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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 10:39 AM
    23 Pages
    1 2 3 ... 23
    • Replies: 340
    • Views: 41,821
    Today, 11:00 AM 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 05:08 AM
    6 Pages
    1 2 3 ... 6
    • Replies: 76
    • Views: 19,869
    02-04-2015, 09:37 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 09:41 AM
    8 Pages
    1 2 3 ... 8
    news
    • Replies: 107
    • Views: 20,592
    11-22-2014, 08:28 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 03:42 PM
    19 Pages
    1 2 3 ... 19
    • Replies: 273
    • Views: 46,267
    10-20-2014, 10:21 AM 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 09:22 AM
    7 Pages
    1 2 3 ... 7
    information
    • Replies: 99
    • Views: 36,584
    05-22-2014, 02:07 AM Go to last post
  6. 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: 6,652
    10-17-2012, 07:20 PM Go to last post
  1. Which programs to download

    For those who are likely to say "this is crazy" 1) you're right and 2) you never worked in a state agency. Basically my agency got approval to...

    Started by noetsi‎, 03-19-2015 03:52 PM
    2 Pages
    1 2
    installing r packages
    • Replies: 24
    • Views: 601
    Today, 11:52 AM Go to last post
  2. Conditional Logistic Regression - help with interpreting results

    Hello there, I have performed a conditional logistic regression in R using the survival package, but I am not certain how to interpret my results...

    Started by Neofelis‎, 03-28-2015 02:40 PM
    • Replies: 10
    • Views: 194
    Today, 09:51 AM Go to last post
  3. Back testing trades in R

    Hi, Id like to do the following in R: I assume to have a series of tick data, say of EURUSD Spot. To keep things simple, I would like to know the...

    Started by randommess‎, Today 09:07 AM
    • Replies: 0
    • Views: 41
    Today, 09:07 AM Go to last post
  4. multivariate garch project

    hello everyone! i'm developing a DCC-GARCH this i the specification of the univariate GARCH that than i'll put in the DCC specification. ...

    Started by tyu90‎, Today 07:40 AM
    • Replies: 0
    • Views: 25
    Today, 07:40 AM Go to last post
  5. makefile knitr

    Ok so I want to make a makefile that will find all .Rmd files and convert them to html files. I have a make file the works but I want to work loop...

    Started by Lazar‎, 02-18-2015 08:07 PM
    html, knitr, make
    • Replies: 4
    • Views: 193
    Today, 07:36 AM Go to last post
  6. [R] environment aware scripting

    I like to create general purpose robust scripts, ones that work regardless (which is also why I aim to use as little packages as possible - having...

    Started by TheEcologist‎, 02-23-2015 09:47 AM
    • Replies: 8
    • Views: 351
    Today, 07:21 AM Go to last post
  7. Estimating fixed vs. random effects with lme (Hausman?)

    I have ran two lme mixed effects models in R, both using the same fixed effects variables but each with a different random effect variable. My...

    Started by samuelle‎, Today 05:52 AM
    fixed effects, hausman, lme, random effects
    • Replies: 0
    • Views: 46
    Today, 05:52 AM Go to last post
  8. Using the Multiple Linear Regression Model to predict values.

    I've used R to create two linear regression models - one level-level and one log-level, from 125 lines of data given to me. I've been told: For...

    Started by elt48‎, 03-27-2015 12:01 PM
    fitted model, linear regression, prediction, rmspe
    • Replies: 5
    • Views: 140
    Today, 05:10 AM Go to last post
  9. DCC-garch forecast and for loop

    Hello everyone! i'm trying to write a for loop with a DCC-garch forecasting. i'm using rmgarch package. how can i develop a for loop on...

    Started by tyu90‎, Yesterday 03:34 AM
    • Replies: 1
    • Views: 55
    Yesterday, 05:51 PM Go to last post
  10. Accept-Reject Method

    I want to generate a random variable X~exponential(1/2) by accept-reject method. f(x)=\frac{1}{2}e^{\frac{-1}{2}x} x\geq0. So I chose...

    Started by askazy‎, 03-28-2015 05:11 PM
    • Replies: 8
    • Views: 151
    03-28-2015, 06:42 PM Go to last post
  11. generate main panel with action button [R-Shiny]

    Hi, I'm not an expert in programing, but I try to build an application with Shiny. You could find the entire code below for a better understanding...

