1. 10-14-2010
    Views:
    16,941
+ Post New Thread
Page 1 of 49 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 ... LastLast
Threads 1 to 60 of 2937

Forum: R

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

  1. 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: 270
    • Views: 33,754
    08-18-2014, 09:40 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 05:08 AM
    5 Pages
    1 2 3 ... 5
    • Replies: 63
    • Views: 12,559
    08-12-2014, 06:30 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: 106
    • Views: 13,952
    07-17-2014, 04:31 PM Go to last post
  4. 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
    22 Pages
    1 2 3 ... 22
    • Replies: 321
    • Views: 30,238
    06-18-2014, 04:13 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 09:22 AM
    7 Pages
    1 2 3 ... 7
    information
    • Replies: 99
    • Views: 29,935
    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: 3,909
    10-17-2012, 07:20 PM Go to last post
  1. Robust Split-plot ANOVA in R

    Hi, I have conducted a physiological research designed in bewteen-by-within way. A split-plot ANOVA analysis would be most suitable for my...

    Started by Martin Marko‎, 04-14-2014 06:32 AM
    • Replies: 4
    • Views: 416
    Today, 06:02 AM Go to last post
  2. how to summarize data

    Hello, I am attempting to use the plyr package and SummarySE function to summarize the following data.. structure(list(Day = c(1L, 2L, 3L, 1L,...

    Started by deangelr‎, 08-19-2014 10:22 AM
    • Replies: 2
    • Views: 122
    08-19-2014, 10:51 AM Go to last post
  3. 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 04:21 PM
    • Replies: 2
    • Views: 132
    08-15-2014, 04:29 PM Go to last post
  4. [SOLVED] error installing shiny

    I am trying to learn shiny, but cannot install it. Error message below: I have never seen the error " installation of package ‘shiny’ had...

    Started by bugman‎, 08-12-2014 05:12 AM
    • Replies: 9
    • Views: 188
    08-15-2014, 02:50 AM Go to last post
  5. Ergm

    Hi, I have the following question: Does anybody know how are the p-values in the function ergm computed? Do you know a paper where I can read it?

    Started by A.C‎, 08-14-2014 12:52 PM
    • Replies: 2
    • Views: 101
    08-14-2014, 04:41 PM Go to last post
  6. probability plot in R

    Hello, everyone I am working on binary logistic regression and would like to draw probability graph varying the value of V62(a financial ratio...

    Started by t.wang21@yahoo.com.au‎, 08-07-2014 12:26 AM
    • Replies: 2
    • Views: 153
    08-13-2014, 11:38 PM Go to last post
  7. Korean letters are not displayed properly (broken) when connected to Database

    I have tried to import MS SQL Server data to R. At first, made a DSN and then made a code in Rstudio. As like...... > conn_mssql <-...

    Started by orestes‎, 08-13-2014 11:06 PM
    korean letter
    • Replies: 0
    • Views: 16
    08-13-2014, 11:06 PM Go to last post
  8. New 'averages' data set baed on column values

    Hello, I have a dataset (reproduced below) where I have three measures ('A', 'B', and 'C'), and each measure is other from a male or a female,...

    Started by deangelr‎, 08-13-2014 12:55 PM
    • Replies: 4
    • Views: 161
    08-13-2014, 05:16 PM Go to last post
  9. R -> Excel

    Hello, Does someone know how to export properly a matrix from R to Excel or CSV ? I know that I need to use write.csv() but it never gives a...

    Started by roukyno1‎, 07-17-2014 09:26 AM
    • Replies: 3
    • Views: 233
    08-13-2014, 01:13 PM Go to last post
  10. rpart gini classification help

    Hi Just having some issues building classification trees with rpart. I can reproduce my problem. First a successfully built tree: ...

    Started by wolfwoolford‎, 08-11-2014 07:29 PM
    r rpart classification c
    • Replies: 2
    • Views: 127
    08-12-2014, 07:52 AM Go to last post
  11. TARX: Threshold Autoregressive Model with exogenous variables

    Hey guys! Iam currently working on my bachelors thesis. I am comparing different methods for electricity price forecastings. The literature uses...

    Started by lamse‎, 08-09-2014 02:43 AM
    • Replies: 1
    • Views: 133
    08-10-2014, 04:50 PM Go to last post
  12. Efficient way to identify observations in plot of first two Principle Components?

