1. 10-14-2010
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Forum: R

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

  1. 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
    5 Pages
    1 2 3 ... 5
    • Replies: 64
    • Views: 17,508
    11-27-2014, 03:15 AM 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 10:41 AM
    8 Pages
    1 2 3 ... 8
    • Replies: 107
    • Views: 18,839
    11-22-2014, 09:28 AM Go to last post
  3. 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
    22 Pages
    1 2 3 ... 22
    • Replies: 322
    • Views: 37,659
    10-23-2014, 08:26 PM 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
    19 Pages
    1 2 3 ... 19
    • Replies: 273
    • Views: 42,624
    10-20-2014, 11:21 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 10:22 AM
    7 Pages
    1 2 3 ... 7
    • Replies: 99
    • Views: 35,016
    05-22-2014, 03:07 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 08:20 PM
    • Replies: 0
    • Views: 6,229
    10-17-2012, 08:20 PM Go to last post
  1. Probabilistic assignment of values to a data frame column

    I'm creating a data frame of students with four columns: gender, year (freshman, sophomore, junior, or senior), age, and GPA. I would like a...

    Started by rwjones‎, 01-28-2015 05:28 PM
    • Replies: 1
    • Views: 122
    01-30-2015, 06:24 PM Go to last post
  2. How to correct the aspect ratio of 3D plot in R

    I am plotting a 3D kernel (longitude, latitude, depth) and and the magnitude data with the sphere radius and time with color as follows. I have...

    Started by Ferra‎, 01-30-2015 02:59 PM
    • Replies: 0
    • Views: 53
    01-30-2015, 02:59 PM Go to last post
  3. How to show the color bar legend in R?

    I computed a 3D kernel (longitude, latitude, depth) and displayed the magnitude with the sphere radius and time with color as follows. I have two...

    Started by Ferra‎, 01-20-2015 05:28 PM
    • Replies: 5
    • Views: 364
    01-29-2015, 10:49 AM Go to last post
  4. Regression with interaction (metric variable) in graphic

    Hey, I did a regressionanalysis with the following variables: Predictor = dummy variable, dependent Variable = metric, moderator variable = metric...

    Started by St_Fo‎, 01-28-2015 09:04 AM
    graphics, interaction effect, regression
    • Replies: 2
    • Views: 135
    01-29-2015, 07:40 AM Go to last post
  5. Censored data for survival data

    Hi everyone, looking for some help with R. I have made a Kaplan-Meier plot as below: ...

    Started by Prometheus‎, 01-28-2015 07:14 AM
    • Replies: 1
    • Views: 101
    01-28-2015, 08:30 AM Go to last post
  6. create a Legend for a plot

    I am trying to run this code in R to create a legend but it doesn't work: library(grDevices) colfunc <- colorRampPalette(c("white", "black"))...

    Started by Ferra‎, 01-27-2015 02:27 PM
    • Replies: 1
    • Views: 64
    01-27-2015, 02:51 PM Go to last post
  7. Comparing multiple PDF documents using R

    Is there a way to compare more than two or atleast two documents using R to identify the differences/common content? I have about 60 PDF files at...

    Started by excelmac‎, 01-26-2015 09:22 PM
    r programming, text mining
    • Replies: 2
    • Views: 104
    01-26-2015, 10:20 PM Go to last post
  8. Comparing self made models

    Hello! I have a quenstion about comparing models. Not models fitted by R itself, but user defined models. Ill explain through this example: ...

    Started by Wooferd‎, 01-23-2015 05:51 AM
    model, model selection, modeling techniques, modelling
    • Replies: 4
    • Views: 168
    01-26-2015, 05:16 AM Go to last post
  9. Conditional execution of function in a data frame by multiple Columns (Factorlevels)

    - have to rephrase please delete

    Started by tester1234‎, 01-25-2015 06:16 AM
    • Replies: 0
    • Views: 136
    01-25-2015, 06:16 AM Go to last post
  10. To play a sound file. / Make alarm.

    Dear- I used use Splus, an old version of R, many years. To make a sound, dos("sndrec32 /embedding /play c:\\ten.wav") is still working...

    Started by jk90029‎, 01-23-2015 11:27 PM
    • Replies: 1
    • Views: 118
    01-23-2015, 11:37 PM Go to last post
  11. R-assistance

    Hi everyone, I have started a PHD in Economics and in that program I also have to take some courses, one being on statistical modeling using R....

