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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: 271,121
    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: 112,248
    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: 13,549
    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: 117,265
    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: 256,818
    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: 124,675
    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: 26,216
    10-17-2012, 07:20 PM Go to last post
  1. Question about Kolmogorov-Smirnov Test in R

    Hi all, I'm a bit confused about the way handles the Kolmogorov-Smirnov test for comparing two distributions. From what I know about the K-S test,...

    Started by eugeneby‎, 08-05-2015 01:19 PM
    kolmogorov-smirnov, ks.test
    • Replies: 0
    • Views: 996
    08-05-2015, 01:19 PM Go to last post
  2. R: Do I need to change factors to dummies?

    Hello everyone, I am planning to do an analysis with time series data where the dependent variables are mostly factors in R, ranging from 2 to 164...

    Started by Charlotte010‎, 05-29-2015 06:22 AM
    • Replies: 1
    • Views: 1,373
    08-05-2015, 01:12 PM Go to last post
  3. Export crosstab to xls/txt/csv file?

    Hi I recently run a simple tabulate with crosstab as this shows you crosstab(var1,var2,varweigth) But i can't export to any kind of output file....

    Started by jfca283‎, 07-23-2015 03:29 PM
    • Replies: 9
    • Views: 2,293
    08-05-2015, 01:05 PM Go to last post
  4. Manipulating specific index numbers in a list

    Hi, So I have a giant list of data (1000s of rows long) I just need to carry out a simple mathematical operation of multiplying all coefficients...

    Started by TheK9E‎, 08-05-2015 11:30 AM
    • Replies: 3
    • Views: 1,221
    08-05-2015, 11:50 AM Go to last post
  5. "getVarCov" in lme

    Is "getVarCov" of lme output gives variance-covariance of estimated "Standard Deviation" of random effects or variance-covariance of estimated...

    Started by Cynderella‎, 08-04-2015 11:45 AM
    lme, mixed effects model, nlme, r help
    • Replies: 0
    • Views: 849
    08-04-2015, 11:45 AM Go to last post
  6. How is to define the lme model syntax .

    The following model assumes that the covariance between the random intercepts and random slopes across Subjects is Zero . lmer(Reaction ~ Days +...

    Started by Cynderella‎, 08-04-2015 06:59 AM
    lme, lme random-effect, mixed effects model, r code help, random effects model
    • Replies: 0
    • Views: 896
    08-04-2015, 06:59 AM Go to last post
  7. spell check large document R

    I have a large corpus I want to data mine but I want to spell check it first. What I specifically want is the spell checker to automatically correct...

    Started by Lazar‎, 08-03-2015 11:54 PM
    • Replies: 0
    • Views: 1,496
    08-03-2015, 11:54 PM Go to last post
  8. Package Installation problem

    I installed lavaan with no problem. Then when I did a library statement I get Error in loadNamespace(j <- i], c(lib.loc, .libPaths()),...

    Started by noetsi‎, 08-03-2015 09:49 AM
    • Replies: 11
    • Views: 2,516
    08-03-2015, 11:18 PM Go to last post
  9. Specifying the variance component model "varComp" in R .

    I am trying to fit a random slope model by "varComp" in R . For the following example , that is in "lmer" syntax , how can I write it in "varComp"...

    Started by Cynderella‎, 08-03-2015 09:03 PM
    mixed effects model, multilevel, r code help, r help, random effects model
    • Replies: 0
    • Views: 1,128
    08-03-2015, 09:03 PM Go to last post
  10. translate the SAS code to r code

    Hi, is there anyone can help me translate the SAS code to r code. Thank you very much! %let product_list = 1 2 3 4 5 6; %let...

    Started by Chenj‎, 08-03-2015 03:34 PM
    • Replies: 0
    • Views: 1,166
    08-03-2015, 03:34 PM Go to last post
  11. Plot estimated and observed lines - Cox regression

    Hi all I'm new here. I've been searching for a method to plot an estimated value through cox regression model and the observed value together....

    Started by Cheung02‎, 08-03-2015 10:10 AM
    • Replies: 0
    • Views: 1,186
    08-03-2015, 10:10 AM Go to last post
  12. Making a Reaction Stoichiometry Matrix

    Hey, I am really new to coding and using R. I have been provided with this parsing code so far ## Open R ## Load source code (file --> souce R...