    So I am doing a Principle Component Analysis to identify possible underlying population substructure for a "genetics analysis" I'm doing. Here is a...

    Started by BearJewJ‎, 08-07-2014 10:51 AM
    • Replies: 1
    • Views: 128
    08-07-2014, 12:26 PM Go to last post
  13. Question calculate marginal effects using mlogit package

    Hi R-users I try to calculate marginal effects of a multinomial logistic regression. To do this i use mlogit package and effects() function. ...

    Started by lmoulin‎, 06-07-2013 06:54 AM
    logit model, marginal effects, mlogit, multinomial regression
    • Replies: 8
    • Views: 1,541
    08-07-2014, 03:26 AM Go to last post
  14. Prediction using Support Vector (SV) method in R

    Dear Friends, I came to know that using SVM method we can predict the future value more accurately than other normal methods (like ARIMA). My...

    Started by mathan_leo‎, 08-05-2014 01:33 AM
    • Replies: 2
    • Views: 175
    08-06-2014, 01:20 AM Go to last post
  15. help needed to convert the date and clock time to hours, Thanks

    data = structure(list(ID = c(1544L, 1544L, 1544L, 1544L, 1544L, 1544L, 1544L, 1544L, 1544L, 1544L, 1544L, 1544L, 1544L, 1544L, 1544L, 1544L,...

    Started by zzz‎, 08-04-2014 05:29 PM
    • Replies: 3
    • Views: 151
    08-05-2014, 10:29 AM Go to last post
  16. Need Help doing adaptive lasso penalized regression from "lqa" package

    Hello, I need some help learning how to use the lqa package for doing penalized regression, in particular, I am trying to implement to "adaptive...

    Started by BearJewJ‎, 07-31-2014 12:50 PM
    • Replies: 1
    • Views: 154
    08-04-2014, 02:37 PM Go to last post
  17. probability graph varying the value of 1 continuous & 2 categorical variable?

    Hello, I have learnt how to create a probability graph varying the value of 1 continuous variable and 1 categorical variable. Below is an example in...

    Started by t.wang21@yahoo.com.au‎, 08-03-2014 08:40 PM
    • Replies: 2
    • Views: 135
    08-03-2014, 09:40 PM Go to last post
  18. NEW to R - Most efficient/fastest way to learn it?

    Hi everyone, I am new to this website and actually to such forums. I have tried to minimize my online presence as much as possible but now I am...

    Started by DataPilgrim‎, 07-31-2014 04:48 AM
    • Replies: 8
    • Views: 342
    08-03-2014, 08:44 PM Go to last post
  19. R Studio won't open

    Hi all, Question about R Studio. I downloaded R and R Studio a few months ago. When I first tried to use them, R Studio froze my computer and I...

    Started by JWFan‎, 07-27-2014 07:27 PM
    • Replies: 2
    • Views: 193
    08-01-2014, 05:40 PM Go to last post
  20. Testing normality for each grouped variable and evaluation

    Hello, I have data of 5 groups and when I do shapiro-wilk test for each object, some have normal distribution and some not. So can I say for these...

    Started by janea90‎, 07-31-2014 06:04 PM
    • Replies: 5
    • Views: 282
    08-01-2014, 09:34 AM Go to last post
  21. R graphs and capabilities

    Hello everyone, I am a MATLAB-user (in my previous work & education) but my company has R installed (and I don’t think there is the will to get...

    Started by miss_nike‎, 07-31-2014 08:49 AM
    excel, graphs, matlab, r software
    • Replies: 2
    • Views: 135
    07-31-2014, 09:29 AM Go to last post
  22. how to get a random sample with replacement

    Hello Guys, suppose I have the attached dataset: mydata<-structure(list(elevation = c(55.2879982, 92.2805023, 102.6689987, 58.2901993,...

    Started by gianmarco‎, 07-30-2014 05:56 AM
    • Replies: 2
    • Views: 139
    07-30-2014, 05:47 PM Go to last post
  23. Nested ANOVA evaluation in R

    hi, I have an experiment to check factors that influence the results of a measurement which is done like this: Several pieces of substrate are...

    Started by rogojel‎, 07-29-2014 12:42 AM
    anova, nested
    • Replies: 4
    • Views: 214
    07-29-2014, 02:47 PM Go to last post
  24. semi Markov for dummies

    Hello, I never worked with R till my supervisor asks me to run a semiMarkov analysis a month ago. After a long struggle, to date, the code works,...

