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Forum: R

R programming and usage, R news, R tips and tutorials

  1. Sticky Thread Sticky: Today I Learned: ____

    I thought it might be nice to just have a place to post some happy little things you learned or (re)discovered about R that makes your life nicer and...

    Started by Dason‎, 01-03-2012 11:39 AM
    27 Pages
    1 2 3 ... 27
    • Replies: 391
    • Views: 270,850
    11-05-2017, 08:22 PM Go to last post
  2. Sticky Thread Sticky: R News and Updates

    I'm starting this thread out of frustration for my own oversight. blog.revolutionanalytics.com was having an R webinar today (LINK) that looked...

    Started by trinker‎, 08-24-2011 09:41 AM
    8 Pages
    1 2 3 ... 8
    news
    • Replies: 115
    • Views: 112,140
    09-29-2017, 08:14 PM Go to last post
  3. Sticky Thread Sticky: What R packages are you aching to see?

    Are there any R packages that don't yet exist that you wish existed? What kinds of things do you wish were easier to do in R? What things do you...

    Started by Dason‎, 11-19-2015 01:38 AM
    • Replies: 2
    • Views: 13,540
    07-20-2017, 10:43 AM Go to last post
  4. Sticky Thread Sticky: [R Graphics] Beautiful graphics thread

    Hi Everyone, I thought I might start a thread which showcases the graphics abilities of R. I'll start it off with one I just made. This thread...

    Started by TheEcologist‎, 10-17-2012 05:08 AM
    9 Pages
    1 2 3 ... 9
    • Replies: 120
    • Views: 117,190
    12-13-2016, 05:47 PM Go to last post
  5. Sticky Thread Sticky: Share your functions & code

    I’m starting this thread as a sharing thread. The power of is in building and sharing on one another’s creativity. I’m often amazed at how people...

    Started by trinker‎, 06-25-2011 03:42 PM
    20 Pages
    1 2 3 ... 20
    • Replies: 286
    • Views: 256,602
    09-13-2016, 03:35 PM Go to last post
  6. Sticky Thread Sticky: Info for R users (Links, Manuals, Books, etc.)

    Note: This original post has been modified to make it easier to find the resources in the thread and to compile them into one location. If you want...

    Started by Tart‎, 08-06-2008 09:22 AM
    7 Pages
    1 2 3 ... 7
    information
    • Replies: 100
    • Views: 124,588
    04-14-2016, 01:02 PM Go to last post
  7. Sticky Thread Sticky: How to use Code tags

    Using Code Tags This thread contains a brief introduction to using code tags and presenting code in general on this forum. I'm biased toward R so...

    Started by Dason‎, 10-17-2012 07:20 PM
    • Replies: 0
    • Views: 26,204
    10-17-2012, 07:20 PM Go to last post
  1. Average of last n cases

    I'm trying to calculate something which I assume that is relatively straightforward but I can't seem to get my head round it. Perhaps you can help. ...

    Started by chaps‎, 09-18-2015 04:25 AM
    • Replies: 7
    • Views: 2,028
    09-19-2015, 10:29 AM Go to last post
  2. Why does my naive Bayes classifier suck: i.e., what am I messing up?

    I've been learning about classifiers and naive Bayes was an easier one for me to understand. I tried it today and did not get results I was...

    Started by trinker‎, 09-19-2015 08:23 AM
    • Replies: 0
    • Views: 1,315
    09-19-2015, 08:23 AM Go to last post
  3. do.call and apply() I'm doing something wrong here... :(

    Hello! So I'm looking at the a large dataset of items in a 1 to 3 likert-type point scale. I usually like to see how many people endorsed each...

    Started by spunky‎, 09-17-2015 02:32 PM
    2 Pages
    1 2
    • Replies: 18
    • Views: 2,378
    09-18-2015, 11:55 AM Go to last post
  4. Simple Loop in R help

    Question: Turn the loop from problem 4 into a function that can run any number of times (not just 20). Call the function “demo loop”. for (i in...

    Started by paigen‎, 09-18-2015 09:36 AM
    • Replies: 0
    • Views: 1,035
    09-18-2015, 09:36 AM Go to last post
  5. Convert a variable into uniform distribution with R

    Hi all; I would be grateful if you could help me ‏How could I convert a non-uniform variable distribution to a uniform distribution? Thanks in...

    Started by Nour‎, 09-18-2015 04:03 AM
    • Replies: 4
    • Views: 1,324
    09-18-2015, 08:36 AM Go to last post
  6. How to add a new variable based on different dates within subjects?

    My datafile contains the following variables: "subject","date","trialnum", "trialcode", "values.actor", "values.latency", "values.answer" My...