    Started by TheK9E‎, 07-31-2015 05:55 PM
    • Replies: 0
    • Views: 759
    07-31-2015, 05:55 PM Go to last post
  13. Put x axis in correct order

    Hello guys, I am having problem in r, as you can see, my data starts from November 2014. It ends at July 2015. However if i plot it in graph. It...

    Started by Mr Good News‎, 07-30-2015 10:07 PM
    • Replies: 5
    • Views: 2,096
    07-31-2015, 10:44 AM Go to last post
  14. Converting Categorical Columns into Multiple Binary Columns in R

    I am trying to convert a column that has categorical data ('A', 'B', or 'C') to 3 columns where 1,0,0 would be 'A'; 0,1,0 would represent 'B', etc. ...

    Started by atomant‎, 07-30-2015 04:24 PM
    neuralnet
    • Replies: 2
    • Views: 2,311
    07-30-2015, 05:26 PM Go to last post
  15. Interpretation of various output of "lmer" function in R

    library(lme4) fm1 <- lmer(Reaction ~ Days + (Days | Subject), sleepstudy) The notation `(Days | Subject)` says to allow the intercept and...

    Started by Cynderella‎, 07-27-2015 12:05 AM
    lmer, mixed effects model, multilevel model, random effects model, variance components
    • Replies: 5
    • Views: 3,386
    07-30-2015, 09:55 AM Go to last post
  16. Frequency table and plots for bird observations

    Hi, It's been several years since I last used R and I have what I hope is a simple problem. I am helping to create frequency plots of bird...

    Started by rgilson‎, 07-30-2015 08:18 AM
    frequency
    • Replies: 1
    • Views: 1,570
    07-30-2015, 09:16 AM Go to last post
  17. Post Getting variable names of desired values

    Hi, My data (group) has 300 variables showing which group it belong to in the second row..There are a total of 6 groups ...

    Started by maisarah‎, 07-30-2015 05:54 AM
    • Replies: 2
    • Views: 1,660
    07-30-2015, 07:29 AM Go to last post
  18. Confidence interval of parameters of mixed-model in R

    Hi , can anyone please explain me the following output produces in `R` when I ran the command `confint(lmer())` . Here is the R code : ...

    Started by Cynderella‎, 07-24-2015 10:52 PM
    confidence interval, lmer, mixed model, r output, variance components
    • Replies: 4
    • Views: 3,773
    07-30-2015, 01:16 AM Go to last post
  19. but ther's a decent progress bar?

    in R-Rstudio? ther're many that works in *for* loops that finally are unnecessary...are toys... ther's a decent package that monitor low level c++...

    Started by Madp‎, 07-29-2015 06:22 PM
    • Replies: 1
    • Views: 2,129
    07-29-2015, 07:28 PM Go to last post
  20. How an ARIMAX{TSA} model is represented in R

    have a relatively simple problem, but yet taking some time to solve it. I am suing ARIMAX{TSA} function. This is the model out <-...

    Started by wasif‎, 07-29-2015 11:16 AM
    arimax, dynamic regression. arima
    • Replies: 0
    • Views: 2,545
    07-29-2015, 11:16 AM Go to last post
  21. How can I calculate Standard Errors of Variance Estimates .

    I want to extract the "standard error" of variance component from the output of "lmer" . In Chapter 12 , Experiments with Random Factors , of the...

    Started by Cynderella‎, 07-29-2015 06:18 AM
    • Replies: 0
    • Views: 580
    07-29-2015, 06:18 AM Go to last post
  22. Standard Error of variance component from the output of lmer .

    I want to extract the "standard error" of variance component from the output of "lmer" . library(lme4) model <- lmer(Reaction ~ Days +...

    Started by Cynderella‎, 07-29-2015 03:16 AM
    lme4, lmer, mixed effect models, r help, random effects model
    • Replies: 0
    • Views: 989
    07-29-2015, 03:16 AM Go to last post
  23. R Workspace Disappearing?

    I have a LOT of code that is computationally intensive. It takes a long time to run. I'd love to be able to paste in all of my code, hit run, and...

    Started by TalkStatNewb‎, 07-28-2015 11:18 PM
    • Replies: 1
    • Views: 940
    07-29-2015, 02:35 AM Go to last post
  24. Difference between two lmer model .

    Can you please explain where is the difference between the following two models : fm1 <- lmer(Reaction ~ Days + (Days | Subject), sleepstudy)...

