1. 10-14-2010
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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
    24 Pages
    1 2 3 ... 24
    • Replies: 350
    • Views: 53,708
    07-01-2015, 01:03 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
    6 Pages
    1 2 3 ... 6
    • Replies: 77
    • Views: 23,876
    06-28-2015, 12:32 PM Go to last post
  3. 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: 1
    • Views: 7,684
    06-04-2015, 08:01 AM Go to last post
  4. 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
    • Replies: 107
    • Views: 24,705
    11-22-2014, 08:28 AM 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
    19 Pages
    1 2 3 ... 19
    • Replies: 273
    • Views: 55,359
    10-20-2014, 10:21 AM 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
    • Replies: 99
    • Views: 40,203
    05-22-2014, 02:07 AM Go to last post
  1. 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, Yesterday 07:06 PM
    • Replies: 0
    • Views: 91
    Yesterday, 07:06 PM Go to last post
  2. Can I customize what box-whiskers plots show?

    Hi there, I'm kind of new to R and am trying to recreate a figure I did with a program I no longer have a license for. What I need, is a...

    Started by omolnar‎, 07-02-2015 11:10 AM
    • Replies: 2
    • Views: 107
    Yesterday, 04:39 AM Go to last post
  3. Trimmed Spearman_karber Method using r for dose response analysis - Help needed!!!

    Please could anyone show me how to go about using r to LC50 and Confidence intervals with Trimmed Spearman-Karber method? I have had several go at...

    Started by Kingmax‎, 06-27-2015 03:51 AM
    confidence intervals, drc, lc50 ratio test
    • Replies: 7
    • Views: 192
    Yesterday, 04:13 AM Go to last post
  4. 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, Yesterday 02:42 AM
    • Replies: 0
    • Views: 54
    Yesterday, 02:42 AM Go to last post
  5. Comparing coefficents in different moodels

    Hi All, I want to compare the effect of distance to the nearest university versus distance to the nearest Ivy league university on college...

    Started by Lazar‎, 06-30-2015 06:58 PM
    • Replies: 3
    • Views: 151
    Yesterday, 01:25 AM Go to last post
  6. I need hand holding to learn how to run GLM in R.

    I have RStudio and RRO installed but run into problems not addressed in help videos I've tried to follow. Loading my 698-case set with 13 variables...

    Started by nanosteve‎, 07-02-2015 03:19 PM
    help run glm rstudio asap
    • Replies: 3
    • Views: 124
    07-02-2015, 07:48 PM Go to last post
  7. Categorization using R

    Hello , I am relatively new at using R. I have a dataset of around 5000 datapoints. My goal is to predict a category using the comments...

    Started by ankangaur‎, 07-02-2015 10:51 AM
    • Replies: 3
    • Views: 104
    07-02-2015, 01:29 PM Go to last post
  8. 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: 6
    • Views: 163
    07-02-2015, 01:54 AM Go to last post
  9. Exclamation installing rpud got unrecognized option '-Wl'

    I am trying to install the package rpud on a CENTOS Linux server and got the following error: /usr/local/cuda/bin/nvcc -shared -Xlinker "...

    Started by LEBRoger‎, 05-09-2013 11:43 AM
    installation, package, r ld rpud -wl linker, r-lang
    • Replies: 8
    • Views: 1,464
    07-01-2015, 12:15 PM Go to last post
  10. Question How plot a time series?

    Hello, I am new to R and I am trying to do a very simple thing, but I need your help. I have a time series of temperature from 1950 until 2013,...

    Started by paopao87‎, 06-30-2015 02:44 PM
    seasonality series plot r
    • Replies: 1
    • Views: 76
    06-30-2015, 06:31 PM Go to last post
  11. How to calculate Tilted bootstrap confidence intervals using the boot R package?

    I'm running a simulation where I'm interested in comparing the accuracy of tilted bootstrap confidence intervals versus regular percentile confidence...