    Started by Artreides‎, 01-22-2015 08:27 AM
    • Replies: 2
    • Views: 123
    01-23-2015, 05:11 AM Go to last post
  12. Calculate Time since Event

    I would like to calculate the time after an event. I would like to derive the "TIME AFTER EVENT" column per example below: TIME EVENT TIME AFTER...

    Started by toothpicky‎, 01-21-2015 06:24 PM
    • Replies: 7
    • Views: 218
    01-23-2015, 03:05 AM Go to last post
  13. How to extract information from polygons at multiple points locations in R

    Hello, I am trying to build a simple function that calculates an average (mean) of Sum_MVKT extracted from a set of predefined point locations. ...

    Started by taejnkwon‎, 01-22-2015 08:59 PM
    data extraction in r
    • Replies: 0
    • Views: 93
    01-22-2015, 08:59 PM Go to last post
  14. MCMC in R / Graph

    Hi! I'm looking to learn more about Bayesian Analysis (mostly MCMC and the mechanics underneath the hood) and I realized R is probably the best...

    Started by jamesmartinn‎, 01-22-2015 01:32 PM
    • Replies: 2
    • Views: 102
    01-22-2015, 02:58 PM Go to last post
  15. [Quadratic Discriminant Analysis] - Which discriminators contribute most?

    Hi everyone In R, when performing a linear discriminant analysis (lda, MASS package) the output shows for each discriminant function (and original...

    Started by tateblack‎, 01-22-2015 09:13 AM
    discriminator, qda, quadratic discriminants
    • Replies: 0
    • Views: 46
    01-22-2015, 09:13 AM Go to last post
  16. Always show 2 digit numbers

    I have a row of data from 1-99. I want to show all single digits as 01, 02, etc and keep numbers that are already 2 digits (10-99) the same. Is there...

    Started by toothpicky‎, 01-14-2015 01:02 PM
    • Replies: 3
    • Views: 148
    01-21-2015, 06:22 PM Go to last post
  17. Newly installed RStudio / How change the editor?

    Dear- I installed the RStudio few days ago. As shown in the picture below, there is a built-in editor in RStudio. But it does NOT even have...

    Started by jk90029‎, 01-20-2015 12:51 PM
    • Replies: 3
    • Views: 135
    01-21-2015, 11:31 AM Go to last post
  18. Different SD with simulated stationary AR(1) series

    Hi! my first post, exciting :) I need to simulate a number of AR(1) series, with a fixed mean (300) and SD(21) and 53 data points. However, when...

    Started by Sharidb‎, 01-21-2015 05:30 AM
    • Replies: 2
    • Views: 104
    01-21-2015, 07:07 AM Go to last post
  19. Help with standardized coefficients in lmer

    Hi, I need to report standardized coefficients for the predictors in my model. I *think* I have figured out how to do this for my model of...

    Started by laurajspeed‎, 01-20-2015 10:37 AM
    beta coefficient, lmer, standardized coefficients
    • Replies: 0
    • Views: 68
    01-20-2015, 10:37 AM Go to last post
  20. Help with ranking data from pairwise comparison

    I am looking for a way to visualize pairwise comparisons from a non-parametric statistical test called Cochran's Q test. I am using the function...

    Started by dgi‎, 01-20-2015 08:42 AM
    cochran's q test, pairwise comparisons, ranking
    • Replies: 0
    • Views: 74
    01-20-2015, 08:42 AM Go to last post
  21. Shading based on a single lat and long point

    Hi Folks, I have a set of lat and long points for a bunch of universities in Australia. I am trying to replicate Figure 1 from...

    Started by Lazar‎, 01-18-2015 11:53 PM
    • Replies: 6
    • Views: 206
    01-19-2015, 11:29 PM Go to last post
  22. R Anti-Tips

    Because examples of "what not to do" are just as informative as any "good" advice. Always attach as much as possible: ## Attach everything! ...

    Started by TheEcologist‎, 01-06-2015 04:24 AM
    • Replies: 6
    • Views: 316
    01-19-2015, 05:53 AM Go to last post
  23. Generating a random variable with a defined correlation to an existing variable

    Hi guys, Is there anyway to generate a random variable with a defined correlation to an existing variable? I have checked out the "copula" package...

