp <- ...
    Witold E WolskiWitold E Wolski
    Sep 7, 2015 at 10:34 am
    Sep 8, 2015 at 4:02 pm
  • Hello, I am currently working with a dataframe which has some missing values represented by "NA". whenever, I add two columns in which at least one of the pair of an observation is "NA", the sum ...
    Olu OlaOlu Ola
    Sep 6, 2015 at 10:22 pm
    Sep 7, 2015 at 4:27 am
  • Hi, to test randomness of time series whose values can only be +1 and -1, are all following randomness tests applicable or only a part of ? cox.stuart.test difference.sign.test bartels.rank.test ...
    Giorgio GarzianoGiorgio Garziano
    Sep 22, 2015 at 8:24 pm
    Sep 25, 2015 at 7:22 pm
  • Dear all, I?m trying to compute Odds ratio and OR confidence interval. I?m really naive, sorry for that. I attach my data and my code. I?m having lots of errors: 1. Error in data.frame(tas1 = ...
    Rosa OliveiraRosa Oliveira
    Sep 22, 2015 at 9:17 pm
    Sep 24, 2015 at 1:16 pm
  • Hello all,?I am trying to run a random intercept model using lme4. The random effect is a factor of 29 possibilities, making a model with one random effect (one level). It is just a linear model ...
    Rory WilsonRory Wilson
    Sep 22, 2015 at 1:18 pm
    Sep 23, 2015 at 1:57 pm
  • Dear all, I?m trying to do a graph, 3 rows, 5 columns, with the design: # 3 4 5 6 # 2 # 7 8 9 10 I had a code for 3 rows, 3 columns, with the design:: # 3 4 # 2 # 7 8 and I tried to modify it, but I ...
    Rosa OliveiraRosa Oliveira
    Sep 16, 2015 at 4:45 pm
    Sep 21, 2015 at 10:52 am
  • Hi, I need to generate 1000 numbers from N(u, a^2), however I don't want to include 0 and negative values. How can I use beta distribution approximate to N(u, a^2) in R. Thx for help
    Chien-Pang ChinChien-Pang Chin
    Sep 15, 2015 at 10:58 am
    Sep 15, 2015 at 6:12 pm
  • Hey, i want to remove outliers so I tried do do this: # 1 define mean and sd sd.AT_ZU_SPAET <- sd(AT_ZU_SPAET) mitt.AT_ZU_SPAET <- mean(AT_ZU_SPAET) # sd.Anzahl_BAF <- sd(Anzahl_BAF) mitt.Anzahl_BAF ...
    JuliJuli
    Sep 11, 2015 at 2:15 pm
    Sep 15, 2015 at 8:37 am
  • Dear all, please could you advise about a method to scale 2 plots of LOESS curves. More specifically, we do have 2 sets of 5C data, and the loess plots reflect the relationship between INTENSITY and ...
    Bogdan TanasaBogdan Tanasa
    Sep 7, 2015 at 6:00 am
    Sep 11, 2015 at 8:45 am
  • Hello all, I am trying to fit my data to a nls model. I have many sets of data and each can fit well for the curve. but I want to fit them at once by sharing 2 of 3 parameters of the model. I know it ...
    Jianling FanJianling Fan
    Sep 9, 2015 at 4:04 pm
    Sep 9, 2015 at 5:29 pm
  • Suppose I had the following string, which has length of integer multiple of some value n. So, say n=2, and the example string has a length of (2x4) = 8 characters. str <- "ABCDEFGH" What I'm trying ...
    Evan CoochEvan Cooch
    Sep 5, 2015 at 8:59 pm
    Sep 8, 2015 at 9:54 pm
  • Sir/Madam, I am a scholar at Aligarh Muslim University and have been continuously using R language. Recently, I am stuck on labeling axis of the graphic, I have made. Actually, I want to use ...
    Romana ShehlaRomana Shehla
    Sep 2, 2015 at 3:21 pm
    Sep 4, 2015 at 10:40 pm
  • p value should be 0.3 On Wed, Sep 2, 2015 at 8:07 PM, Navien [via R] wrote: -- View this message in context ...
    ShawinShawin
    Sep 2, 2015 at 7:08 pm
    Sep 4, 2015 at 10:39 am
  • Dear all, would appreciate a piece of help with a simple question: I am reading in R a file that is formatted as a matrix (an example is shown below, although it is more complex, a matrix of 1000 * ...