    Started by BearJewJ‎, 06-30-2015 03:29 PM
    • Replies: 0
    • Views: 67
    06-30-2015, 03:29 PM Go to last post
  12. Propagate error with prediction interval

    I have a linear dataset with known values of X & Y in R. I treat the dataset as a linear model. I have a data point with a known value of X and an...

    Started by PropagationHelp‎, 06-28-2015 01:32 PM
    error propagation, linear regression, prediction-intervals, r package
    • Replies: 0
    • Views: 112
    06-28-2015, 01:32 PM Go to last post
  13. Tvecm

    I am trying to estimate a threshold error correction model that uses an exogenous variable as the threshold variable. Does anyone know how to do...

    Started by seeker of help‎, 06-24-2015 11:11 PM
    regime switching ecm, tvecm
    • Replies: 0
    • Views: 152
    06-24-2015, 11:11 PM Go to last post
  14. How to plot a LOVE plot

    Hi I am estimating propensity score and I would like to check my covariance balance by a LOVE plot (I do know, you can check it in other ways but I...

    Started by CatrinWessman‎, 06-24-2015 03:56 AM
    love plot
    • Replies: 1
    • Views: 174
    06-24-2015, 05:02 AM Go to last post
  15. geom_smooth

    hey! I have a problem with geom_smooth function. The default method for n>1000 obs. is gam. For fun, I tried other methods, including the default...

    Started by purifyz‎, 06-23-2015 02:48 PM
    • Replies: 1
    • Views: 158
    06-23-2015, 06:48 PM Go to last post
  16. Minimum mutual information algorithm

    Hello all, I'm just wondering if an R package or script is floating around for finding the first minimum mutual information of self-paired...

    Started by dcmetz‎, 06-23-2015 12:11 PM
    attractors, chaos, dynamical systems, information
    • Replies: 1
    • Views: 110
    06-23-2015, 12:40 PM Go to last post
  17. Graph labelling

    I have attached a file. In the plot. I want to add a title to the whole 4 plot. Not one for each but 1 for all on the top. Also I want to label them...

    Started by Mr Good News‎, 06-21-2015 10:10 PM
    • Replies: 2
    • Views: 185
    06-22-2015, 08:40 PM Go to last post
  18. Bootstrap

    I implemented an EM algorithm to estimate means and variances, but now I need to implement a bootstrap procedure to estimate the variance of these...

    Started by askazy‎, 06-20-2015 09:36 PM
    • Replies: 3
    • Views: 238
    06-21-2015, 09:13 PM Go to last post
  19. The Kolmogorov-Smirnov test (ks.test)

    Hi all and thanks for reading. My question regards the ks.test function in R. I seem to be getting some strange results in the output and after...

    Started by cruzeconomics‎, 06-21-2015 01:21 PM
    • Replies: 0
    • Views: 120
    06-21-2015, 01:21 PM Go to last post
  20. problem with plot a fit line in nls

    Hi all, I am having problems for add a line to scatter plot, my data fit to a exponential model, I used nls to get coeficients fit <-...

    Started by Rodrigo Badilla Cabrera‎, 06-19-2015 12:10 PM
    • Replies: 0
    • Views: 146
    06-19-2015, 12:10 PM Go to last post
  21. Question Please help: Reshaping a list of named character vectors to data frame

    Ok, so imagine I create the following: > list1 <- c("data-element1", "data-element2", "data-element3") > list2 <- c("data-element4",...

    Started by daw‎, 06-17-2015 01:46 PM
    • Replies: 2
    • Views: 183
    06-18-2015, 08:13 AM Go to last post
  22. problem in extracting z value from 'coin' package's wilcox_test()

    Hello, I was wondering if is it possible to extract the z value from the results of the Mann-Whitney test as returned by the 'coin' package's...

    Started by gianmarco‎, 06-18-2015 02:31 AM
    • Replies: 1
    • Views: 127
    06-18-2015, 02:38 AM Go to last post
  23. R reorder: Error in length(H)

    I tried to run the command: ii <-factor(c(1,2,3)) iii <- reorder(ii) However, I get the error statement: Error in length(H) : 'H' is...

