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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
    25 Pages
    1 2 3 ... 25
    • Replies: 362
    • Views: 142,512
    01-04-2017, 10:39 PM Go to last post
  2. 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 06:08 AM
    9 Pages
    1 2 3 ... 9
    • Replies: 120
    • Views: 58,348
    12-13-2016, 05:47 PM Go to last post
  3. 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 10:41 AM
    8 Pages
    1 2 3 ... 8
    news
    • Replies: 110
    • Views: 54,528
    10-05-2016, 08:33 AM Go to last post
  4. 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 04:42 PM
    20 Pages
    1 2 3 ... 20
    • Replies: 286
    • Views: 126,110
    09-13-2016, 04:35 PM Go to last post
  5. 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 10:22 AM
    7 Pages
    1 2 3 ... 7
    information
    • Replies: 100
    • Views: 68,108
    04-14-2016, 02:02 PM Go to last post
  6. 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: 1
    • Views: 3,882
    02-02-2016, 05:41 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 08:20 PM
    • Replies: 0
    • Views: 14,669
    10-17-2012, 08:20 PM Go to last post
  1. IV Regression with binary outcome

    I have a binary variable y which I am aiming to model using instrumental variable regression. Both X and the IV are continuous. ivpak in R does not...

    Started by Lazar‎, 01-16-2017 11:32 PM
    instrumental variables
    • Replies: 6
    • Views: 193
    Today, 09:58 AM Go to last post
  2. how to predict which variable has the highest good/bad impact on my result?

    ...continuing on my machine learning journey here. So I know the method of finding the best algorithm to build a model (i,e cross validation, test,...

    Started by semidevil‎, 01-06-2017 04:00 PM
    • Replies: 5
    • Views: 267
    01-15-2017, 02:48 PM Go to last post
  3. Subset based on missing in differnet variables

    Suppose I have credit ratings for 5 years (credit1, credit2, credit3, credit4, credit5). I only want to keep observations which have at least three...

    Started by leonedelman‎, 01-14-2017 08:32 AM
    drop, r program, subset
    • Replies: 1
    • Views: 130
    01-15-2017, 12:39 PM Go to last post
  4. Question How can I make a decision tree in R?

    Hi, I'm a R beginner. I want to make a desicion tree. I tried a lot of tutorials, but none of it work, because my data is other than the data in...

    Started by Jeti‎, 01-13-2017 08:18 AM
    • Replies: 4
    • Views: 137
    01-13-2017, 10:29 AM Go to last post
  5. Density plot 3d for clustering

    Good morning everybody. I want to ask you if it is possibile to build a 3d density plot in order to show the density of a cluster, having the scores...

    Started by Ferdinando Coppola‎, 01-13-2017 04:54 AM
    3d plot, clustering
    • Replies: 0
    • Views: 80
    01-13-2017, 04:54 AM Go to last post
  6. ANOVA - 2 factors with interaction

    Hi, I'm writing you because I need some help to resolve a statistical problem... I study two populations that gather individuals (n=2x80)...

    Started by SPR369‎, 01-12-2017 04:44 AM
    • Replies: 3
    • Views: 134
    01-13-2017, 03:46 AM Go to last post
  7. Link = log code won't work

    Hi, doing a generalised linear model with poisson distribution, here is my model code... ...

    Started by whyisstatssohard‎, 01-11-2017 09:15 AM
    generalised linear models, generalized linear model, glm, link function, poisson distribution
    • Replies: 2
    • Views: 149
    01-11-2017, 05:27 PM Go to last post
  8. General and generalised linear models

    Hi, I've done a few GLM's with poisson distribution, the code I've used is ...

    Started by whyisstatssohard‎, 01-09-2017 06:34 PM
    general linear model, generalised linear models, glm, glm assumptions, glm diagnostocs
    • Replies: 1
    • Views: 144
    01-09-2017, 07:29 PM Go to last post
  9. Statistical difference from Shannon Wiener and Simpson Indices

    Hello there, I am struggling to compare the results of the Shannon Wiener Index between two seasons. I have done the indices between camera trap...

    Started by Nas‎, 01-07-2017 03:25 PM
    • Replies: 1
    • Views: 209
    01-07-2017, 03:52 PM Go to last post
  10. Possible to create GUI applications in HTML with R in background

    Hello. Is it possible to create a GUI application by using R in background? I need to create some GUI with graphs, buttons, checkboxes and I have...