    Started by Cyrille‎, 03-26-2015 05:27 AM
    • Replies: 0
    • Views: 87
    03-26-2015, 05:27 AM Go to last post
  12. CCC and DCC MV-GARCH with R

    Hello, i'm new on R, i'm trying to develop a multivariate GARCH (CCC-GARCH or DCC-GARCH) with Banks's stocks return, Short and long term interest...

    Started by tyu90‎, 03-23-2015 05:08 AM
    • Replies: 2
    • Views: 150
    03-25-2015, 05:56 AM Go to last post
  13. Problem with nlme() convergence in a Monte Carlo simulation

    Hello. As part of a Monte Carlo simulation, I'm programming some model comparisons on generated data. The underlying relationship in the data is...

    Started by CapacitorFluxing‎, 03-16-2015 10:41 PM
    • Replies: 6
    • Views: 303
    03-18-2015, 05:05 AM Go to last post
  14. POSIXct objects in R

    So I have some arrival (and departure) data I wish to look at over the course of a month. I thought it would be best to convert the data to a date...

    Started by Prometheus‎, 03-17-2015 07:57 AM
    • Replies: 0
    • Views: 104
    03-17-2015, 07:57 AM Go to last post
  15. Post Request for feedback on some simple functions

    I'm currently taking the R Programming course as part of the Data Science certificate with Johns Hopkins through Coursera, and I wanted to get some...

    Started by cbtalkstats‎, 03-13-2015 06:29 PM
    • Replies: 8
    • Views: 279
    03-16-2015, 05:14 PM Go to last post
  16. arima() : Not possible to skip an AR Term ???!!!

    Hello. In the following example, you can see, that it is obviosly unfavourable to take the AR(2) and AR(3) term into the model, as the...

    Started by consuli‎, 03-16-2015 11:08 AM
    • Replies: 4
    • Views: 140
    03-16-2015, 02:41 PM Go to last post
  17. Installation does not work

    I am trying to start using R I went to my console and tried to install a new program > install.packages("mice") I get this Warning in...

    Started by noetsi‎, 03-10-2015 03:53 PM
    2 Pages
    1 2
    • Replies: 26
    • Views: 515
    03-16-2015, 12:20 PM Go to last post
  18. [SOLVED] Show distributions, same height different variances

    I want show two distributions on the same pot that have identical height but different variances. I understand logically why my approach below...

    Started by trinker‎, 03-14-2015 12:15 PM
    distribution
    • Replies: 6
    • Views: 254
    03-14-2015, 03:47 PM Go to last post
  19. confused by significance codes in R

    Hello, I am estimating logistic regression models using R. The significance codes used by R is Signif. codes: 0 *** 0.001 ** 0.01 * 0.05 ....

    Started by t.wang21@yahoo.com.au‎, 03-08-2015 06:49 PM
    • Replies: 4
    • Views: 269
    03-14-2015, 06:31 AM Go to last post
  20. P-Values for pacf()

    Hello, I am looking for the p-values for the partial auto-covariance function which is implemented in R as pacf(). Just like cor.test()$p.value...

    Started by consuli‎, 03-13-2015 03:45 PM
    • Replies: 0
    • Views: 75
    03-13-2015, 03:45 PM Go to last post
  21. Difficulty subsetting data

    Hey guys, I am working on a 18 X 70 dataset. I am attempting to isolate 3 cases and 13 variables. Easy enough, however R is being difficult with...

    Started by DRMORRIS‎, 03-12-2015 11:55 AM
    • Replies: 2
    • Views: 148
    03-13-2015, 03:41 PM Go to last post
  22. 3 by 2 factorial, trying to subset by row and column, so simple!

    column 1 values 1, 2, 3 column 2 values 1, 2, 3, 4 column 3 has pairs of responses for each, looking to subset by column 1 then column 2 so I can...

    Started by shoneone‎, 03-12-2015 04:29 PM
    • Replies: 1
    • Views: 165
    03-12-2015, 09:28 PM Go to last post
  23. Multilevel meta-analysis in R using lme4 and lmer

    Dear users, I am running multilevel meta-analyses in R using lme4 and lmer. lmer(effect size ~ -1 + Covariate + (1|StudyID), data = data,...