    Started by Cynderella‎, 07-27-2015 07:51 AM
    correlation, lmer, mixed effect models, multilevel model, random effects model
    • Replies: 3
    • Views: 1,688
    07-28-2015, 10:04 AM Go to last post
  25. Three- in scatter plot

    Hi I´m triying to do a scatterplot with three datasets as in de attached image. This are the data Month Lenght Weigth Condition April ...

    Started by ualdalur‎, 07-24-2015 05:43 AM
    • Replies: 3
    • Views: 1,538
    07-28-2015, 03:14 AM Go to last post
  26. Additive effects

    Hi there, new to R, already loving it though. I have a pretty straightforward model: lm(behavior ~ gene1 * gene2 + age + gender...). Here, gene1...

    Started by Caspar‎, 07-23-2015 02:11 AM
    2 Pages
    1 2
    • Replies: 15
    • Views: 3,672
    07-28-2015, 02:46 AM Go to last post
  27. help with if statement

    I have a function that I am mucking around with. In this function the mean is returned for a either sulphate or nitrate over a list of csv files...

    Started by bugman‎, 07-22-2015 11:26 PM
    2 Pages
    1 2
    • Replies: 25
    • Views: 4,503
    07-27-2015, 07:16 AM Go to last post
  28. How is the confidence interval for variance component in "lmer" function computed ?

    Here is the R code : library(lme4) fm1 <- lmer(Reaction ~ Days + (Days | Subject), sleepstudy) confint.merMod(fm1,oldNames=FALSE)...

    Started by Cynderella‎, 07-27-2015 12:16 AM
    asymptotic standard error, confidence interval, lmer, mixed effect models, variance components
    • Replies: 0
    • Views: 1,714
    07-27-2015, 12:16 AM Go to last post
  29. Help forumulate linear Optimization Problem

    Hello, I have been using R for a while, but I never faced a problem with linear programming/optimization. Now it's time :/. Unfortunately,...

    Started by lammy2004‎, 07-26-2015 02:32 PM
    • Replies: 0
    • Views: 877
    07-26-2015, 02:32 PM Go to last post
  30. How to compute mean of each variables of a list in R ?

    The following is a function of simulating data from simple linear regression and calculating non-coverage probability of each parameters . ...

    Started by Cynderella‎, 07-26-2015 08:37 AM
    r code, r help
    • Replies: 0
    • Views: 1,243
    07-26-2015, 08:37 AM Go to last post
  31. there's way to save R workspace with all h2o package object?

    I have problems to recover my h2o trained model in Rstudio. i work on windows 7 when i try to h2o.saveModel i have too many problems, impossible to...

    Started by Madp‎, 07-25-2015 02:20 PM
    • Replies: 0
    • Views: 1,458
    07-25-2015, 02:20 PM Go to last post
  32. Bin data into quantile buckets

    I want to bin my data into quantile buckets. I could do it with *qunatile* function and some ifelse but that's not smart enough for me. I need...

    Started by Lindberg‎, 07-20-2015 09:55 AM
    quantile
    • Replies: 2
    • Views: 2,493
    07-24-2015, 03:42 PM Go to last post
  33. googleVis: Getting Percentage Sign in Hover Over for GeoMap

    I created some geomaps using gvisGeoChart from the googleVis package. When I hover over, it displays a number like 1.23. is there any way to make it...

    Started by ChrisYee90‎, 07-24-2015 03:21 PM
    • Replies: 0
    • Views: 1,141
    07-24-2015, 03:21 PM Go to last post
  34. Discriminant Analysis?

    Hi, I'm an undergraduate student and not amazing at stats I have a data set which looks at sites where amphibians are found calling and areas...

    Started by Huw‎, 07-24-2015 03:08 PM
    • Replies: 0
    • Views: 985
    07-24-2015, 03:08 PM Go to last post
  35. Calculating Non-Coverage Probability .

    Hi , I have a two-level model with one explanatory variable (X) on the respondent level, and one group-level explanatory variable (Z) . I am...

    Started by Cynderella‎, 07-24-2015 10:33 AM
    coverage, lmer, mixed effects model, r help, simulation study
    • Replies: 0
    • Views: 1,008
    07-24-2015, 10:33 AM Go to last post
  36. How do i weight a data frame by variable?

    Hi I'm familiar with stata/spss. In both of them i know how to use the variable fact to weight or expand the observations. However with R i can't...