    Started by bbl92‎, 01-18-2015 07:54 PM
    • Replies: 0
    • Views: 120
    01-18-2015, 07:54 PM Go to last post
  24. R Code help please (matlab)

    I cant understand this line of code can anyone help me on this? T <- apply(A, 3, function(x) t(Bmj) %*% x %*% Bmj) A nrow=ncol = 31X31...

    Started by armindo‎, 01-14-2015 08:11 PM
    • Replies: 2
    • Views: 222
    01-18-2015, 07:03 AM Go to last post
  25. r studio

    Hi all, I'm using R Studio ( I'm still a novice on R). I'm trying to run the basic data sets that come with the package like the mileage one...

    Started by DATAfiend‎, 01-16-2015 10:25 PM
    plot, r studio
    • Replies: 2
    • Views: 181
    01-16-2015, 10:59 PM Go to last post
  26. R language

    I was browsing through Coursera, a platform for online courses, and I ended up running into this https://www.coursera.org/course/rprog course, anyone...

    Started by askazy‎, 01-16-2015 10:15 AM
    • Replies: 0
    • Views: 139
    01-16-2015, 10:15 AM Go to last post
  27. Lightbulb Principal Component Analysis in R- Data rotation

    I ran prcomp on my data (7000 observations, 48 variables), and I biplot I got seems to have thousands of points. My guess is that R is treating each...

    Started by inferno‎, 01-15-2015 05:06 PM
    pca, principal component, r language, statistics
    • Replies: 7
    • Views: 226
    01-15-2015, 06:52 PM Go to last post
  28. Principal Component Analysis in R Help

    I am a beginner to R. I have read several guides, but still am stuck on this: I have data in an excel csv file, on which I want to run PCA. I'm...

    Started by inferno‎, 01-13-2015 06:04 PM
    2 Pages
    1 2
    pca, prcomp(), principal component, r language, statistics
    • Replies: 20
    • Views: 409
    01-13-2015, 10:33 PM Go to last post
  29. List of Financial Data Sources accessible via R Interface

    List of Financial Data Sources accessible via R Interface

    Started by consuli‎, 01-12-2015 05:08 AM
    • Replies: 0
    • Views: 322
    01-12-2015, 05:08 AM Go to last post
  30. Very high standard error for LD50

    Hi, I'm using dose.p function from MASS to work out the LD50 from 6 concentrations, but I end up with a standard error around 4 orders of...

    Started by Zaphod‎, 01-09-2015 08:06 AM
    • Replies: 3
    • Views: 334
    01-11-2015, 10:54 AM Go to last post
  31. Package and bundle R

    I have an R script and would like to package/bundle it along with R installation files and all other necessary files to run on a new computer that...

    Started by awonen‎, 01-10-2015 01:59 PM
    bundle, exe, standalone
    • Replies: 1
    • Views: 183
    01-11-2015, 06:48 AM Go to last post
  32. Tips for learning R.

    Hi everyone While I realize that there is extensive information on this website/thread about R resources. I was wondering if someone could suggest...

    Started by excelmac‎, 01-04-2015 03:07 PM
    • Replies: 11
    • Views: 514
    01-09-2015, 09:10 AM Go to last post
  33. 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: 6
    • Views: 228
    01-08-2015, 01:26 PM Go to last post
  34. Arrow Anybody knows how to specify a latent class model using FLXMRLMER in R?

    Hi Everyone, I'm trying to use the package 'flexmix' in R to specify latent class models. I want to specify a model that has random effects. I...

    Started by Adiosamigos‎, 12-31-2014 05:52 PM
    flexmix, flxmrlmer, latent class modeling, random effects
    • Replies: 2
    • Views: 259
    01-07-2015, 09:33 AM Go to last post
  35. code error

    hey all, I'm getting the below error and am pretty sure it is related to barplot(table(sdata$Gender.temp)), but I don't know what to do to...

    Started by stf‎, 01-06-2015 06:11 PM
    • Replies: 0
    • Views: 149
    01-06-2015, 06:11 PM Go to last post
  36. Unhappy [Winbugs] great divergence between prior and posterior distribution in Winbugs

    Hi, I am new starter of Winbugs. I am trying to simulate exporting coefficients of land uses based on the measurements of water nutrients. The prior...