    Started by KOwen‎, 03-11-2015 04:24 PM
    confidence intervals, lme4, lmer, multilevel meta-analysis, using r
    • Replies: 7
    • Views: 273
    03-12-2015, 08:39 PM Go to last post
  24. How to create different files from 1 file

    Hello everyone. I have a file with 44770 columns and 22 rows. In the 3rd column, I have 31 different atributes and I want create automatically 31...

    Started by Statistician Analyzer‎, 03-12-2015 08:27 AM
    • Replies: 1
    • Views: 121
    03-12-2015, 08:48 AM Go to last post
  25. How to use Anova from package car right

    I have a problem using different ways of ANOVA using R. I read a lot of tutorials how do ANOVA and I also want to do the Huynh-Feldt correction in...

    Started by Flowerpower‎, 03-12-2015 07:07 AM
    anova, anova table, huynh-feldt correction, maulchy test, rcran
    • Replies: 0
    • Views: 121
    03-12-2015, 07:07 AM Go to last post
  26. Random Number Generator

    Hello everyone, I am studying about random numbers generator when the distribution has a cumulative function defined I know use the method of the...

    Started by askazy‎, 03-10-2015 06:24 PM
    • Replies: 1
    • Views: 194
    03-11-2015, 07:47 AM Go to last post
  27. How do I fit 266 unique variables on the x-axis? What's the best graphic?

    I have a .csv file consisting of 1000 rows that I exported from MySQL. I have 266 unique variables in one row. Two questions: 1. How do I make a...

    Started by Poppins‎, 03-09-2015 11:18 AM
    graphics, large graphs
    • Replies: 9
    • Views: 357
    03-10-2015, 01:46 PM Go to last post
  28. Basic Vegan Question. Please Help.

    Hello everyone, I'm an undergraduate thesis student working on analyzing plant data using the vegan package in R. Both my professor and I are...

    Started by trin.invasives‎, 03-10-2015 10:01 AM
    • Replies: 0
    • Views: 162
    03-10-2015, 10:01 AM Go to last post
  29. Reading/converting time series in R

    Hi, I am relatively new to R and struggling with a probably trivial task. My challenge: I want to forecast hourly Power prices. And this is already...

    Started by randommess‎, 03-10-2015 02:57 AM
    forecasting, time series analysis, time series regression
    • Replies: 0
    • Views: 158
    03-10-2015, 02:57 AM Go to last post
  30. 3 Lines Matlab Code to R Code (Generating autocorrelated random values)

    Hello, I have found the following Matlab Code for generating autocorrelated random values, with a defined autocorrelation on lag 1. Source:...

    Started by consuli‎, 03-08-2015 08:19 AM
    autocorrelation
    • Replies: 1
    • Views: 200
    03-09-2015, 07:33 AM Go to last post
  31. K-Means Clustering - Selecting K with Cross Validation of prediction SSE

    I'll try to fill this out more later, but let us just assume we're using the Iris data set. It's not hard to do some clustering x <- iris...

    Started by bryangoodrich‎, 03-05-2015 07:11 PM
    • Replies: 8
    • Views: 328
    03-08-2015, 04:00 AM Go to last post
  32. Conversion function: Managing multiple matches

    Hi All, I have the following occupational status conversion code table https://dl.dropboxusercontent.com/u/17190019/sesconversionTable.csv What...

    Started by Lazar‎, 03-05-2015 06:55 PM
    • Replies: 8
    • Views: 281
    03-06-2015, 07:44 AM Go to last post
  33. Bugman: Knitr example of gVisPlot

    Here is an example of a motion chart: --- title: "My Awesome Plot" author: "Lazar" date: "16 February 2015" output: html_document --- ...

    Started by Lazar‎, 03-05-2015 05:07 PM
    • Replies: 3
    • Views: 143
    03-05-2015, 06:44 PM Go to last post
  34. I'm a newb to charts, graphs, and R --Ubuntu 14.04, Rstudio, MySQL, CSV files, Data

    Hi guys, I just wrote an introduction with a couple of reasons as to why I am here. Reason 1 is that I'm not sure where the divide is between big...

    Started by Poppins‎, 03-05-2015 12:15 PM
    big data, hadoop, mysql, nlp, rstudio
    • Replies: 0
    • Views: 147
    03-05-2015, 12:15 PM Go to last post
  35. NAs introduced by coercion

    hii, I am trying to plot a 3d-scatter graph , but it shows the error: Warning in xyz.coords(x, y, z, xlab = xlabel, ylab = ylabel, zlab = zlabel,...

