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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: 269,641
    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: 111,580
    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: 13,460
    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: 116,796
    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: 255,466
    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: 124,140
    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: 26,122
    10-17-2012, 07:20 PM Go to last post
  1. Robust regression (rlm) and model/coefficients testing

    Hi there, I am trying to use a robust regression using the rlm procedure, as explained here: http://statistics.ats.ucla.edu/stat/r/dae/rreg.htm...

    Started by Tux‎, 03-28-2016 08:30 PM
    • Replies: 1
    • Views: 1,282
    06-17-2016, 11:54 AM Go to last post
  2. XML Package and Cdata

    Hi, I am struggling to write a code to give me the following output: <BalloonStyle> <text><!</font> <a href="http://www.mysite.com"> ...

    Started by arvin‎, 01-28-2016 04:49 AM
    xml
    • Replies: 1
    • Views: 1,116
    06-17-2016, 11:51 AM Go to last post
  3. R Network - Color-code the nodes based on a separate vector

    I have a matrix B and a vector A (the matrix has value 0 or 1; the vector has value from 0 to 1 continuously; a,b,c are 3 attributes): B =...

    Started by linhdan9627‎, 06-16-2016 12:26 AM
    • Replies: 0
    • Views: 1,117
    06-16-2016, 12:26 AM Go to last post
  4. Simulation for logistic regression in R

    Dear All, I would like to simulate data for logistic regression and I need to have below variables x1=numeric (mean=25,std=5) x2=numeric...

    Started by masarimk‎, 06-13-2016 09:25 AM
    factor, logistic, regression, simulation
    • Replies: 7
    • Views: 1,428
    06-15-2016, 03:58 PM Go to last post
  5. Interpretation interaction term in glmer()

    Hi, I am using the glmer() function from the package lme4 for a mixed logistic regression model. Here, the formula is Y ~ X + Z + X:Z, where Y is...

    Started by mmercker‎, 06-15-2016 10:20 AM
    glmer binomial, interaction effect, interpretation
    • Replies: 5
    • Views: 3,457
    06-15-2016, 03:05 PM Go to last post
  6. Problem with [,,,1]

    Hi everybody, I have some problems with this operator I have this code: for (file in files) { + img <- f.read.analyze.volume(file) + ...

    Started by BeaLena‎, 06-12-2016 10:59 AM
    cran, dimensions, mask
    • Replies: 2
    • Views: 1,094
    06-15-2016, 08:59 AM Go to last post
  7. Pca

    HELLO, HELP Here is : I want to run a PCA, and then there should be all numeric variables to run, right? First, I combine d1 and d2 , which are...

    Started by jjwang‎, 06-13-2016 08:12 PM
    • Replies: 0
    • Views: 702
    06-13-2016, 08:12 PM Go to last post
  8. Detecting careless responding with R

    I have a typical dataset: the first column is a list of participant ID numbers, followed by some questionnaire response data. I want to check for...

    Started by divinityofnumber‎, 06-11-2016 02:20 PM
    • Replies: 7
    • Views: 1,550
    06-13-2016, 02:21 AM Go to last post
  9. Post How to do weighted ridge regression in R?

    How can we do weighted ridge regression in R? In MASS package in R, I can do weighted linear regression by passing a weight parameter to `lm`. It...

    Started by mishrasonu1993‎, 06-11-2016 06:08 PM
    linear regressoin, ridge regression, weighted least squares
    • Replies: 0
    • Views: 1,037
    06-11-2016, 06:08 PM Go to last post
  10. interpret effects.mlogit output (mlogit package)

    How can i interpret the output of "effects" comand in mlogit. The model is a conditional multinomial logit. For example how can i interpret the red...

    Started by matto27‎, 06-10-2016 10:00 AM
    • Replies: 1
    • Views: 1,804
    06-11-2016, 02:08 AM Go to last post
  11. Full matching on propensity scores in R

    I would like to ask some help with the following situation. I'm very new to R, but I want to try something since this is impossible in SAS. I...

    Started by anker‎, 02-23-2016 09:03 AM
    • Replies: 14
    • Views: 2,922
    06-08-2016, 06:36 PM Go to last post
  12. What book that can teach R and also statistical concepts

    What books do you guys recommend for a beginner to learn R, but also touch on statistical concepts? I'm not looking for a textbook-style with...