    Started by Funmath‎, 09-17-2015 10:21 AM
    • Replies: 1
    • Views: 919
    09-18-2015, 08:08 AM Go to last post
  7. Probability in R

    I'm new to R and i don't understand how to go about solving probability in R. Here's an example of what I'm confused on how to do: Suppose a...

    Started by paigen‎, 09-17-2015 11:28 AM
    • Replies: 2
    • Views: 1,193
    09-17-2015, 11:51 AM Go to last post
  8. How to use Reshape2 to convert long data into wide data?

    I have tried to use dcast (from reshape2) for converting my data into the wide format. Since I just started working with R it is likely that I make a...

    Started by Funmath‎, 09-11-2015 09:46 AM
    • Replies: 7
    • Views: 2,905
    09-17-2015, 09:22 AM Go to last post
  9. data.table....

    HI ther's a fast and intelligent way to select data.table column as vector and change in palce its value? for example if i try this verbose...

    Started by Madp‎, 09-17-2015 08:11 AM
    • Replies: 0
    • Views: 932
    09-17-2015, 08:11 AM Go to last post
  10. plotting velocities

    Hi guys, I am fairly new to R and would like your help on to plot velocities of different particles. I have the coordinates, particle ID, velocity of...

    Started by Izabell‎, 09-13-2015 01:17 PM
    • Replies: 1
    • Views: 1,288
    09-13-2015, 04:33 PM Go to last post
  11. LogisticDx: help with the command 'plot'

    Hello, I was interested in using the LogisticDx package to plot some diagnostic charts. While I manage to run the sample code, I cannot get the...

    Started by gianmarco‎, 09-09-2015 04:51 AM
    • Replies: 4
    • Views: 2,188
    09-12-2015, 01:10 PM Go to last post
  12. Copy R/Rstudio console with original colour formatting

    Hi Everyone, Just a newbie computer-savvy problem - not related to R coding or stats: How do I copy from the console (either R or RStudio...

    Started by BeeStatsGuy‎, 09-10-2015 05:42 AM
    color, colour, console, copy, format
    • Replies: 0
    • Views: 1,513
    09-10-2015, 05:42 AM Go to last post
  13. Data.table and using invisible()

    FAQ 2.18 of data.table indicates that by using invisible() one can run the function passed as j without generating any output. I used the example...

    Started by merik‎, 09-03-2015 07:53 PM
    • Replies: 3
    • Views: 1,842
    09-09-2015, 08:35 AM Go to last post
  14. How do I plot this regression line?

    Delete delete delete

    Started by Dave Brunner‎, 09-08-2015 02:05 PM
    • Replies: 6
    • Views: 2,063
    09-08-2015, 05:30 PM Go to last post
  15. Do more CRAN packages end in R than one might expect?

    It's pretty common for CRAN package developers to add an arbitrary r onto the end of their package names. I got to wondering how prevalent this is...

    Started by trinker‎, 09-06-2015 01:51 PM
    • Replies: 4
    • Views: 1,662
    09-08-2015, 11:55 AM Go to last post
  16. Problems with scan function

    Hi, I am having problems with scan() function, using it to get values from console. The above code doesn't work properly. It doesn't stop after...

    Started by juanvg1972‎, 09-07-2015 06:54 AM
    data frame, values
    • Replies: 0
    • Views: 1,325
    09-07-2015, 06:54 AM Go to last post
  17. create new column from old ones, ignoring NAs

    This should be easy but I can't figure out how to do it. Here's an example where I have dataset M with multiple conditions and columns with missing...

    Started by maziana‎, 09-06-2015 08:30 AM
    • Replies: 5
    • Views: 1,343
    09-07-2015, 12:11 AM Go to last post
  18. Add a Date Column to a .csv File

    I have the following table in a .csv file. Date Race Distance H_No H_Name EA Barrier Wt P_Date P_Distance Stage...

    Started by FFA‎, 09-01-2015 09:18 PM
    csv
    • Replies: 2
    • Views: 1,367
    09-06-2015, 06:59 AM Go to last post
  19. I need help figuring out what everything means in the "lme" command

    Hi, I am trying to use lme for a multivariate study, and am following a list of instructions online...

    Started by Gilthoniel‎, 09-04-2015 11:52 AM
    • Replies: 0
    • Views: 794
    09-04-2015, 11:52 AM Go to last post
  20. Merge() giving undefined columns selected error when attempting to arrange columns

    What I'm trying to do: I have a master data frame that contains state and zip code columns. I have reference data frames that contain Metropolitan...