    Bogdan TanasaBogdan Tanasa
    Sep 2, 2015 at 10:11 pm
    Sep 2, 2015 at 11:42 pm
  • Is there a way to get significance codes after a pairwise comparisons to a Kruskall wallis test? With significance codes I mean letter codes (a, b,c) that are assigned to treatments to indicate where ...
    Michael EisenringMichael Eisenring
    Sep 26, 2015 at 5:01 am
    Sep 28, 2015 at 4:28 pm
  • I am new to R And while learning the language inside the dev tools is easy and fun I wonder how R applications are deployed and distributed to the typical business users I searched online of course ...
    Ali M.Ali M.
    Sep 28, 2015 at 8:23 am
    Sep 28, 2015 at 2:21 pm
  • Hi all, I am looking for something that indicates the goodness of fit for my non linear regression model (since R2 is not very reliable). I read that the standard error of estimate (also known as ...
    Michael EisenringMichael Eisenring
    Sep 26, 2015 at 5:08 am
    Sep 26, 2015 at 8:26 pm
  • I just upgraded my laptop from Fedora Core 20 to Fedora Core 22, and after the upgrade R can no longer use the ggplot2 library. The principal complaint seems to be that libicui18n.so.50 is not ...
    Jeff TrefftzsJeff Trefftzs
    Sep 3, 2015 at 7:03 pm
    Sep 21, 2015 at 6:00 pm
  • Hi everybody, df1 <- data.frame(subject=c('user1','user2', 'user3', 'user4'), item1=c(0,1,2,5), item2=c(1,2,1,2), item3=c(2,3,4,0), item4=c(0,3,3,2), item5=c(5,5,5,5)) Users can choose an answer from ...
    Kai MxKai Mx
    Sep 16, 2015 at 8:43 pm
    Sep 17, 2015 at 9:26 pm
  • Hello, I have a data like this:1 2331 3331 4551 3452 5432 4332 3442 4003 4443 1113 0003 432I want to change it to this new dataset:c1 ? ?c2 ? ? c3233 ?543 ?444333 ?433 ?111455 ?344 ?000345 ?400 ?432 ...
    Zahra KarimiZahra Karimi
    Sep 13, 2015 at 5:12 am
    Sep 16, 2015 at 1:20 am
  • Hi all, I have the following data "tmp" and I want to plot boxplots for each level of the factor "type" and the order the factor should be c, b ,a. In other words, the boxplot corresponding to the ...
    Li liLi li
    Sep 15, 2015 at 1:23 am
    Sep 15, 2015 at 8:04 pm
  • I would greatly appreciate if you could let me know why the R does not make the right computations in the case below. Waiting for your reply Jorge Cola?o R version 3.2.2 (2015-08-14) -- "Fire Safety" ...
    JORGE COLACOJORGE COLACO
    Sep 14, 2015 at 3:11 pm
    Sep 14, 2015 at 11:02 pm
  • I came across this behavior when I followed the code of function 'rank' in R. It seems that subassignment of a vector by a logical index vector that is longer than the original vector always results ...
    Suharto Anggono Suharto AnggonoSuharto Anggono Suharto Anggono
    Sep 5, 2015 at 5:02 pm
    Sep 13, 2015 at 5:50 pm
  • Hi there, I want to find the intersection between two different data frame or matrices based on two columns. for example in matrix A I have 5 columns, the first two columns are Id1 and Id2 and I have ...
    Lida ZeighamiLida Zeighami
    Sep 9, 2015 at 7:39 pm
    Sep 9, 2015 at 8:16 pm
  • Hi, I have data that looks like this: * head(ratings) QCode PID RaterName SI1 SI2 SI3 SI4 SI5 SI6 SI7 SI8 SI9 SI10 SI111 GUILT 1123 cwormhoudt 2 2 3 1 1 1 3 3 3 2 12 LOVE 1123 cwormhoudt 1 2 3 2 1 1 ...
    Matt PickardMatt Pickard
    Sep 1, 2015 at 4:14 am
    Sep 1, 2015 at 3:46 pm
  • Hello I started to work on nonlinear regressions recently, I want to compare a set of models and would like to use an equivalent of R2 for nonlinear regression models. I learned that a good ...
    Michael EisenringMichael Eisenring
    Sep 30, 2015 at 12:08 am
    Sep 30, 2015 at 1:51 pm
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