    Started by kavita‎, 03-02-2015 02:34 AM
    • Replies: 2
    • Views: 235
    03-04-2015, 03:04 PM Go to last post
  36. >Hist problem

    Hello all ;) (am i on the good part of forum? sorry if i didn't i will change that) I have a problem to make my hist, if you could help i would be...

    Started by Elca2‎, 03-03-2015 07:13 PM
    • Replies: 7
    • Views: 256
    03-03-2015, 09:43 PM Go to last post
  37. For Bugman: Adding twitter bootstrap styling to Rmarkdown files

    I know this is not exactly what you want BUT this will: a) give tables that stretch across the page and are responsive b) there is heaps of...

    Started by Lazar‎, 03-03-2015 06:47 PM
    • Replies: 6
    • Views: 219
    03-03-2015, 09:08 PM Go to last post
  38. Boxplot

    Hello all! I have come across a very simple problem, but am unable to solve it :( In a boxplot, I am trying to set the scale of the y-axis: >...

    Started by RodeLoper‎, 03-03-2015 08:10 AM
    • Replies: 1
    • Views: 175
    03-03-2015, 08:41 AM Go to last post
  39. r command to maintain order of the common field and getting filename in the header

    Friends, I got the following code for combining multiple csv files in a particular folder, now its combining but only problem is its not...

    Started by eswari‎, 02-25-2015 02:16 AM
    • Replies: 1
    • Views: 192
    03-01-2015, 09:35 PM Go to last post
  40. [SOLVED] Set up labels of stacked bar charts created with lattice

    I already asked about this on stackoverflow.com, but no one answered yet. Some time ago I solved to put labels as percentages in stacked bar...

    Started by Iurie‎, 02-27-2015 02:38 AM
    gnu r, lattice, stacked bar charts
    • Replies: 2
    • Views: 209
    03-01-2015, 10:02 AM Go to last post
  41. Time series analysis 95% interval

    I want to compute a 95% interval and i use this code (my book tells me to use this) myforecast=predict (univariatemodel3, n.ahead = 10)...

    Started by studentbelg‎, 02-28-2015 10:42 AM
    • Replies: 1
    • Views: 170
    02-28-2015, 12:49 PM Go to last post
  42. rmarkdown question

    So, I mentioned I was trying to learn rmarkdown and I have had some success, but run into a problem when selecting knitr - pdf. Running the basic...

    Started by bugman‎, 02-27-2015 06:27 PM
    • Replies: 1
    • Views: 213
    02-27-2015, 06:29 PM Go to last post
  43. summarySE error in R-Studio

    I have just tried to use the summary SE function in R-studio. Apparently this is a known, but by the looks, unresolved issue: ...

    Started by bugman‎, 02-25-2015 10:32 PM
    • Replies: 0
    • Views: 183
    02-25-2015, 10:32 PM Go to last post
  44. Which statistical test to use: 1000 pairs of ordinals

    Hello, I have a table of approximately 1000 pairs of values. x is an integer between 0 and 365, representing birthday y is an integer between...

    Started by sevenquid‎, 02-12-2015 02:00 PM
    coefficient significance, correlation, hypothesis, spearman's rank, test
    • Replies: 2
    • Views: 283
    02-25-2015, 05:04 PM Go to last post
  45. Powermap equivalent for R?

    I was blown away by Excel 365's Powermap capabilities: https://www.youtube.com/watch?v=CoeL3_5M2zA They change the map's projection on the fly,...

    Started by mexindian‎, 02-25-2015 08:57 AM
    bar, globe, map
    • Replies: 0
    • Views: 135
    02-25-2015, 08:57 AM Go to last post
  46. Red face how to combine multiple csv files in R using a common column in all the files?

    Hello Hello Everyone, please help me to write a code in combining multiple csv files in R using a common column in all the files( but diff no.of...

    Started by eswari‎, 02-21-2015 06:10 AM
    • Replies: 5
    • Views: 340
    02-25-2015, 02:18 AM Go to last post
  47. Kruskal-Wallis test in R: help with interpreting results

    Hi all, I have a question about the results of the Kruskal-Wallis test in R. I'm not sure what exactly the results mean, or how the test analyzed...

    Started by Neofelis‎, 02-24-2015 06:50 PM
    • Replies: 3
    • Views: 199
    02-24-2015, 08:09 PM Go to last post
  48. Automating VIF calculation on mutliple linear models

    I came up with this code to calculate VIF for variables for each model I am evaluating displayvif<-function(x){ for (i in 1:length(x)) ...