    Started by nmch‎, 06-17-2015 03:55 PM
    • Replies: 4
    • Views: 152
    06-17-2015, 06:50 PM Go to last post
  24. Confirmatory factor analysis error message

    Hi, I'm new to R and I'm attempting to run a CFA model using the lavaan package. So far I have imported my data from SPSS and specified my model...

    Started by Fran.c‎, 06-17-2015 05:56 AM
    cfa, error, error message, lavaan
    • Replies: 1
    • Views: 110
    06-17-2015, 06:10 AM Go to last post
  25. partitioning variance in the polr command

    I am using ordinal regression (MASS package, polr command) to analyze ranked coloration data (% piebaldism) of an iguana species based on sex,...

    Started by acampbell‎, 06-16-2015 07:36 PM
    mass package, ordinal regression, polr
    • Replies: 0
    • Views: 93
    06-16-2015, 07:36 PM Go to last post
  26. R: Weighted nls fit of multiple datasets with nested paramaters

    I have a number of datasets that I'd like to fit with a model of the form a*(x+b)^c where b, c are common to each dataset with only the...

    Started by prsofinterest‎, 06-15-2015 01:42 PM
    • Replies: 0
    • Views: 178
    06-15-2015, 01:42 PM Go to last post
  27. Exclamation Error in ginv(A) : 'X' must be a numeric or complex matrix

    Dear all, this is my first post here! :wave: I encountered a problem that has been bugging me for some hours, and I still haven't managed to come...

    Started by BillyPilgrim‎, 06-14-2015 03:19 AM
    • Replies: 1
    • Views: 191
    06-14-2015, 04:52 AM Go to last post
  28. column spanning in Markdown

    Hi all, I have a table as follows: tmp <- structure(list(mean = c(2.2799823633157, 1.75434618291761, 1.96957671957672, 1.35482804232804,...

    Started by Lazar‎, 06-11-2015 06:12 PM
    • Replies: 5
    • Views: 307
    06-14-2015, 03:58 AM Go to last post
  29. marginal effects at sample mean

    So I have fit a negative binomial model with the lme4 so glmer.nb function. So I have the results fine. The question then is how to get marginal...

    Started by Lazar‎, 06-11-2015 06:32 PM
    • Replies: 0
    • Views: 132
    06-11-2015, 06:32 PM Go to last post
  30. Interpreting Odds Ratios For Logistic Regression

    Hello, I just developed a logistic regression model predicting customer churn (i.e how likely is a customer to leave us in the future?) To...

    Started by pandyav‎, 06-11-2015 01:27 PM
    • Replies: 1
    • Views: 135
    06-11-2015, 03:24 PM Go to last post
  31. Getting Data From SharePoint

    I'm trying, and so far failing, to extract data from a very large SharePoint list. I have a URL for getting XML from sharepoint: ...

    Started by daw‎, 06-11-2015 01:19 PM
    • Replies: 0
    • Views: 128
    06-11-2015, 01:19 PM Go to last post
  32. One-mode network (Data preparation)

    Hello, I'm looking for a solution to perform network analysis among my data set. My database is shaped like this : Table 1 : ...

    Started by Bryoman‎, 06-08-2015 03:16 AM
    • Replies: 4
    • Views: 217
    06-11-2015, 02:34 AM Go to last post
  33. 'unexpected result from lpSolveAPI for primal test' error for Logistic Regression

    Hello, I am trying build a logistic regression model in R and I am also using 'safeBinaryRegression' package. When I enter the my model code and...

    Started by pandyav‎, 06-10-2015 04:15 PM
    • Replies: 1
    • Views: 163
    06-10-2015, 09:52 PM Go to last post
  34. Learning R.

    I know we have a monstrous thread on this, but if you had to pick one source and had essentially zero knowledge of R, what would the best source to...