    Started by yqxia‎, 01-06-2015 02:06 PM
    prior; posterior, winbugs
    • Replies: 0
    • Views: 145
    01-06-2015, 02:06 PM Go to last post
  37. Find whether one mean is very different from all others in multiple measurements

    I have many data frames like the one reproduced below in R. I am trying to find cases where one group only is very different from the other groups (I...

    Started by francy‎, 01-05-2015 08:12 AM
    group differences
    • Replies: 0
    • Views: 186
    01-05-2015, 08:12 AM Go to last post
  38. Plotting geographical locations on a map

    Hi every body have a happy new year! Recently I have a small task, which I want to show to geographical locations of the members on a map. - I...

    Started by BGM‎, 12-27-2014 07:57 AM
    • Replies: 4
    • Views: 317
    01-04-2015, 08:15 PM Go to last post
  39. How to save compressed gzip files using the save() function?

    Hello, When going to the help page for the save() function, it says that using the option compress=TRUE will by default save the object using gzip...

    Started by BearJewJ‎, 12-24-2014 02:54 PM
    • Replies: 2
    • Views: 289
    01-04-2015, 06:23 AM Go to last post
  40. How can I get R to generate p-value when doing a correlation matrix?

    How can I get R to generate p-value for each correlation when doing a correlation matrix? Here are my current steps: > M <- cor(data1) ...

    Started by CrunchAndSee‎, 01-03-2015 05:03 PM
    correlation matrix, p-value
    • Replies: 1
    • Views: 203
    01-04-2015, 04:09 AM Go to last post
  41. Group/bin/bucket data in R and get count per bucket and sum of values per bucket

    I wish to bucket/group/bin data : C1 C2 49488.01172 0.0512 ...

    Started by excelmac‎, 01-04-2015 12:22 AM
    • Replies: 1
    • Views: 231
    01-04-2015, 12:30 AM Go to last post
  42. basic time lag correlation in R ?

    Can someone show me how to do a basic time lag correlation in R ? Where it tries out all combinations of lags, and finds the best one. What...

    Started by CrunchAndSee‎, 12-29-2014 12:09 PM
    • Replies: 8
    • Views: 460
    01-01-2015, 04:09 PM Go to last post
  43. Automatically migrating SPSS scripts to R

    https://service.eoda.de/translater/?lang=en (Online Translator)

    Started by consuli‎, 01-01-2015 01:46 PM
    • Replies: 0
    • Views: 160
    01-01-2015, 01:46 PM Go to last post
  44. How to read Excel into R and execute hurst(x)?

    I never used R before and so need help on a seemingly trivial issue: I have an excel file "data.xlsx" and want to run the function hurst(x) on it:...

    Started by emcor‎, 12-29-2014 10:26 AM
    • Replies: 3
    • Views: 241
    12-31-2014, 03:05 PM Go to last post
  45. R skills outsourcing

    Hi guys I'm in need of some assistance with R programming for a small project. It involves conversion of an excel based calculation tool (mortgage...

    Started by excelmac‎, 12-29-2014 08:40 PM
    • Replies: 0
    • Views: 198
    12-29-2014, 08:40 PM Go to last post
  46. What's a neat personal non-work, non-school way you use Stats/R in your life/hobbies?

    When used car shopping, I sometimes do a linear regression on car prices, just to find an equation for "fair value". When a subsequent car comes...

    Started by CrunchAndSee‎, 12-23-2014 02:12 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 681
    12-29-2014, 12:06 PM Go to last post
  47. How to run same program every hour?

    Dear- In Excel VBA, the "timer" is well-known and implemented for running same program every 10-min. How about in R? For example, we have a...

    Started by jk90029‎, 12-28-2014 05:50 AM
    • Replies: 8
    • Views: 396
    12-28-2014, 11:02 PM Go to last post
  48. LD50 for a logarithmic dosage

    Hi, I'm new to R and I'm trying to work out the LD50 using total deaths out of 100 for 6 different concentrations. I need the LD50 and to be able...