    Started by MAP‎, 07-21-2014 08:43 AM
    • Replies: 4
    • Views: 304
    07-28-2014, 03:35 AM Go to last post
  25. Best way to store/organize data in R:

    Hello all, I know a lot of times when someone wants to learn a new programming language, the best way to do so is to just program. I've been...

    Started by APOCooter‎, 07-24-2014 11:01 PM
    • Replies: 0
    • Views: 198
    07-24-2014, 11:01 PM Go to last post
  26. Looking for R-specialist for potential collaboration

    Hello everybody! I am working on a research project intended to be published in a top-tier US journal. I don't want to get into details here, but...

    Started by kiton‎, 07-18-2014 10:51 AM
    2 Pages
    1 2
    • Replies: 25
    • Views: 732
    07-24-2014, 10:22 PM Go to last post
  27. R Graphics: Stacked area graph

    Hello everyone, I would like to generate a stacked area graph about species abundances along a river (river km). Instead of stacking the values...

    Started by Protonemura‎, 07-24-2014 08:38 AM
    • Replies: 0
    • Views: 123
    07-24-2014, 08:38 AM Go to last post
  28. Cumulative Hazard from coxph object with null offset?

    Hi everyone, I have a little doubt here. When I do something like: ...

    Started by JBrettas‎, 07-23-2014 06:11 PM
    • Replies: 0
    • Views: 126
    07-23-2014, 06:11 PM Go to last post
  29. Help needed: Kernel density estimate on an image

    Hey all, I'm new to R and I need help if anyone could give an advice. I need to do Kernel density estimate on an image which basically consists of...

    Started by koronfelina‎, 07-23-2014 04:17 PM
    • Replies: 0
    • Views: 108
    07-23-2014, 04:17 PM Go to last post
  30. R time series

    Hi,I am looking for a way to compare between several Databases of travel time from one point to another in order to find if there is a statistic...

    Started by GiladAnat‎, 07-23-2014 03:30 AM
    • Replies: 2
    • Views: 201
    07-23-2014, 08:02 AM Go to last post
  31. Hi

    Hello everyone, I'm a new R user and I want to do autocorrelation, convert to log returns, do difference returns on my data. How do I do all this and...

    Started by Bisola‎, 07-20-2014 12:52 AM
    • Replies: 1
    • Views: 243
    07-20-2014, 11:26 AM Go to last post
  32. Question Multiple ANOVA on a data frame -- R statistics

    Hello, I am wondering how I can do a multiple ANOVA on a data.fram and write/record p-values for each test in a list or a new variable in my data...

    Started by swordfish‎, 11-21-2010 04:21 PM
    • Replies: 10
    • Views: 3,967
    07-18-2014, 12:42 PM Go to last post
  33. A color for two condition

    Hello, Can you help me to set up a specific color when two conditions are met, I would like to color in red the points in my scatter plot when...

    Started by robinmes‎, 07-18-2014 05:33 AM
    • Replies: 1
    • Views: 135
    07-18-2014, 06:07 AM Go to last post
  34. how to edit ROC curve generated by R?

    I have had R generate ROC curve for me and then copy it as metafile and paste it in word doc. To change false positive rate into 1-specificity in x...

    Started by t.wang21@yahoo.com.au‎, 07-16-2014 08:50 PM
    • Replies: 6
    • Views: 198
    07-16-2014, 10:44 PM Go to last post
  35. Bagging predictions with binary response variable in R

    I am trying to use the bagging technique to increase my model's predictive power. My response variable, status, is a binary variable where 0...

    Started by randomcat‎, 07-15-2014 08:05 PM
    bagging, classification
    • Replies: 4
    • Views: 225
    07-15-2014, 08:46 PM Go to last post
  36. rpart function: how to know the % of correct classification at every terminal node?

    I have a dataset with 277 observations.I have binary response variables i.e, 0 indicates no disease, and 1 indicates disease. I know that 180 of the...

    Started by randomcat‎, 07-14-2014 03:32 AM
    classification, classification-tree
    • Replies: 1
    • Views: 221
    07-15-2014, 03:49 PM Go to last post
  37. splitting a dataset in two parts (of different size)

    Hello Guys! Suppose I have a dataset (part of it is appended below) and that I wish to split it in two parts (to be used as training sample and...