    Started by Volvo742‎, 01-06-2017 09:26 PM
    • Replies: 2
    • Views: 181
    01-07-2017, 02:34 PM Go to last post
  11. suggestions on improving my predictive model

    I'm playing with some data from the UCI repository. I got an algorithm going here, but I'm wondering if there is any other way to improve it. Looking...

    Started by semidevil‎, 01-06-2017 04:57 PM
    • Replies: 1
    • Views: 157
    01-07-2017, 04:09 AM Go to last post
  12. Dividing a dataset into groups

    allright this should be pretty simple, i have a dataset containing around 4000 entries, each of these entries has a column called "age" with values...

    Started by kobun‎, 01-06-2017 01:14 PM
    • Replies: 1
    • Views: 116
    01-06-2017, 02:13 PM Go to last post
  13. How to do an actual prediction in R.

    I'm going through a machine learning book and I understand all the steps to finding the best algorithm(preprocessing, cross validation, tuning,...

    Started by semidevil‎, 12-31-2016 11:31 AM
    • Replies: 4
    • Views: 379
    01-06-2017, 12:30 PM Go to last post
  14. Prediction and Poisson

    I have been set the tast of running a Poisson regression and then using the predict command to predict the number of visits to the doctors per age...

    Started by sarahharding‎, 01-05-2017 10:10 AM
    predict function
    • Replies: 0
    • Views: 124
    01-05-2017, 10:10 AM Go to last post
  15. Multinomial logistic regression

    Hi, I'm quite new to R and I need a little advise on whether multinomial logistic regression is right for what I'm hoping to do for my data....

    Started by whyisstatssohard‎, 12-29-2016 04:39 PM
    data analysis, help needed, logisitic regression, multinomial regression
    • Replies: 14
    • Views: 590
    01-05-2017, 10:03 AM Go to last post
  16. Precalculated error bars in barplot

    Hi all A basic question, but having trawled the net, I cannot find an answer! I'm using barplot in R to plot the mean value that I have for 15...

    Started by JRS‎, 12-29-2016 05:04 PM
    • Replies: 1
    • Views: 190
    12-30-2016, 11:13 AM Go to last post
  17. How to included R code into an academic paper

    I'm wondering if somebody could advise me in how to include R code into an academic paper? Should I include the code as text or as a figure? ...

    Started by bikingman‎, 12-22-2016 06:48 PM
    • Replies: 3
    • Views: 439
    12-30-2016, 07:53 AM Go to last post
  18. Estimated marginal means (+/-SE) in mixed-effect model for two or more fixed effects

    After specifying a mixed-effect model (using lme4 package) with 2+ fixed factors, for example: model = lmer(DV ~ facA * facB + (1|subject),...

    Started by Martin Marko‎, 12-29-2016 08:15 AM
    mixed effect
    • Replies: 0
    • Views: 148
    12-29-2016, 08:15 AM Go to last post
  19. Post hoc ANCOVA question regarding multiple comparison

    Hello everybody! I am doing a PhD thesis on impact of habitat on fish condition. I am comparing three regression lines by testing the effect of...

    Started by Ilanius‎, 12-28-2016 03:27 PM
    • Replies: 0
    • Views: 158
    12-28-2016, 03:27 PM Go to last post
  20. how to fix: Something is wrong; all the RMSE metric values are missing:

    I'm practicing with the Caret Package in doing a GLM training for the bostonhousing data, from the mlbench package. However, when I run my cross...

    Started by semidevil‎, 12-27-2016 04:16 PM
    • Replies: 0
    • Views: 198
    12-27-2016, 04:16 PM Go to last post
  21. JAGS error: Node inconsistent with parents

    I am trying to apply Benedict Escoto's method from the paper "Bayesian Claim Severity with Mixed Distributions," published in Variance. I seem to be...

    Started by Alp Can‎, 12-27-2016 09:37 AM
    jags
    • Replies: 0
    • Views: 161
    12-27-2016, 09:37 AM Go to last post
  22. creating a vector of integers from c(3,2,4) to c(6,5,9)

    Let's say I have an integer vector of starting positions and an integer vector of ending positions that is the same length, and I want to make one...

    Started by efoss‎, 12-16-2016 10:24 PM
    • Replies: 3
    • Views: 428
    12-17-2016, 11:22 AM Go to last post
  23. Oneway test post hoc processing HELP beginner

    Hi, I am stuck with an exercise I have to do regarding one-way anova. The exercise gives you 4 vectors, a,b,c & d. It asks to run these 2 tests:...