    Started by semidevil‎, 06-08-2016 08:46 AM
    • Replies: 2
    • Views: 2,007
    06-08-2016, 02:18 PM Go to last post
  13. Simulation isn't doing what I thought it should... :(

    Hello! So I'm doing some exploratory simulation studies to build up for something else. The whole thing works but it's giving me a very undesirable...

    Started by spunky‎, 06-07-2016 05:44 PM
    • Replies: 2
    • Views: 1,561
    06-07-2016, 06:38 PM Go to last post
  14. Can't find function in R message?

    Hello, Super simple question. I just installed R and the forecast package. When I try to run: seasadj("object"), I get the error "could not...

    Started by semidevil‎, 06-07-2016 05:01 PM
    • Replies: 1
    • Views: 1,162
    06-07-2016, 05:37 PM Go to last post
  15. Vectorized comparison of column values

    Hi all, I have a large dataset in which each observation contains a time stamp. Now I'm trying to calculate a new variable x that counts, for each...

    Started by ferrand‎, 02-25-2016 03:32 PM
    compare column values, lapply, vectorized
    • Replies: 4
    • Views: 1,190
    06-07-2016, 11:55 AM Go to last post
  16. Smile How to calculate the number of instances of a value

    Hi everyone, this is my first post so please be kind! I have a dataset where there is a reference value which can be duplicated in more than...

    Started by Comet2006‎, 06-07-2016 09:54 AM
    duplication, record count
    • Replies: 0
    • Views: 1,001
    06-07-2016, 09:54 AM Go to last post
  17. Conversion of DICOM in Analyze img - Package: oro.dicom

    Hi everybody, I'm trying to convert my Dicom images in the Analyze tipe, but I found some problems. I wanna access the header info (with a function...

    Started by BeaLena‎, 06-05-2016 09:59 AM
    analyze, cran, erre, oro.dicom
    • Replies: 0
    • Views: 1,553
    06-05-2016, 09:59 AM Go to last post
  18. Importing API into R

    Hi! I'm relatively new to R and trying to import the API data provided here: http://csgolounge.com/api/matches I used: library(rjson)...

    Started by SHUTTEHFACE‎, 06-03-2016 09:10 AM
    r api
    • Replies: 4
    • Views: 829
    06-04-2016, 10:06 PM Go to last post
  19. Knn source code in r

    I'm trying to implement knn in r, however I'm really not getting what should I do, here is my code ## rm(list=ls()) mydata <-...

    Started by hyeri‎, 06-04-2016 04:56 AM
    • Replies: 0
    • Views: 1,012
    06-04-2016, 04:56 AM Go to last post
  20. how to fit the auto arima model

    hi guys, Im new to R and I got a problem unsolved for several days: I got a dataset which covers three years by week and I ran an auto arima...

    Started by yjeana‎, 06-03-2016 05:36 PM
    arima, auto arima, drift, time series
    • Replies: 0
    • Views: 883
    06-03-2016, 05:36 PM Go to last post
  21. calculating average distance between and within 2 sets of points

    Hello, I have two sets of points (A,B), and I would like to calculate the average distance (Euclidean) between points belonging to set A, the...

    Started by gianmarco‎, 06-02-2016 10:25 AM
    • Replies: 4
    • Views: 1,008
    06-03-2016, 01:52 PM Go to last post
  22. pROC (getting bootstrap dataset)

    I ran "pROC" in R and generated an ROC curve with 95% bootstrap confidence interval. Is there a way to get the dataset used for the graph? It has to...

    Started by hlsmith‎, 06-03-2016 11:13 AM
    • Replies: 0
    • Views: 1,102
    06-03-2016, 11:13 AM Go to last post
  23. Overlapping density plots in one panel with frequencies already calculated

    I would like to use code from here: http://stackoverflow.com/questions/26969172/r-clusters-in-histogram but I already calculated frequencies so I...

    Started by mike121‎, 06-02-2016 04:03 PM
    • Replies: 0
    • Views: 659
    06-02-2016, 04:03 PM Go to last post
  24. I Created a Blog with Some Introductory R Tutorials - Check It Out!