    Started by noetsi‎, 06-04-2015 04:44 PM
    • Replies: 6
    • Views: 321
    06-10-2015, 01:19 PM Go to last post
  35. Legal Code License for a package

    Hello, I was wondering to know more about 'Legal Code License' for R packages. In particular, I was asked under what LCL a package of mine is. Note...

    Started by gianmarco‎, 06-10-2015 11:53 AM
    • Replies: 1
    • Views: 97
    06-10-2015, 01:11 PM Go to last post
  36. Extreme Value Analysis - how to use the R package extRemes

    Hello, I am completely new to R and I desire to analyse two different time series of temperature and precipitation with the R package extRemes. ...

    Started by paopao87‎, 06-10-2015 03:01 AM
    extremes return level
    • Replies: 0
    • Views: 105
    06-10-2015, 03:01 AM Go to last post
  37. date/time data import from excel

    The date/time data imported using readWorksheetFromFile function from XLConnect package is not correct. For example: In my excel.xlsx, I got...

    Started by VivianLee‎, 06-03-2015 02:36 AM
    • Replies: 8
    • Views: 371
    06-09-2015, 02:18 AM Go to last post
  38. hist on time

    I'm a total newbee to R and wonder how can I use hist with a vector consisting of marathon finishing times (e.g 3:03:03 ...) I got the message...

    Started by Runner42195‎, 06-07-2015 12:02 PM
    • Replies: 13
    • Views: 367
    06-08-2015, 01:29 PM Go to last post
  39. Which cluster analysis methods to use to analyze purchase behavior with time?

    Hello everyone, I quite new to cluster analysis, but read through a fair amount of material, still I'm puzzled with the following task. ...

    Started by sinandrei‎, 06-05-2015 02:50 PM
    cluster, cluster analysis, latent class analysis lca, segmentation
    • Replies: 2
    • Views: 276
    06-08-2015, 12:25 PM Go to last post
  40. GARCH modelling and forecasting

    Hi, I have a few questions regarding GARCH modelling and forecasting and it would be great if someone could help me. I am modelling oil spot...

    Started by pd811‎, 06-02-2015 07:18 AM
    forecasting, garch, modelling
    • Replies: 1
    • Views: 149
    06-07-2015, 05:22 PM Go to last post
  41. reshaping dataframe to matrix

    Hello, I am admittedly very dumb when it comes at reshaping data in R. So, I would appreciate to have some suggestion on what follows. I got the...

    Started by gianmarco‎, 06-04-2015 02:17 AM
    • Replies: 7
    • Views: 214
    06-04-2015, 11:03 AM Go to last post
  42. Problem with category names in PCAmix

    Hello there, first, I'm really new to R and mainly need to use it for a multiple correspondence analysis with rotation. I have converted my...

    Started by gnr1‎, 05-06-2015 04:45 AM
    • Replies: 1
    • Views: 253
    06-04-2015, 05:26 AM Go to last post
  43. compare areas under ROC curve of logit and neural networks

    Hello, everyone, I am currently estimating logit models using R and neural networks using SPSS. I need to compare the areas under ROC curve of logit...

    Started by t.wang21@yahoo.com.au‎, 06-04-2015 01:04 AM
    • Replies: 0
    • Views: 101
    06-04-2015, 01:04 AM Go to last post
  44. K-means clustering

    Is there any algorithm to find the value of 'k' in k-means clustering for a big data set?

    Started by Chirantha89‎, 06-03-2015 03:41 AM
    clustering, r programming
    • Replies: 10
    • Views: 242
    06-03-2015, 12:58 PM Go to last post
  45. 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: 9
    • Views: 801
    06-03-2015, 11:27 AM Go to last post
  46. PopGenome input file

    Hi, I want to do some population genetic analysis using PopGenome, but my data files(SNPs) are in plink format. Please tell me how to obtain input...

