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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
    6 Pages
    1 2 3 ... 6
    • Replies: 76
    • Views: 18,808
    02-04-2015, 10:37 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 10:41 AM
    8 Pages
    1 2 3 ... 8
    news
    • Replies: 107
    • Views: 19,461
    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: 38,794
    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: 43,736
    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
    information
    • Replies: 99
    • Views: 35,576
    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: 6,423
    10-17-2012, 08:20 PM Go to last post
  1. 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 03:34 AM
    • Replies: 2
    • Views: 112
    Today, 04:04 PM Go to last post
  2. >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, Yesterday 08:13 PM
    • Replies: 7
    • Views: 117
    Yesterday, 10:43 PM Go to last post
  3. [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 10:47 AM
    • Replies: 6
    • Views: 212
    Yesterday, 10:14 PM Go to last post
  4. 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, Yesterday 07:47 PM
    • Replies: 6
    • Views: 116
    Yesterday, 10:08 PM Go to last post
  5. 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, Yesterday 09:10 AM
    • Replies: 1
    • Views: 71
    Yesterday, 09:41 AM Go to last post
  6. 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 03:16 AM
    • Replies: 1
    • Views: 117
    03-01-2015, 10:35 PM Go to last post
  7. [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 03:38 AM
    gnu r, lattice, stacked bar charts
    • Replies: 2
    • Views: 131
    03-01-2015, 11:02 AM Go to last post
  8. 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 11:42 AM
    • Replies: 1
    • Views: 92
    02-28-2015, 01:49 PM Go to last post
  9. 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 07:27 PM
    • Replies: 1
    • Views: 128
    02-27-2015, 07:29 PM Go to last post
  10. 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 11:32 PM
    • Replies: 0
    • Views: 102
    02-25-2015, 11:32 PM Go to last post
  11. 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 03:00 PM
    coefficient significance, correlation, hypothesis, spearman's rank, test
    • Replies: 2
    • Views: 220
    02-25-2015, 06:04 PM Go to last post
  12. 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 09:57 AM
    bar, globe, map
    • Replies: 0
    • Views: 76
    02-25-2015, 09:57 AM Go to last post
  13. 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 07:10 AM
    • Replies: 5
    • Views: 252
    02-25-2015, 03:18 AM Go to last post
  14. 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 07:50 PM
    • Replies: 3
    • Views: 144
    02-24-2015, 09:09 PM Go to last post
  15. 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 06:58 PM
    loops, multicollinearity, regression analysis, vif
    • Replies: 0
    • Views: 85
    02-24-2015, 06:58 PM Go to last post
  16. 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 07:43 AM
    • Replies: 3
    • Views: 139
    02-24-2015, 11:31 AM Go to last post
  17. 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 02:35 PM
    • Replies: 3
    • Views: 203
    02-24-2015, 12:34 AM Go to last post
  18. 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, 02-19-2015 12:42 AM
    • Replies: 11
    • Views: 352
    02-23-2015, 11:55 PM Go to last post
  19. 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 04:18 AM
    dunn.test, kruskal-wallis, sequence data
    • Replies: 2
    • Views: 90
    02-23-2015, 08:53 AM Go to last post
  20. 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 08:01 PM
    regsubsets
    • Replies: 0
    • Views: 128
    02-20-2015, 08:01 PM Go to last post
  21. 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 12:27 PM
    • Replies: 0
    • Views: 77
    02-20-2015, 12:27 PM Go to last post
  22. 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 08:00 AM
    • Replies: 0
    • Views: 80
    02-20-2015, 08:00 AM Go to last post
  23. 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 05:33 AM
    • Replies: 4
    • Views: 167
    02-20-2015, 07:38 AM Go to last post
  24. 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 08:52 PM
    • Replies: 7
    • Views: 288
    02-20-2015, 12:24 AM Go to last post
  25. 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 09:07 PM
    html, knitr, make
    • Replies: 3
    • Views: 126
    02-19-2015, 04:32 AM Go to last post
  26. 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 04:16 AM
    • Replies: 0
    • Views: 84
    02-19-2015, 04:16 AM Go to last post
  27. 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 03:57 AM
    • Replies: 0
    • Views: 76
    02-19-2015, 03:57 AM Go to last post
  28. 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 09:23 AM
    • Replies: 1
    • Views: 133
    02-18-2015, 05:47 PM Go to last post
  29. Error: data must be of a vector type, was 'NULL'

    Hi all, I'm trying to run the gmm() function and receiving the above error. I've changed the data information to 'mydata' (for the data file) and...