    Started by excelmac‎, 02-24-2015 05:58 PM
    loops, multicollinearity, regression analysis, vif
    • Replies: 0
    • Views: 133
    02-24-2015, 05:58 PM Go to last post
  49. path analysis using lavaan

    Dear all, I am running a path analysis with a binary dependent variable using lavaan. I specified the model to use the "logit" function, and...

    Started by natoe‎, 02-23-2015 06:43 AM
    • Replies: 3
    • Views: 213
    02-24-2015, 10:31 AM Go to last post
  50. R Software/ Basic Row Calculations

    Hello Talk Stats R Forum Board : ) I am migrating from Excel to R and want to see how create a new column, "z", that would total up the rows...

    Started by R2015‎, 02-22-2015 01:35 PM
    • Replies: 3
    • Views: 276
    02-23-2015, 11:34 PM Go to last post
  51. Importing data into R from teh internetz?

    hi! for an assignment i need to import the data set found here: https://archive.ics.uci.edu/ml/machine-learning-databases/wine/wine.data into...

    Started by spunky‎, 02-18-2015 11:42 PM
    • Replies: 11
    • Views: 435
    02-23-2015, 10:55 PM Go to last post
  52. dunn.test

    Hi everyone!! I'm quite new with R, so I hope you can help me :) I'm working with bacteria pyrosequencing data and I'm doing the statistical...

    Started by Lidia_N‎, 02-23-2015 03:18 AM
    dunn.test, kruskal-wallis, sequence data
    • Replies: 2
    • Views: 185
    02-23-2015, 07:53 AM Go to last post
  53. regsubset function in R

    I'm using regsubset for variable selection but when i specify nvmax to a given value lets say 2, it regresses 3 variables instead of 2. Does anyone...

    Started by excelmac‎, 02-20-2015 07:01 PM
    regsubsets
    • Replies: 0
    • Views: 175
    02-20-2015, 07:01 PM Go to last post
  54. venn diagrams and par

    Hi. I am using the VennDiagram package to draw some venn diagrams. However, i want to draw multiple diagrams in the same plot, using par(mfrow ...)...

    Started by merik‎, 02-20-2015 11:27 AM
    • Replies: 0
    • Views: 130
    02-20-2015, 11:27 AM Go to last post
  55. Very elementary question

    Hello all, I'm very new to R. I'm working on a small research project with my hospital that is only using basic descriptive statistics. I decided to...

    Started by ahimsel‎, 02-20-2015 07:00 AM
    • Replies: 0
    • Views: 120
    02-20-2015, 07:00 AM Go to last post
  56. Question R

    Hi, I'm wondering about, how to view the contents/codes in a saved R -workspace sometime back??

    Started by Dhaneesh‎, 02-19-2015 04:33 AM
    • Replies: 4
    • Views: 226
    02-20-2015, 06:38 AM Go to last post
  57. a stupid question about marginal effects of logit model in R

    Hello, I am estimation logistic regression models in R and the results also include marginal effects. given the nonlinear relation between the...

    Started by t.wang21@yahoo.com.au‎, 02-15-2015 07:52 PM
    • Replies: 7
    • Views: 356
    02-19-2015, 11:24 PM Go to last post
  58. Merging Data Into Raster Image

    Hey there, I need a little help with some R syntax to complete what (I think) is a fairly straightforward task- hopefully someone can assist! :) ...

    Started by starr15‎, 02-19-2015 03:16 AM
    • Replies: 0
    • Views: 123
    02-19-2015, 03:16 AM Go to last post
  59. Merge to dataframes in R

    In SAS i use this code to merge two datasets with more than one BY variable and to keep all elements from a-dataset that are not in the b-dataset ...

    Started by dezo_pp‎, 02-19-2015 02:57 AM
    • Replies: 0
    • Views: 119
    02-19-2015, 02:57 AM Go to last post
  60. SEM in R - Comparison of groups across variables

    Hello, I am to compare several groups (depressed, bipolar, and controls) on many variables and I was advised to use SEM in R. I am teaching myself...

    Started by sams garden‎, 02-18-2015 08:23 AM
    • Replies: 1
    • Views: 184
    02-18-2015, 04:47 PM Go to last post

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