    Started by APOCooter‎, 09-04-2015 09:21 AM
    • Replies: 2
    • Views: 1,441
    09-04-2015, 11:26 AM Go to last post
  21. Garch

    what is the code in fGarch package for removing the constant term (omega) from GARCH model when the omega is not significant.

    Started by nonso‎, 09-04-2015 07:17 AM
    • Replies: 0
    • Views: 919
    09-04-2015, 07:17 AM Go to last post
  22. seemingly equivalent ways of accessing values in a data frame give different results

    I have a data frame called "totals" with 1 row and 12 columns. The entries are all integers, and the columns have names. The first column is named...

    Started by efoss‎, 09-03-2015 01:16 PM
    • Replies: 2
    • Views: 1,459
    09-03-2015, 01:49 PM Go to last post
  23. Question [SOLVED] Car package in R is not loading (it simply blocks R)

    So, I have installed the CAR package in R (with the dependencies) and when I try to load it, it simply blocks the program, it cannot be loaded. I...

    Started by hex01‎, 09-02-2015 01:06 AM
    loading package, rstudio
    • Replies: 11
    • Views: 4,082
    09-03-2015, 08:37 AM Go to last post
  24. Problems plotting a data.frame

    Hi, I am trying to do a simple graph with plot() function. When I do the plot with two columns of the data.frame the style options dosen't work....

    Started by juanvg1972‎, 09-02-2015 06:08 AM
    axis(), plot
    • Replies: 3
    • Views: 2,091
    09-02-2015, 05:14 PM Go to last post
  25. R books

    Hello everyone, I began to study hard on R, I took two books, only would like a view of the most experienced on which one to get, or even other...

    Started by askazy‎, 01-08-2015 06:51 AM
    • Replies: 10
    • Views: 2,739
    09-02-2015, 04:50 PM Go to last post
  26. multilevel analysis

    Dear folks, I have nested data within schoolclasses, therefore I want to run multilevel analysis' with R, package lme4. My hypothesis is H0: x =...

    Started by St_Fo‎, 09-02-2015 07:54 AM
    hypotheis test, multi level, multilevel analysis
    • Replies: 1
    • Views: 1,185
    09-02-2015, 04:18 PM Go to last post
  27. Indexing for more efficient sort and merge

    In relational databases, you can enable more efficient sorting and joining by creating indexes for your tables. These indexes, which are essentially...

    Started by merik‎, 09-02-2015 09:23 AM
    • Replies: 1
    • Views: 2,316
    09-02-2015, 12:29 PM Go to last post
  28. R vs Sas vs Splus vs Matlab vs others

    Can someone explain to me the pros and cons of all these software packages? Which one would you use if you can start all over again? Thanks.

    Started by shrek‎, 05-16-2008 02:40 PM
    3 Pages
    1 2 3
    • Replies: 31
    • Views: 117,196
    09-01-2015, 07:27 AM Go to last post
  29. Problem with fanny function

    Hi. I have a problem with this code: “require(cluster) data1 <-...

    Started by alb‎, 08-31-2015 01:15 PM
    • Replies: 0
    • Views: 2,380
    08-31-2015, 01:15 PM Go to last post
  30. Apply function in R

    Hi, I want to apply a user defined function over a matrix object. I don't have desired results my input is a 4x4 matrix and I want to get as output...

    Started by juanvg1972‎, 08-31-2015 11:48 AM
    r apply
    • Replies: 0
    • Views: 1,111
    08-31-2015, 11:48 AM Go to last post
  31. but are character vectors really immutable in R?

    but are character vectors really immutable in R or not? if yes how i can make it immutable? for ex, I want: x <- charvector y <- x x <- modified...

    Started by Madp‎, 08-28-2015 08:45 AM
    • Replies: 8
    • Views: 2,122
    08-28-2015, 11:54 AM Go to last post
  32. Find the mean of columns and adding these values back to a data frame

    Hello Talk Stats forum: I am new at R hence this basic question. I have imported a simple excel csv file using the read.csv method and have...

    Started by R2015‎, 08-28-2015 09:23 AM
    • Replies: 5
    • Views: 1,415
    08-28-2015, 10:21 AM Go to last post
  33. R Markdown document-How do you display/format a References/Bibliography section?

    Hello, I am trying to write a scientific paper using R Markdown, but am unsure about the best way to include the references section. Since I have...

    Started by helloR123‎, 08-27-2015 01:56 PM
    bibliography, bibtex, r language, r markdown, references
    • Replies: 0
    • Views: 1,155
    08-27-2015, 01:56 PM Go to last post
  34. Looking for contributors to join our team

    Hi everyone, I hope you find this post useful. Recently we developed a website DataScience+ to share some R tutorials with other R users. We...