    Started by gianmarco‎, 07-15-2014 01:25 AM
    • Replies: 5
    • Views: 234
    07-15-2014, 01:03 PM Go to last post
  38. How to view the resulting tree using the bagging function in R?

    I constructed a tree with the `rpart` function. Then I can plot it to look at the tree visually and also look at what % of the observations were...

    Started by randomcat‎, 07-15-2014 01:22 AM
    bagging, classification, classification-tree
    • Replies: 3
    • Views: 182
    07-15-2014, 04:36 AM Go to last post
  39. auto.arima function (in R) and Box&Jenkins method

    I already posted that question on the Statistics portion of the forum : Hello, How is it possible that the auto.arima function in R (which...

    Started by roukyno1‎, 07-10-2014 04:34 AM
    • Replies: 14
    • Views: 364
    07-15-2014, 02:56 AM Go to last post
  40. Converting count data into binary data

    Hi everyone, i have count outcome data{0,1,2,3,} and I would like to reconstruct it using 0=absence and >0= presence I have tried to use the...

    Started by Mona‎, 07-13-2014 08:15 AM
    • Replies: 1
    • Views: 237
    07-13-2014, 11:04 AM Go to last post
  41. Can you trust the internet?

    question arose. I do not like that on the Internet everything is publicly available. How can information be protected?

    Started by gerberkon‎, 04-01-2014 04:48 PM
    • Replies: 3
    • Views: 172
    07-13-2014, 07:53 AM Go to last post
  42. Edit/Recode Data

    Hi guys, I scoured the internet about this, but I can't seem to find a straight answer. Is there a way to edit and recode multiple data points in...

    Started by gene2420‎, 07-09-2014 01:29 PM
    • Replies: 1
    • Views: 112
    07-12-2014, 05:10 PM Go to last post
  43. Regression -help with R codes

    Hi everyone, This is could be very basic but I'm really struggling with biostatistic using R-programming and I would really appreciated if...

    Started by Mona‎, 07-12-2014 04:17 PM
    • Replies: 1
    • Views: 234
    07-12-2014, 04:51 PM Go to last post
  44. Question Syntax error: Error in sqliteExecStatement

    Hi guys, I have the following problem: I am trying to do a multinomial logistic regression on a very large dataset. My dataset has 6 columns...

    Started by Bianca‎, 07-10-2014 02:41 AM
    database, large data sets, multinomial regression, sqlite, syntax
    • Replies: 1
    • Views: 163
    07-12-2014, 03:43 PM Go to last post
  45. Create special matrix

    Hi, I'm trying to build a function for constructing special matrix according to the following example. suppose the function gets as input: m=0...

    Started by LiorN‎, 07-11-2014 07:26 AM
    • Replies: 1
    • Views: 193
    07-12-2014, 02:02 PM Go to last post
  46. Loop through values - only first element is used

    Hi everybody, i feel this is very baisc but i need a hand. I want to use the strsplitfunction on characters in a data.frame but under certain...

    Started by tester1234‎, 06-29-2014 01:51 AM
    ifelse, loop, nested
    • Replies: 9
    • Views: 390
    07-11-2014, 03:22 PM Go to last post
  47. R subtract value from row above

    Hi I want to do a row-wise subtraction which is very easy in excel: A B 1 . 4 3 (4-1) 5 1 (5-4) 2 -3 (2-5) 3 1 5 2 9 4

    Started by toothpicky‎, 07-10-2014 07:05 PM
    • Replies: 2
    • Views: 209
    07-10-2014, 07:48 PM Go to last post
  48. Awful data munging problem

    So here is the situation. I have meta data as follows (dput at end - they may not be overly helpful as I cannot provide full data for privacy...

    Started by Lazar‎, 07-09-2014 08:20 PM
    • Replies: 3
    • Views: 213
    07-10-2014, 02:17 AM Go to last post
  49. Suppose we like to see two separate graphs together?

    In R or Rstudio. sometimes we like to store two graphs in one screen so that we can choose any one out of two, by clicking. For example, first...

    Started by jk90029‎, 07-09-2014 03:55 AM
    • Replies: 3
    • Views: 201
    07-09-2014, 01:01 PM Go to last post
  50. Anyone have used locator() or identify()?