    Started by dieselonthecouch‎, 12-17-2016 07:02 AM
    • Replies: 0
    • Views: 215
    12-17-2016, 07:02 AM Go to last post
  24. Retrieve PE, PEG and Dividend Yield of Hong Kong HangSeng Index through R Quantmod

    Hi All, I seek for advice on how to retrieve PE, PEG and Dividend Yield of Hong Kong HangSeng Index or particular stock (such as 0005.HK) through...

    Started by HenryWai‎, 12-14-2016 12:51 PM
    quantmod
    • Replies: 0
    • Views: 272
    12-14-2016, 12:51 PM Go to last post
  25. Parallel boxplots of all quantitative variables in mtcars data set?

    Does anyone know how to do this? I know how to display boxplots of individual variables such as, and I'll stay in the mtcars data set: ...

    Started by DV Man‎, 12-12-2016 03:25 PM
    • Replies: 2
    • Views: 482
    12-12-2016, 05:55 PM Go to last post
  26. Want to use mutate with two different data sets in dplyr

    Like before, my data sets are too large, so I will try my hand again at a reproducible example. t <- data.frame( Season = c(1985,...

    Started by DV Man‎, 12-11-2016 09:18 PM
    • Replies: 5
    • Views: 307
    12-11-2016, 11:40 PM Go to last post
  27. Sequential numbering for each month on a period of time

    Hi All, I am a beginner in R. I have a period of dates in my data set starting 10th April'2006 till 31st Aug'2016. Its a period of 125 months....

    Started by kbsudhir‎, 12-06-2016 01:03 PM
    • Replies: 4
    • Views: 391
    12-11-2016, 11:21 PM Go to last post
  28. Want to merge data frames, do I use match?

    I have the following dataset, which I will attach in a PDF due to a character restraint, and want to match its condition (ISO >= .163) with all age...

    Started by DV Man‎, 12-10-2016 04:00 PM
    • Replies: 8
    • Views: 406
    12-11-2016, 07:18 AM Go to last post
  29. Vungle Project

    I am working on my final project for my Data Analysis class, where I have to give a presentation. I have been given a dataset, called Vungle. Here it...

    Started by DV Man‎, 12-03-2016 02:11 PM
    • Replies: 13
    • Views: 613
    12-08-2016, 08:39 PM Go to last post
  30. Which type of graphs should I use to illustrate results for a paired t-test?

    I have a paired t-test, and am having trouble picking what graphs to use to illustrate some results for my presentation. Here is my data: vungle...

    Started by DV Man‎, 12-07-2016 03:20 PM
    • Replies: 13
    • Views: 452
    12-08-2016, 08:59 AM Go to last post
  31. Question [Help] Simple Markov Switching Model script?

    Hello everyone! I currently am looking for a way to analyze data using a Markov Switching Model, yet I am a complete idiot when it comes to...

    Started by shabada‎, 12-07-2016 10:45 AM
    • Replies: 0
    • Views: 213
    12-07-2016, 10:45 AM Go to last post
  32. Error in `[.data.frame`(x, xok) : undefined columns selected

    Here is my data vungle <- structure(list(Strategy = structure(c(1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,...

    Started by DV Man‎, 12-07-2016 08:25 AM
    • Replies: 2
    • Views: 226
    12-07-2016, 09:14 AM Go to last post
  33. Loops and Conditions with a Data Frame

    Hello all, I am moving from SAS to R, and getting a few difficulties. I have a data frame called DF. It contains 3 variables (see attached...

    Started by Yankel‎, 12-03-2016 04:40 AM
    • Replies: 6
    • Views: 506
    12-06-2016, 02:51 AM Go to last post
  34. Help! How do I fit this multinomial logistic regression model?

    Hello! I wanted to ask for help with an investigation that I am carrying out. I am trying to find if ethnicity is the most determinant factor of...

    Started by marimo22‎, 12-03-2016 09:08 AM
    • Replies: 0
    • Views: 296
    12-03-2016, 09:08 AM Go to last post
  35. R equivalent code from Stata code on regression.

    Hi, I am trying to run these stata codes into R. I have never before used stata before, so I am confused on how to transform it in R. I was...