    Hey R users, I created a blog for fun with some basic R tutorials. I don't know if I going to keep making tutorials, but if everyone wants more I...

    Started by rprogrammingtutorials‎, 06-02-2016 12:40 PM
    r tutorial, r tutorials
    • Replies: 0
    • Views: 584
    06-02-2016, 12:40 PM Go to last post
  25. linear regression

    If when using: mod_name<-lm(association_gp~indepvar1+indepvar2 etc) summary(mod_name) indepvar has say 3 categories can you collapse 3 into 1...

    Started by tays01s‎, 06-01-2016 08:20 AM
    • Replies: 0
    • Views: 1,045
    06-01-2016, 08:20 AM Go to last post
  26. Count records meeting criteria

    How do I count the number of records meeting a certain criteria or >1

    Started by tays01s‎, 06-01-2016 08:16 AM
    • Replies: 0
    • Views: 1,000
    06-01-2016, 08:16 AM Go to last post
  27. R in server (SSH linux) environment Manual

    Dear talkstats community, i am looking for a manual about using R in a SSH linux environment. My question is: I have the SSH client putty,...

    Started by lucar‎, 06-01-2016 06:49 AM
    linux, remote, server, ssh
    • Replies: 0
    • Views: 1,115
    06-01-2016, 06:49 AM Go to last post
  28. Iterative Majorization R problems

    Hello, I am taking a R class and we are currently working on optimization techniques. I am not to great at R and I can't find anything on the...

    Started by Iris Ilja‎, 06-01-2016 06:34 AM
    • Replies: 1
    • Views: 1,095
    06-01-2016, 06:37 AM Go to last post
  29. Plotting in r

    Hi There I've goodness of fit my data 2 times. one time for normal distribution and another time for T.distribution. I have about 2500 data and I...

    Started by Zore‎, 05-23-2016 06:55 AM
    normal distribution, plot, plotting in r, t distribution
    • Replies: 2
    • Views: 1,013
    05-30-2016, 07:13 AM Go to last post
  30. Smile [R] How to get normal/ rankit scores from non-normal data with ties.

    Hello, I would like to see whether pathogen levels influenced certain bumblebee colony development parameters such as the number of queen pupae...

    Started by master student‎, 05-30-2016 07:09 AM
    • Replies: 0
    • Views: 792
    05-30-2016, 07:09 AM Go to last post
  31. Extract Values from Output in for loop

    Dear community, i am currently trying to extract the four parameters of a fitting output/call: This output will be generated around 5000...

    Started by lucar‎, 05-27-2016 07:19 AM
    call, extract, output, variables
    • Replies: 3
    • Views: 1,567
    05-27-2016, 08:07 AM Go to last post
  32. Help - Sum of two different probability function

    Hi everyone, i'm have some problem to estimate marginal distribution from data. I found three different distributions that explains data quite good:...

    Started by enry93‎, 05-23-2016 05:47 PM
    • Replies: 5
    • Views: 1,970
    05-25-2016, 03:29 AM Go to last post
  33. R help with Binary log reg

    I've identified what I think is the best model for a binary logistic regression, but I need some suggestions for computing confidence intervals for...

    Started by ling5900‎, 05-22-2016 02:07 PM
    • Replies: 0
    • Views: 928
    05-22-2016, 02:07 PM Go to last post
  34. MARS regression (plotmo) understanding

    Hey guys, first post and I'm confused with the results, so I'll try to explain. Basically I'm doing a habitat modelling project predicting the...

    Started by rjc79‎, 05-21-2016 11:25 PM
    • Replies: 2
    • Views: 1,204
    05-22-2016, 01:22 PM Go to last post
  35. Post About Local Linear Trend in R.

    Hi! I installed bsts package to use local linear trend model in R. But while executing it says, package "BoomSpikeSlab" doesnt find its source...

    Started by Jarin‎, 05-21-2016 09:15 PM
    boom, linear trend, r package
    • Replies: 0
    • Views: 941
    05-21-2016, 09:15 PM Go to last post
  36. Help with interpretation

    Hello everyone, I tried to do cluster analysis for my class, but I'm not sure how to interpret the plot I got. Can anyone help me with that...