    For example, let a plot has three letters, such as CA, NY, IL 1) Page 1, plot() is shown as graph in one page 2) Page 2, there is a specific CA...

    Started by jk90029‎, 07-09-2014 03:00 AM
    • Replies: 0
    • Views: 136
    07-09-2014, 03:00 AM Go to last post
  51. To send a new graph, to a file, instead of seeing at screen?

    Dear- Most time we see the output of a graph result, at the monitor screen. plot( c(1,3,2), type="l" ) Now instead of that, 1) We hope to...

    Started by jk90029‎, 07-08-2014 01:19 AM
    • Replies: 3
    • Views: 197
    07-09-2014, 02:53 AM Go to last post
  52. Separate graphs

    Hi everyone, as I wrote in the title, I need to separate 2 different functions from the same graph. I mean, I obtained the graph attached as a result...

    Started by puvio‎, 07-04-2014 09:03 AM
    • Replies: 0
    • Views: 216
    07-04-2014, 09:03 AM Go to last post
  53. Problems transposing a file in R...

    I'm trying to transpose a file in R, I have the file in .dat or .txt format and it won't transpose properly with either. Basically, it's a...

    Started by vg_87‎, 07-03-2014 08:48 AM
    • Replies: 2
    • Views: 276
    07-04-2014, 08:32 AM Go to last post
  54. What's the R command that shows the components of a function?

    fit=lm(y~x) And I remember there's an R command that lists out the components of a function. So if I were to use Rcommand(fit), the console would...

    Started by randomcat‎, 07-02-2014 12:13 PM
    • Replies: 2
    • Views: 223
    07-02-2014, 01:15 PM Go to last post
  55. Error in is.constant(y) : (list) object cannot be coerced to type 'double'

    I have a sample file that I am using to forecast as a panel series. The steps followed are 1. library(plm) 2. library(Formula) ...

    Started by r_learner_01‎, 06-30-2014 10:00 AM
    • Replies: 3
    • Views: 385
    07-02-2014, 06:51 AM Go to last post
  56. R is slow

    Hello, does anybody have the experience of running R and wait a long long time before it finally stops and show the result? I am a freshman and...

    Started by chan‎, 06-30-2014 10:40 AM
    • Replies: 6
    • Views: 357
    07-02-2014, 05:38 AM Go to last post
  57. [Package popularity?] Code to estimate R package popularity

    In answer to Trinkers question here: http://stackoverflow.com/questions/10159249/determine-number-of-package-downloads I have the following code...

    Started by TheEcologist‎, 12-11-2013 10:57 AM
    • Replies: 12
    • Views: 609
    07-01-2014, 01:54 PM Go to last post
  58. How to write loop sentence to skip some certain value in the loop

    Hello, I try to make for to do loops not in a continuous way, but in specific number. For instance, I try to make R does the loop when j=certain...

    Started by chan‎, 06-30-2014 10:19 PM
    • Replies: 2
    • Views: 210
    06-30-2014, 11:37 PM Go to last post
  59. glmulti for zero-truncated data

    Hi, I'm using glmulti to get the best glm model for zero-truncated poisson distribution, but it doesn't work. My response variable is positive...

    Started by Jundi‎, 06-29-2014 11:21 PM
    • Replies: 0
    • Views: 236
    06-29-2014, 11:21 PM Go to last post
  60. how to prune a decision tree

    I have 12,500 observations and 12 explanatory variables. I want to build a decision tree with pruning using the rpart function and then the prune...

    Started by mamus‎, 06-28-2014 09:49 AM
    • Replies: 3
    • Views: 343
    06-29-2014, 11:28 AM Go to last post

+ Post New Thread
Page 1 of 49 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 ... LastLast

Thread Display Options

Use this control to limit the display of threads to those newer than the specified time frame.

Allows you to choose the data by which the thread list will be sorted.

Order threads in...

Note: when sorting by date, 'descending order' will show the newest results first.

Icon Legend

Contains unread posts
Contains unread posts
Contains no unread posts
Contains no unread posts
More than 15 replies or 300 views
Hot thread with unread posts
More than 15 replies or 300 views
Hot thread with no unread posts
Closed Thread
Thread is closed
Thread Contains a Message Written By You
You have posted in this thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts






Advertise on Talk Stats