    Started by Zaphod‎, 12-27-2014 08:46 AM
    • Replies: 4
    • Views: 325
    12-28-2014, 11:27 AM Go to last post
  49. How to export a R data to text file (*.txt) with Tab

    Dear- It is well known that we can easily export and import using read.csv and write.csv. Also below there is a post how to import and export...

    Started by jk90029‎, 12-26-2014 02:55 AM
    • Replies: 2
    • Views: 317
    12-27-2014, 08:53 AM Go to last post
  50. Structural Equation Modeling - Chi-Square confusion

    Hi, I ran structural equation modeling in lavaan. I've run ML, MLM and MLR. The chi-square p-values are always 0.000. The data is quite nonnomal...

    Started by FO2332‎, 12-27-2014 01:24 AM
    chi-square, lavaan, sem
    • Replies: 0
    • Views: 194
    12-27-2014, 01:24 AM Go to last post
  51. Packages Carseat Dataset!

    Hi, Ok i am very new to R and I am not a computer wiz. I just installed R on my laptop and I need to work on the carseat dataset. I tried to...

    Started by abeer85‎, 12-25-2014 06:58 PM
    • Replies: 6
    • Views: 410
    12-26-2014, 04:09 PM Go to last post
  52. Extract Coefficients from each Imputation run from R MICE package

    Hey all, I am trying to extract coefficients from each run of multiple imputations using MICE package. Here is an example set: rm(list=ls())...

    Started by ledzep‎, 12-23-2014 07:19 AM
    • Replies: 1
    • Views: 222
    12-23-2014, 08:03 PM Go to last post
  53. How do I access the "workspace" window? I only have the console window.

    First time using R. VERY excited!! How do I access the "workspace" window? I only have the console window. Nothing in the "view" menu has an...

    Started by CrunchAndSee‎, 12-22-2014 03:17 PM
    • Replies: 7
    • Views: 382
    12-22-2014, 11:21 PM Go to last post
  54. "cross product" regression of all variables to find highest correlation?

    http://blog.nutonian.com/how-we-beat-nate-silver I just read this article where the Stats team has no understanding of the domain or variables...

    Started by CrunchAndSee‎, 12-11-2014 04:35 PM
    • Replies: 11
    • Views: 544
    12-22-2014, 11:15 PM Go to last post
  55. Rcpp

    Does anyone here use Rcpp? I wonder how do I install Linux, and if anyone knows of some study material on it I'm grateful.

    Started by askazy‎, 12-12-2014 04:16 PM
    • Replies: 12
    • Views: 539
    12-20-2014, 06:50 PM Go to last post
  56. Export R output table to Excel

    Export R output table to Excel Usually i use SAS Proc Tabulate to generate tables and then i export them to excel. But now my license for SAS is...

    Started by dezo_pp‎, 12-11-2014 10:27 AM
    • Replies: 4
    • Views: 449
    12-19-2014, 12:31 PM Go to last post
  57. Hypothesis test of proportion from a table

    I have a column with 50 data points regarding gender of the respondent (male or female). Is there a direct way to calculate if the number of males in...

    Started by zerohour‎, 12-18-2014 12:41 PM
    hypothesis, proportion
    • Replies: 1
    • Views: 241
    12-18-2014, 01:40 PM Go to last post
  58. Two sample test from same table

    I have a table with 3 columns - the respondent serial number, the gender (male / female) and the height. I want to test if the males are taller than...

    Started by zerohour‎, 12-18-2014 12:48 PM
    testing of hypothesis, two sample
    • Replies: 0
    • Views: 178
    12-18-2014, 12:48 PM Go to last post
  59. Installing Rcmdr into Rstudio on a Mac

    I am trying to install the Rcmdr package into Rstudio on my mac but it keeps crashing as soon as I click the checkmark beside Rcmdr under the...

    Started by brittrlynn‎, 01-15-2014 01:39 PM
    crashing, rcmdr, rstudio, software
    • Replies: 8
    • Views: 808
    12-15-2014, 06:24 PM Go to last post
  60. How to have the effect of density from the hist() in the filled box in the legend?

    how to have the effect of density = 55 or 45 in hist() in the filled box in the legend? Thanks! x1 <- rnorm(100) x2 <- rnorm(100, 2) hist(x1,...

    Started by zzz‎, 12-14-2014 07:43 PM
    • Replies: 2
    • Views: 221
    12-15-2014, 12:21 PM Go to last post

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