    Started by klo‎, 08-25-2015 11:55 AM
    r programing
    • Replies: 0
    • Views: 1,235
    08-25-2015, 11:55 AM Go to last post
  35. How to draw a ROC curve in R

    I know how to estimate a model and then draw a ROC curve using R. But I have got a dataset which has already included probability of failure and the...

    Started by t.wang21@yahoo.com.au‎, 08-20-2015 07:59 PM
    • Replies: 2
    • Views: 2,666
    08-23-2015, 04:23 PM Go to last post
  36. Ordering Data

    Hello, everyone! I am still learning to use Statistical softwares and I have a question about R. I have a data table which has one column...

    Started by Gabriella‎, 08-21-2015 11:28 AM
    data, rstudio, tables
    • Replies: 4
    • Views: 1,727
    08-21-2015, 12:32 PM Go to last post
  37. Problems installing Caret package

    Hi, I am having problems installing package caret in order to use library carer install.packages("caret") library(caret The installation...

    Started by juanvg1972‎, 08-13-2015 04:43 PM
    • Replies: 2
    • Views: 3,109
    08-19-2015, 04:48 PM Go to last post
  38. Problem using predictions with decision trees (CART) in CARET package

    I am having problems doing a prediction with decision trees (CART). I have this code: training <- read.csv("pml-training.csv", header=TRUE)...

    Started by juanvg1972‎, 08-19-2015 04:47 PM
    • Replies: 0
    • Views: 1,411
    08-19-2015, 04:47 PM Go to last post
  39. Latent class cluster analysis with mixed data

    I have data that contains continuous and categorical variables and I have to cluster that data using latent class analaysis - LCA. I know that LCA...

    Started by ArtemisEntr3ri‎, 08-19-2015 07:09 AM
    clustering, latent class analysis, latent class modeling, latent profile anaysis
    • Replies: 0
    • Views: 1,306
    08-19-2015, 07:09 AM Go to last post
  40. rsession.exe - Entry Point Not Found

    I recently install the newest version of RStudio Version 0.99.473 and when i start i get this message (error) " rsession.exe - Entry Point Not...

    Started by dezo_pp‎, 08-19-2015 06:26 AM
    • Replies: 0
    • Views: 1,005
    08-19-2015, 06:26 AM Go to last post
  41. RStudio Data View

    Recently i instal the newest version of RStudio Version 0.99.473 and when i want to see the dataset and when i click on the dataset or when i write...

    Started by dezo_pp‎, 08-19-2015 05:13 AM
    • Replies: 0
    • Views: 1,977
    08-19-2015, 05:13 AM Go to last post
  42. Alternative R Implementations

    Hello, despite of GNU-R (www.r-project.org) there are a number of - appearingly more performant - R implementations: Implementation |...

    Started by consuli‎, 08-09-2015 02:20 AM
    • Replies: 1
    • Views: 1,440
    08-19-2015, 04:23 AM Go to last post
  43. Jointure de 2 fichiers avec des colonnes différentes

    bonjour mes amis et amies j'ai problème sur mon code de R .je voudrai faire une fusion des 2 fichiers sans la fonction merge qui est destinée au...

    Started by ndiayediop2‎, 08-19-2015 03:15 AM
    • Replies: 0
    • Views: 5,293
    08-19-2015, 03:15 AM Go to last post
  44. using as.integer as instructed by "The R Book" (2013, p. 44) - doesn't work.

    Hi everyone, I've searched the forums but haven't had any answers on this small problem. I've tried a to coerce a vector to being an integer as...

    Started by BeeStatsGuy‎, 08-18-2015 01:11 PM
    as.integer, code problem
    • Replies: 4
    • Views: 883
    08-19-2015, 02:33 AM Go to last post
  45. Output In R

    Hello All, As i am a newbie in R so most of you would have seen this question zillion times. I searched for the answer on this forum as well on...

    Started by Shivi‎, 08-18-2015 05:29 AM
    r programming and usage, r tips and tutorials
    • Replies: 0
    • Views: 1,370
    08-18-2015, 05:29 AM Go to last post
  46. Help with subsetting

    Hi All, I have a dataset arranged vertically (so the question names are in rows I have used the following code to create a new column...

    Started by drewmac‎, 08-14-2015 09:16 AM
    • Replies: 2
    • Views: 1,393
    08-15-2015, 03:53 AM Go to last post
  47. operators

    Just trying to clarify a couple of things: 1) (this was from chat room) what is the purpose of the % || % operator? and 2)

    Started by bugman‎, 08-13-2015 06:51 PM
    • Replies: 3
    • Views: 2,132
    08-14-2015, 08:56 PM Go to last post
  48. Error in inherits(x, "response") - local variable

    Hey, being absolutely unfamiliar with some basic understanding of how a "inherit" works, I have trouble finding out where I went wrong. I was...