    Started by jfca283‎, 07-20-2015 02:39 PM
    • Replies: 2
    • Views: 1,111
    07-22-2015, 10:15 AM Go to last post
  37. Color gradient distribution in 2D Kernel Density Estimation (KDE2D)

    Hi all, I have had a lot of help previously from this forum and I hope I will get some advice on this issue that I can't solve by myself. I...

    Started by koronfelina‎, 07-21-2015 06:17 PM
    • Replies: 0
    • Views: 1,310
    07-21-2015, 06:17 PM Go to last post
  38. Have I correctly specified my model in glmer ?

    The following multilevel logistic model with one explanatory variable at level 1 (individual level) and one explanatory variable at level 2 (group...

    Started by Cynderella‎, 07-20-2015 06:30 AM
    glmer, lmer, logistic regression, mixed effect, multilevel analysis
    • Replies: 0
    • Views: 1,203
    07-20-2015, 06:30 AM Go to last post
  39. Specifying formula of lmer() function in R .

    Say I have one independent variable (X) at individual level and one independent variable (Z) at group level. Both are continuous variable . If the...

    Started by Cynderella‎, 07-20-2015 12:20 AM
    linear mixed model, lmer, lmer mixed effects, r code, r code help
    • Replies: 1
    • Views: 1,247
    07-20-2015, 04:31 AM Go to last post
  40. Example of lmer() function in R documentation .

    How is the following code working ? (fm1 <- lmer(angle ~ recipe * temperature + (1|recipe:replicate), cake, REML= FALSE)) In the formula of...

    Started by Cynderella‎, 07-19-2015 07:38 AM
    lmer, lmer mixed effects, mixed effects model, mixed model, r commands
    • Replies: 1
    • Views: 1,317
    07-19-2015, 06:02 PM Go to last post
  41. Julia and R

    Ok so I have been playing around with programming minor stuff in Julia and I have heard it should be pretty simple to call R from Julia. So my...

    Started by JesperHP‎, 07-18-2015 02:45 PM
    • Replies: 1
    • Views: 1,290
    07-18-2015, 03:22 PM Go to last post
  42. Collapse rows to a list

    Hi all, Trying to use of R to avoid doing some manual task. Here's an example # Example data dat<-data.frame(y=c("A","B","C")) > dat y...

    Started by ledzep‎, 07-16-2015 10:03 AM
    • Replies: 7
    • Views: 1,929
    07-17-2015, 11:21 AM Go to last post
  43. Simulating dice rolls in R

    Hello everybody, So i'm trying to simulate rolling n ten-sided dice x times. However, the event i wish to count is how many times the dice match...

    Started by Prometheus‎, 07-07-2015 06:09 AM
    2 Pages
    1 2
    • Replies: 15
    • Views: 4,733
    07-16-2015, 11:53 AM Go to last post
  44. How to compute the residual standard deviation from `glmer()` function in R?

    I want to extract standard deviation of residual from `glmer()` function in R . So I wrote : lmer_obj = glmer(Y ~ X1 + X2 + (1|Subj),...

    Started by Cynderella‎, 07-15-2015 07:14 AM
    glmer
    • Replies: 1
    • Views: 2,142
    07-15-2015, 08:38 AM Go to last post
  45. Ifelse statement changes value labels

    Hi all, I found that using ifelse changes the label of the values. How can we preserve the original label? # Example data...

    Started by ledzep‎, 07-15-2015 05:49 AM
    • Replies: 1
    • Views: 1,380
    07-15-2015, 06:28 AM Go to last post
  46. Question Weighted Average

    Hi, I am a new member to this community and am having trouble calculating the weighted average of my dataset. Granted, I am a beginner in R barely...

    Started by dmw‎, 07-13-2015 01:00 PM
    weighted average
    • Replies: 4
    • Views: 2,174
    07-14-2015, 08:57 PM Go to last post
  47. Question Could any one help me in solving this task in R

    Data managing. The data file is attached in the form of csv file with the title (data.text)- note that (e = Data are estimated,,,,,,,,,,,,,,,,,,,) U...

    Started by Mossa Elqeftawy‎, 07-12-2015 04:15 AM
    • Replies: 2
    • Views: 1,458
    07-12-2015, 04:27 AM Go to last post
  48. how to split numbers in digit under data frame?

    Hi, I know splitting of a number to digits. But I can't find any way to split numbers in digit under data frame, like as in, I have...