    Started by tomer‎, 05-18-2016 06:24 AM
    • Replies: 2
    • Views: 1,361
    05-21-2016, 12:46 PM Go to last post
  37. problem with sum(prod())

    hi. I tried to do this functions, but i wronged something, but I don't know what i wronged. can you help me? I writed the right function on paper. ...

    Started by Pinco94‎, 05-11-2016 08:44 AM
    • Replies: 2
    • Views: 1,465
    05-20-2016, 12:50 AM Go to last post
  38. Would you please help me to write the R program for my weather data

    Hello guys! I tried many times to write program in R for getting weekly average temperature for the year 2014. What I have in the excel sheet is...

    Started by bhim‎, 05-16-2016 02:57 PM
    • Replies: 4
    • Views: 1,035
    05-20-2016, 12:26 AM Go to last post
  39. What GLM family if response is Bray-Curtis dissimilarity? Can I use adonis (vegan)?

    I have some questions about testing for effects of different experimental levels on community similarity. I'll explain my planned experimental design...

    Started by rw2‎, 05-19-2016 06:05 AM
    adonis, bray-curtis, community, glm, vegan
    • Replies: 0
    • Views: 881
    05-19-2016, 06:05 AM Go to last post
  40. Numerical Derivatives: Differentiating regression equation

    Dear TS, I am trying to differentiate output of a regression model (equation) using numerical derivatives. rm(list=ls()) require(mfp)...

    Started by ledzep‎, 05-18-2016 09:11 AM
    • Replies: 2
    • Views: 1,297
    05-18-2016, 02:32 PM Go to last post
  41. Time difference calculations

    Does anyone know how to calculate the average time difference by categorical variable(s)? I have three columns. First two have categorical...

    Started by mike121‎, 05-17-2016 09:02 AM
    • Replies: 1
    • Views: 1,209
    05-17-2016, 01:51 PM Go to last post
  42. R: Date Calculation

    Let I have some data against time : time <- seq(ISOdate(2007,7,1,0), ISOdate(2008,4,5,23), by = "1 hour") y <- rnorm(n = length(time))...

    Started by Cynderella‎, 05-14-2016 05:42 AM
    r software
    • Replies: 2
    • Views: 1,280
    05-15-2016, 07:22 AM Go to last post
  43. Confidence intervals from glmer models

    Hi! When reading this, please keep in mind I'm pretty bad with statistics so please bear with me. So, I'm trying to analyse data from an...

    Started by Keffe1‎, 05-13-2016 06:52 AM
    confidence interval, glmer, random factor
    • Replies: 0
    • Views: 1,210
    05-13-2016, 06:52 AM Go to last post
  44. Drawing random samples from clusters

    Dear TS, I have a question regarding generating a random sample from a given data. In my dataframe, I have two groups and I want to generate...

    Started by ledzep‎, 05-05-2016 08:18 AM
    • Replies: 4
    • Views: 1,405
    05-12-2016, 04:56 PM Go to last post
  45. after z-transformation problem with mean-function

    Hey everyone, i used the scale function to conduct a z-transformation. i have a question in respect of a problem, calculating a mean of a column....

    Started by mike_88‎, 04-19-2016 03:50 PM
    function mean, scale, z.transformation
    • Replies: 3
    • Views: 1,119
    05-09-2016, 01:38 AM Go to last post
  46. Sort matches in lists

    I have a list with words that I named "examples". Now I want to compare this list with two other lists "foodCompanies" and "resturants" to see if...

    Started by gulchen‎, 05-07-2016 04:37 AM
    • Replies: 2
    • Views: 1,418
    05-08-2016, 03:28 AM Go to last post
  47. finding how much memory variables use

    Is it possible to see how much memory variables are using in an R session? In Unix, I can type "ls -l" and see how big each of my files is. Can I do...

    Started by efoss‎, 05-07-2016 11:57 AM
    • Replies: 0
    • Views: 1,244
    05-07-2016, 11:57 AM Go to last post
  48. Exclamation Table of coefficient help

    Using R ive made 7 regression models i want to know exactly how this answered (b) A table with the coefficients of the 7possible multiple linear...