    Started by sandyzman‎, 12-02-2016 11:02 PM
    • Replies: 0
    • Views: 217
    12-02-2016, 11:02 PM Go to last post
  36. R package (doSNOW)masking objects

    I am trying to do a simulation analysis. The code was running alright with small sample. For the full run, I ran into the following error at first. I...

    Started by thomashaosun‎, 12-02-2016 03:30 AM
    • Replies: 1
    • Views: 249
    12-02-2016, 07:37 AM Go to last post
  37. Mapping Shape files in R

    Hello, I would like to know if there's a way to convert Shape_Area and Shape_Length data to geo lat/long coordinates because I have a way to map...

    Started by iknowu99‎, 11-29-2016 11:33 AM
    • Replies: 0
    • Views: 297
    11-29-2016, 11:33 AM Go to last post
  38. AR(1)-ARCH(1) modeling

    I don't really know if this is the right place to ask for this, but maybe someone could guide me on the process of fitting AR(1)-GARCH(1) model in R....

    Started by lovetim‎, 11-28-2016 11:22 PM
    arch
    • Replies: 0
    • Views: 280
    11-28-2016, 11:22 PM Go to last post
  39. How to generalize these basic steps with vectorization techniques?

    df <- data.frame( amount=rnorm(100,1000,50), class=sample(1:10,10), year=rep(2013:2016, 25) ); head(df) #trying to generalize...

    Started by databuilder‎, 11-20-2016 11:16 PM
    • Replies: 6
    • Views: 677
    11-28-2016, 10:17 AM Go to last post
  40. How to use chi-square test correspondence between features and response in R?

    There is a set of tumors,each one includes five features, which relate to one gene type result. Tumor Feature 1 ... Feature 5 Gene type 1 Type 1...

    Started by l35633‎, 11-27-2016 03:13 PM
    chi-square
    • Replies: 0
    • Views: 257
    11-27-2016, 03:13 PM Go to last post
  41. What is an AIC in R, and what is a "good" one?

    I am doing the Titanic Kaggle problem (has anyone done this?) and I have this output from a logistic regression model: Call: glm(formula =...

    Started by DV Man‎, 11-22-2016 01:42 PM
    • Replies: 6
    • Views: 414
    11-23-2016, 02:30 AM Go to last post
  42. Question How can I insert value in a phrase

    Hello everyone! I started learning R since last September in my grad program, and also teaching myself functions that I do not learn in the...

    Started by shin1990‎, 11-20-2016 02:10 PM
    • Replies: 2
    • Views: 342
    11-20-2016, 03:59 PM Go to last post
  43. Cox Snell residuals in R

    I'm trying to fit parametric survival models for a data that I have, and I don't know how to get the Cox Snell residuals in R. An example of...

    Started by askazy‎, 11-19-2016 07:45 AM
    • Replies: 0
    • Views: 302
    11-19-2016, 07:45 AM Go to last post
  44. PCA for Compositional Data using R

    Good evening! As the title suggest, I'm approaching to PCA for compositional Data. The dataset is about 5200 proteins for which is recorded a value...

    Started by Ferdinando Coppola‎, 11-16-2016 12:32 PM
    biplot, compositional data, pca
    • Replies: 2
    • Views: 522
    11-18-2016, 03:30 AM Go to last post
  45. Creating a boxplot with a data frame

    I have the following dataset: > dput(twins) structure(list(Foster = c(82L, 80L, 88L, 108L, 116L, 117L, 132L, 71L, 75L, 93L, 95L, 88L, 111L,...

    Started by DV Man‎, 11-14-2016 08:46 AM
    • Replies: 3
    • Views: 437
    11-16-2016, 08:26 AM Go to last post
  46. Guitarpackage in R

    Hi! I am fairly new to R, and have been trying to run R's Guitar package on my linux with not much success. No image is generated - I get an error...

    Started by blur‎, 11-16-2016 06:47 AM
    guitar package r
    • Replies: 1
    • Views: 273
    11-16-2016, 07:55 AM Go to last post
  47. Point size base plots

    So cex with scale points and defaults to 1 being 1px. Is there a way however to link the diameter of points to the y-axis. So lets say we have: ...

    Started by Lazar‎, 11-12-2016 04:56 PM
    • Replies: 5
    • Views: 455
    11-13-2016, 12:24 AM Go to last post
  48. Don't understand why it needs to be class factor

    I have the following piece of code which I am trying to run library(Rcmdr) library(RcmdrMisc) library(RcmdrPlugin.DoE) PB.DOE <- pb(nruns= 12...