    Started by HemantRupani‎, 07-10-2015 11:30 AM
    • Replies: 7
    • Views: 1,780
    07-12-2015, 01:56 AM Go to last post
  49. performing a calculation in a pairwise fashion

    I know, this is a basic question, but I am not so good at reshaping data. So, I will be thankful for any hint. I am wondering what is the best way...

    Started by gianmarco‎, 07-11-2015 11:30 AM
    • Replies: 1
    • Views: 1,404
    07-11-2015, 12:13 PM Go to last post
  50. row-wise duplicated values

    Hi, I want to remove the rows if any element is duplicated per row, like, 1 2 6 6 2 1 87 3 4 3 ...

    Started by HemantRupani‎, 07-11-2015 04:57 AM
    • Replies: 1
    • Views: 951
    07-11-2015, 06:32 AM Go to last post
  51. Non-linear model fit

    Hi everyone. I am working on fitting a non-linear least squares model with R. My data points are virus contentration (ydata) over a timeline of 33...

    Started by Lisanne‎, 07-07-2015 04:55 AM
    • Replies: 8
    • Views: 2,054
    07-10-2015, 04:31 AM Go to last post
  52. Constraint Optimization- Value not in the interior of the feasible region

    I'm trying to replicate the Excel Solver in R- which is basically a constraint optimization problem I'm trying to minimize the cost per action...

    Started by mzakhary‎, 07-09-2015 01:19 PM
    constrained var, minimization, optimization
    • Replies: 0
    • Views: 3,374
    07-09-2015, 01:19 PM Go to last post
  53. Help Needed: Multivariate Regression Using R

    I am testing the a couple of CAPM based models for my dissertation, and I have a healthy amount of stocks to regress, 5000 according to my last...

    Started by Alexinvestments‎, 07-09-2015 10:36 AM
    • Replies: 0
    • Views: 1,052
    07-09-2015, 10:36 AM Go to last post
  54. MRV heuristic for sudoku in R

    I have modified a function to use MRV(fill in the value that has least possible combinations first) to solve sudoku. Somehow the new function is far...

    Started by lvdp‎, 07-08-2015 07:59 PM
    • Replies: 0
    • Views: 1,194
    07-08-2015, 07:59 PM Go to last post
  55. Constraint Optimization using R

    Hi, I'm trying to replicate the Excel Solver in R- which is basically a constraint optimization problem I'm trying to minimize the cost per...

    Started by mzakhary‎, 07-08-2015 10:58 AM
    constraints, minimize, optimization
    • Replies: 1
    • Views: 1,409
    07-08-2015, 05:14 PM Go to last post
  56. Question how detect seasonality within a time series?

    Hello, I desire to detect the seasonality on my time series of temperature. What is it the best and easiest method to do this kind of analysis? ...

    Started by paopao87‎, 07-03-2015 02:42 AM
    • Replies: 1
    • Views: 1,866
    07-06-2015, 06:57 PM Go to last post
  57. Post Recording from a USB Port in RStudio

    Hello All! I am currently trying to get R to read some voltage data incoming from a DAQ hooked up to my computer by a USB port. I am having...

    Started by matt47t‎, 07-01-2015 05:03 PM
    daq, rstudio, usb, voltage
    • Replies: 7
    • Views: 1,989
    07-06-2015, 06:45 PM Go to last post
  58. “CFINDER” output data importation and calculation of mean of pairs

    Hi, I face a problem: I have to import a text file (from_soft.txt, which is output from "CFINDER" software). It looks like this: ...

    Started by Bryoman‎, 07-06-2015 08:03 AM
    mean of means, paired data, reference series, row, rows to columns
    • Replies: 0
    • Views: 4,489
    07-06-2015, 08:03 AM Go to last post
  59. Regarding dimnames

    Dear- Here is a few lines to download (free and open) daily prices of Microsoft. install.packages("quantmod") library(quantmod) >...

    Started by jk90029‎, 07-05-2015 02:39 AM
    • Replies: 5
    • Views: 2,055
    07-05-2015, 07:38 AM Go to last post
  60. Desperate need for help: PCA, DCA, and Diversity analyses for Chironomid Data

    SINCEREST apologies in advance....I am a part time grad student many years removed from classwork who has been knee deep in regulatory wetland work...

    Started by ryguy1101‎, 07-03-2015 07:06 PM
    • Replies: 0
    • Views: 1,170
    07-03-2015, 07:06 PM Go to last post

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