    Started by lammy2004‎, 08-14-2015 05:04 PM
    • Replies: 0
    • Views: 986
    08-14-2015, 05:04 PM Go to last post
  49. error bars on R

    hi eveyone, i'm trying to make some errors bars on my barplots. So I use a way that I know but it is not working for a wilcoxon test, only for a...

    Started by hugues‎, 08-13-2015 12:21 PM
    error bars, gplot, wilcoxon-test
    • Replies: 0
    • Views: 888
    08-13-2015, 12:21 PM Go to last post
  50. Crosstable with 2 var resuming 1 and using weights?

    Hi I've been looking and asking in forums, but i just can't solve this. Suppose you have 4 variables in a survey: sex: sex of the person...

    Started by jfca283‎, 08-11-2015 02:49 PM
    • Replies: 2
    • Views: 1,968
    08-11-2015, 03:09 PM Go to last post
  51. Problems with confirmatory factor analysis in R

    I am trying to teach myself confirmatory factor analysis by working through examples in a textbook. The textbook only contains syntax for LISREL or...

    Started by brittany00‎, 08-11-2015 12:42 PM
    cfa, degreees of freedom, factor analysis, sem
    • Replies: 0
    • Views: 1,901
    08-11-2015, 12:42 PM Go to last post
  52. Long run distribution

    I have been worked out a transition matrix of a Markov chain using the Metropolis algorithm, and now have to use R in order to show that it has the...

    Started by mh03‎, 08-10-2015 12:55 AM
    long run distribution, markov chain, metropolis-hastings
    • Replies: 0
    • Views: 870
    08-10-2015, 12:55 AM Go to last post
  53. Getting incorrect output for R function

    I'm pretty new to using R so apologies if this is a silly question... I have an exercise that asks me to write a function that "given a vector 'x'...

    Started by Bijoux‎, 08-08-2015 01:15 AM
    • Replies: 4
    • Views: 1,567
    08-09-2015, 08:46 PM Go to last post
  54. Zoo objects make me wanna kill a raptor

    Am I getting old or is this a bit wierd library(zoo) cool1=structure(c(9.38024, 9.321716, 9.298116, 6.996241, 6.996241, 7.011319,...

    Started by JesperHP‎, 08-08-2015 10:53 AM
    • Replies: 2
    • Views: 1,259
    08-08-2015, 11:13 AM Go to last post
  55. Profile Confidence Interval in lmer model .

    When I fit lmer model with my data , there is no warning message. But when I tried to construct confidence interval by `confint` , it shows the...

    Started by Cynderella‎, 08-08-2015 08:26 AM
    lme4, lmer, mixed effect models, r help, random effects model
    • Replies: 0
    • Views: 2,850
    08-08-2015, 08:26 AM Go to last post
  56. Need help, please. Trying to graph a table for 1st time

    Hi. I started using for the 1st time this R tool. Today I attempted to create a graph but keep receiving the following message: "In xy.coords(x,...

    Started by Lobo‎, 08-04-2015 07:39 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 3,561
    08-07-2015, 06:52 PM Go to last post
  57. How to remove one axis line plot from plot3d in R

    How to remove lines plot3d in R for particular one axis because when I use type='l' then it is drawing line in every axis. rgl.viewpoint( zoom =...

    Started by swpnit‎, 08-06-2015 03:31 AM
    • Replies: 1
    • Views: 1,833
    08-06-2015, 07:04 PM Go to last post
  58. linking to the MS server

    I am trying to be able to pull data directly from the MS Server into R. Bryan sent me this code conn <- odbcDriverConnect("driver={SQL...

    Started by noetsi‎, 08-04-2015 12:40 PM
    • Replies: 14
    • Views: 1,940
    08-06-2015, 06:51 PM Go to last post
  59. Missing Data in R

    Hello Everyone, I'm a pretty new R user, so let me apologize in advance if I am missing something obvious in my question. I have been looking...

    Started by user100‎, 08-04-2015 06:01 PM
    • Replies: 5
    • Views: 1,887
    08-06-2015, 11:19 AM Go to last post
  60. Find the function from a graph

    Hello, I just wanted to know how to have the function from a graph. Actually I had the graph from the solve of an differential equation, with dS,...

    Started by dentifrice‎, 08-06-2015 12:25 AM
    • Replies: 0
    • Views: 1,529
    08-06-2015, 12:25 AM Go to last post

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