    Started by anonake‎, 11-10-2016 02:10 PM
    regression
    • Replies: 0
    • Views: 383
    11-10-2016, 02:10 PM Go to last post
  49. Error: unexpected string in constant

    Hi All, apologies for the basic question but I'm a newbie in R and I can't seem to fix this one line of code. I'm inputting; awk '$1 ==...

    Started by Magpie101‎, 11-10-2016 05:58 AM
    error
    • Replies: 1
    • Views: 343
    11-10-2016, 01:10 PM Go to last post
  50. Complex line graphic

    Hello everyone, :D I am trying to do a graph with the enclosed file. In ordinate I want to represent the mutation rate mu for the three types...

    Started by Bioinfo974‎, 11-06-2016 07:41 PM
    • Replies: 5
    • Views: 463
    11-09-2016, 03:26 AM Go to last post
  51. Online R coding tuition

    Hi guys, i'm new to R and have some biological data sets I need help coding with, is there anyone on here that is able to give online tuition in...

    Started by imbricata‎, 11-07-2016 05:28 AM
    • Replies: 1
    • Views: 374
    11-07-2016, 07:36 AM Go to last post
  52. Adding Text to Horizontal Line in GGPlot2

    So I made this barplot, and I have a horizontal line at the mean of the wholesale price of all cars. I would like to add text to this line to denote...

    Started by DV Man‎, 10-30-2016 09:24 PM
    • Replies: 12
    • Views: 616
    11-06-2016, 05:48 PM Go to last post
  53. Factorial ANOVA, How to do a imple effects analysis in R?

    I am running a factorial ANOVA in R. I want to find out the effect of gender and the semester the student is enrolled in on a standardized test. ...

    Started by ricardo.l‎, 11-06-2016 10:57 AM
    • Replies: 0
    • Views: 311
    11-06-2016, 10:57 AM Go to last post
  54. Help with Rstudio coding

    Hi guys I really need some help with the coding for a linear model with Gaussian error structure to assess whether a numerical variable is affected 2...

    Started by imbricata‎, 11-06-2016 10:31 AM
    • Replies: 0
    • Views: 280
    11-06-2016, 10:31 AM Go to last post
  55. What wrong with my code?

    I am running a DOE where i have generated a PB design. This ends up as a data table with my predictor variables and the experiments I need to run to...

    Started by anonake‎, 11-03-2016 09:06 AM
    calculated column, r code
    • Replies: 9
    • Views: 567
    11-05-2016, 05:56 PM Go to last post
  56. Presence/Absence Data - (Dis)similarity Analysis in R

    Hi everyone, I could not find a thread which matches my problem sufficiently. If I missed the right thread you are welcome to give me short hint....

    Started by anutinashell‎, 10-28-2016 09:20 AM
    • Replies: 4
    • Views: 451
    11-04-2016, 03:35 AM Go to last post
  57. MLE parameter estimation error in R for Exponential Distribution

    I am doing a statistical modeling and doing right and left censoring. I have difficulty to fit my data to exponential distribution as I am getting...

    Started by mohsenhs82‎, 11-03-2016 03:06 AM
    censoring, exponential distribution, fit distribution, fitdistplus
    • Replies: 0
    • Views: 308
    11-03-2016, 03:06 AM Go to last post
  58. replacing 4 or more characters 'j' in a string with the same number of characters 'y'

    Let's say I have a string a <- 'jjjaaaabbbjjjjcccccddjjjjjjjjeeejjffjjjjjjgg' I want to replace all instances of the character 'j' with an...

    Started by efoss‎, 11-01-2016 11:24 PM
    • Replies: 3
    • Views: 402
    11-02-2016, 01:40 AM Go to last post
  59. Recoding Data

    Hi guys! This seems like an easy enough topic...but I CANNOT find it anywhere on the internet. I'm probably looking in all the wrong places so I...

    Started by gene2420‎, 08-15-2014 05:21 PM
    • Replies: 6
    • Views: 954
    11-01-2016, 04:18 PM Go to last post
  60. How to combine multiple variables into one by name

    I have the following dataset: class = c("tbl_df", "tbl", "data.frame"), row.names = c(NA, -121690L), .Names = c("Model", "Make", "Color",...

    Started by DV Man‎, 10-30-2016 12:25 PM
    • Replies: 9
    • Views: 411
    10-30-2016, 03:02 PM Go to last post

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