    Started by DSPorter‎, 02-17-2015 06:01 PM
    • Replies: 4
    • Views: 189
    02-18-2015, 03:28 PM Go to last post
  30. Creating nice looking tables from dataset in R

    How to create a nice looking tables from dataset in R , similar like PROC TABULATE in SAS?

    Started by dezo_pp‎, 02-16-2015 06:22 AM
    • Replies: 7
    • Views: 230
    02-17-2015, 05:43 PM Go to last post
  31. Wink How to create matrix from character vectors

    I am analysing a table and trying to sort the rows respecting a condition (column 1 = 2). I wish then to create a sub-table formed by the rows...

    Started by Giongion‎, 02-17-2015 05:36 AM
    for loop
    • Replies: 1
    • Views: 136
    02-17-2015, 05:50 AM Go to last post
  32. checking large primes in R

    library(gmp) isThisPrime <- function(x) { library(gmp) x<-as.bigz(x) div <- sieve(ceiling(sqrt(x))) (x > 1) & ((x == 2) |...

    Started by darkdream‎, 02-07-2015 05:19 PM
    • Replies: 1
    • Views: 190
    02-16-2015, 12:27 PM Go to last post
  33. t-test with specific conditions

    Hi, I have a data set with a few variables: X is a numeric variable, Y and Z are factor variables containing only 2 factors (Y=1,2 Z=3,4) ...

    Started by ivn‎, 02-15-2015 01:06 PM
    • Replies: 3
    • Views: 165
    02-15-2015, 07:03 PM Go to last post
  34. Random variables using runif with predefined mean

    Is it possible to generate random values using runif with predefined mean? I want 100 random values with a predifined mean of 0.75. Using runif() it...

    Started by user41223‎, 02-14-2015 07:42 AM
    • Replies: 9
    • Views: 230
    02-14-2015, 12:30 PM Go to last post
  35. Capital Asset Pricing Model and regression help

    Hi all, I've downloaded the last 5 years of share prices for one company, the index and the risk free returns using the following code. >...

    Started by DSPorter‎, 02-12-2015 04:50 PM
    • Replies: 2
    • Views: 191
    02-13-2015, 05:38 PM Go to last post
  36. Regression on the CAPM help

    Hi :) I made a thread yesterday but I didn't display my code right so I'll give it another go. Apologies if I do something wrong, still learning....

    Started by DSPorter‎, 02-13-2015 03:35 PM
    • Replies: 0
    • Views: 132
    02-13-2015, 03:35 PM Go to last post
  37. Multivariate Outlier Detection

    Hi all, I want to compare the results of "classical multivariate mahalanobis distance" scores of 5 variables for 2 million cases and "minimum...

    Started by monhaml‎, 02-13-2015 12:50 AM
    mahalanobis, outlier detection, programming
    • Replies: 2
    • Views: 162
    02-13-2015, 03:34 AM Go to last post
  38. Student's t-Distribution vs. Bell-Curve

    Hi there! First of all, I am not a statistician and am working with R for three days now. So don't be too harsh, please. I am working on a...

    Started by sullivan‎, 02-12-2015 04:06 PM
    • Replies: 2
    • Views: 166
    02-12-2015, 04:17 PM Go to last post
  39. testing normality

    Can someone help to find the error in my code? I wanted to make a program in R which will tell me if a distribution is normal or not. It should also...

    Started by ivn‎, 02-12-2015 10:35 AM
    normality, skewness
    • Replies: 1
    • Views: 108
    02-12-2015, 11:52 AM Go to last post
  40. Error: non-numeric argument to binary operator (creating excess returns)

    Hello all, I'm new to the forums so hopefully I'm in the right place. I'm using R and I have a csv file with 3 different stock prices. I'm...