    Started by disdat11‎, 05-06-2016 06:15 PM
    • Replies: 0
    • Views: 950
    05-06-2016, 06:15 PM Go to last post
  49. Exclamation Just need some tips

    Hey, I have an assignment that requires us to use data and use R Studio and I have no idea how to do it. If anyone could just give me tips on what I...

    Started by disdat11‎, 05-04-2016 10:15 AM
    • Replies: 1
    • Views: 1,445
    05-05-2016, 05:18 AM Go to last post
  50. Creating Arrays from a two columns dataset

    Hi everybody, I would like to know how I can do the next thing, I have got two columns of a data ser with 10.000 data each one (X and Y), for...

    Started by rafonio‎, 05-04-2016 05:07 AM
    • Replies: 1
    • Views: 2,347
    05-04-2016, 08:11 AM Go to last post
  51. Converting loop into using foreach() and %dopar%

    I am having issues converting the following by using foreach() and %dopar% for (i in 1:nrow(runDate)) { old <- example %>% filter(date <...

    Started by lulumohca‎, 05-01-2016 07:47 PM
    • Replies: 1
    • Views: 1,114
    05-01-2016, 09:37 PM Go to last post
  52. TARX: Threshold Autoregressive Model with exogenous variables

    Hey guys! Iam currently working on my bachelors thesis. I am comparing different methods for electricity price forecastings. The literature uses...

    Started by lamse‎, 08-09-2014 02:43 AM
    • Replies: 4
    • Views: 3,017
    05-01-2016, 05:41 PM Go to last post
  53. Removing NAs from dataframe

    Hi First post and a relative R newbie.... I am using the vioplot library to produce some violin plots. I have an input CSV with columns off...

    Started by mikjsmith‎, 04-30-2016 05:45 AM
    • Replies: 4
    • Views: 3,082
    05-01-2016, 11:48 AM Go to last post
  54. Trying to run poLCA

    Hello, I am trying to run the poLCA program in R. I am running a model with 9 manifest variables, but the model only analyzes and produces output...

    Started by Timothyho09‎, 04-28-2016 01:10 PM
    • Replies: 0
    • Views: 1,401
    04-28-2016, 01:10 PM Go to last post
  55. Package similar to relaimpo for binary regression

    Dear all, I have a quick question that Iím really hoping you can help me with. Iím looking for a similar package to relaimpo that can be...

    Started by anda‎, 04-28-2016 08:22 AM
    regression, relative importance, rsoftware
    • Replies: 0
    • Views: 2,558
    04-28-2016, 08:22 AM Go to last post
  56. Rasterize "fun" query

    Hi I'm wanting to rasterize a polygon (shapefile; values of 1 and 2; 1 = outside a protected area, 2 = inside a protected area), to a 1minute...

    Started by silviakirkman‎, 04-27-2016 12:09 PM
    • Replies: 0
    • Views: 1,073
    04-27-2016, 12:09 PM Go to last post
  57. Problem in loading PLM Package

    Hello, I need to run some panel estimations and I am panning to use the "PLM" package in R software. I installed the package but when I am loading...

    Started by syed_aliraza‎, 04-27-2016 06:56 AM
    • Replies: 0
    • Views: 3,635
    04-27-2016, 06:56 AM Go to last post
  58. questions about lmer4

    The title pretty much sums it up. I have a model with factors Zone, Time and Site and substrate. The response is the number of critters...

    Started by bugman‎, 04-26-2016 01:43 AM
    • Replies: 3
    • Views: 2,119
    04-26-2016, 08:01 PM Go to last post
  59. question about dataframe and its "number of dimensions"

    Let us say that I have a traditional dataset with genes in the rows and "samples" in the columns. By "samples" I mean the people whose genes were...

    Started by lydiajones94‎, 04-23-2016 10:38 AM
    • Replies: 2
    • Views: 1,137
    04-23-2016, 01:17 PM Go to last post
  60. grep in R

    how do I select 3318 from the following variable name: 20150812_Founds-1_3318_01.RCC vs. Reference ? i know that i should use sub() or...

    Started by lydiajones94‎, 04-22-2016 08:53 PM
    • Replies: 6
    • Views: 1,803
    04-23-2016, 12:40 PM Go to last post

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