    Started by DSPorter‎, 02-10-2015 04:29 PM
    • Replies: 7
    • Views: 259
    02-11-2015, 06:59 PM Go to last post
  41. Question about Fisher's Exact Test

    Hi everyone- new to posting here. I am wondering if I can get some feedback on simple code for a Fisher's test, as I am pretty new to R. I am...

    Started by murp‎, 02-10-2015 04:29 PM
    fisher's exact test, fishers, help please, help!
    • Replies: 2
    • Views: 172
    02-10-2015, 05:06 PM Go to last post
  42. Merge a matrix with means with another matrix with SDs into a nice end result

    Let's say I have two matrices like this: means <- matrix(c(12.5,13.4,15.2,11.3), ncol=2) sds <- matrix(c(1.2,1.3,1.6,0.9), ncol=2) How do...

    Started by user41223‎, 02-10-2015 05:03 AM
    • Replies: 1
    • Views: 124
    02-10-2015, 06:07 AM Go to last post
  43. Stepwise Regression in R Forward

    I came across this post http://stackoverflow.com/a/3701896/3007275 which has some information about forward stepwise regression. However, I don't...

    Started by excelmac‎, 02-05-2015 09:13 PM
    regression equation
    • Replies: 1
    • Views: 183
    02-08-2015, 06:32 AM Go to last post
  44. computing power in R

    Hi, How can I compute the power of dixon discordancy test in R. as there are direct commands for computing ANOVA & t.test 's power but not for this...

    Started by pearl shine‎, 02-06-2015 12:02 AM
    • Replies: 0
    • Views: 181
    02-06-2015, 12:02 AM Go to last post
  45. How to calculate the integral of the sum of two kernel density functions in R?

    I want to calculate the integral (0 to t) of the sum of two kernel density functions in R. I wrote the code as follows, but it gives me error. I am...

    Started by Ferra‎, 02-04-2015 12:26 PM
    integration, kernel density, sum
    • Replies: 3
    • Views: 131
    02-04-2015, 01:24 PM Go to last post
  46. Bootstrapping something...anything...

    hey yo everyone. so i have this homework assignment where i'm supposed to bootstrap a particular statistic. i have to say i'm not the most...

    Started by spunky‎, 02-03-2015 08:18 PM
    • Replies: 4
    • Views: 166
    02-04-2015, 10:20 AM Go to last post
  47. Longitude Latitude Time Series Plot

    Hi All! I have been looking to find a package that will allow to plot time series longitude/latitude in a map with density and connecting lines....

    Started by namenter‎, 02-03-2015 11:53 PM
    map, plot, spatial, time series
    • Replies: 0
    • Views: 159
    02-03-2015, 11:53 PM Go to last post
  48. Can we read/import SAS code script in R

    As described in the title !:)

    Started by excelmac‎, 02-03-2015 12:49 PM
    • Replies: 4
    • Views: 194
    02-03-2015, 09:54 PM Go to last post
  49. How to report a non-significant main effect with significant contrasts (LME)

    Hi :wave:, Sorry for a lengthy first post, but I'm at my wits end :( I am using multilevel linear modelling with nlme's lme function to analyse...

    Started by xClueless‎, 02-02-2015 01:29 AM
    contrasts, lme, nlme, repeated measure
    • Replies: 0
    • Views: 192
    02-02-2015, 01:29 AM Go to last post
  50. 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: 233
    01-30-2015, 06:24 PM Go to last post
  51. 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: 126
    01-30-2015, 02:59 PM Go to last post
  52. 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: 521
    01-29-2015, 10:49 AM Go to last post
  53. 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: 233
    01-29-2015, 07:40 AM Go to last post
  54. 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: 176
    01-28-2015, 08:30 AM Go to last post
  55. 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: 125
    01-27-2015, 02:51 PM Go to last post
  56. 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: 193
    01-26-2015, 10:20 PM Go to last post
  57. 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: 238
    01-26-2015, 05:16 AM Go to last post
  58. 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: 196
    01-25-2015, 06:16 AM Go to last post
  59. 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: 183
    01-23-2015, 11:37 PM Go to last post
  60. 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: 192
    01-23-2015, 05:11 AM Go to last post

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