    Started by meraj‎, 06-03-2015 12:59 AM
    • Replies: 0
    • Views: 131
    06-03-2015, 12:59 AM Go to last post
  47. how to split and cut (big data)

    Hello, I have table: 3 cols and over 300k rows. Col1 - ID (numeric id, ex: 123456) Col2 - Numb (numeric from 1 to 25, ex: 1) Col3 - Yes/no (0...

    Started by natus vincere‎, 06-01-2015 09:38 AM
    cut, dataframe, split, table, table merge
    • Replies: 3
    • Views: 271
    06-02-2015, 11:19 AM Go to last post
  48. subset

    V. basic Q, but I have a csv file loaded with 168 observations. I'd like to do similar analyses on observations 1-140 and 141-168. I assume there's a...

    Started by tays01s‎, 06-02-2015 09:05 AM
    • Replies: 0
    • Views: 130
    06-02-2015, 09:05 AM Go to last post
  49. Question Bootstrapping test statistics with panel data and SUR

    As a newbie to bootstrapping, I'm having some trouble with developing with critical wald test scores for every observation in my panel dataset. I'm...

    Started by Daan Bovenberg‎, 06-02-2015 05:58 AM
    bootstrapping, panel data, test statistic, wald test
    • Replies: 0
    • Views: 106
    06-02-2015, 05:58 AM Go to last post
  50. mlogit.data - Error in `row.names

    Hello everyone, I am doing a discrete choice analysis in my master thesis, and have run into trouble with the mlogit-package when setting the...

    Started by hbrandi‎, 05-26-2015 06:16 AM
    • Replies: 1
    • Views: 185
    06-02-2015, 05:32 AM Go to last post
  51. Wallraff Test / Circular Statistics

    Hello! Is anyone familiar with using the wallraff test from the circular.package? Depending on which source I use (circular.pdf or the circular...

    Started by DIversity‎, 06-02-2015 04:17 AM
    • Replies: 0
    • Views: 101
    06-02-2015, 04:17 AM Go to last post
  52. Post finding the best fit and removing outliers with MARS regression

    I using the regression method called `MARS`, in `R` is it called `earth` and is located in the package `earth`, in order to find the best regression...

    Started by paul15071992‎, 06-01-2015 08:31 AM
    fit, multivariate regression, outlier detection, regression
    • Replies: 2
    • Views: 163
    06-01-2015, 10:47 AM Go to last post
  53. Implementing non-parametric version of 2x2 Repeated Measures ANOVA in R

    Hi, I have a 2x2 repeated measures design (i.e. 1 group of participants provide data for all 4 conditions in a fully factorial counterbalanced design...

    Started by RobH‎, 12-07-2011 05:34 AM
    factorial anova, non-parametric anova, r software, repeated-measures, two-way
    • Replies: 10
    • Views: 4,077
    06-01-2015, 05:26 AM Go to last post
  54. Error when using normality tests (Tapply)

    Hello, Recently I have been using R for an assessment item for a university project. The project entailed the students to gather data and...

    Started by Elderberrian‎, 05-30-2015 07:23 AM
    • Replies: 2
    • Views: 259
    05-30-2015, 12:48 PM Go to last post
  55. Storing in pdf format, together with seeing the graph, in RStudio window

    Dear- We all know how to use pdf() to store a graph. Now, in order to save time in clicking, is it possible to 1) draw a graph in pdf format...

    Started by jk90029‎, 05-30-2015 04:44 AM
    • Replies: 1
    • Views: 165
    05-30-2015, 10:50 AM Go to last post
  56. 'corrplot' error: color limits should cover matrix

    Hello! I have been unsuccessful in wrapping my head around the error message I got from the 'corrplot' function of the 'corrplot' package. ...

    Started by gianmarco‎, 05-30-2015 03:11 AM
    • Replies: 6
    • Views: 233
    05-30-2015, 09:51 AM Go to last post
  57. Data mining Facebook Using R

    Hi everyone, today I will post my tutorial to show you how to create those beautiful charts from what you get from facebook API. Here is my...

    Started by bobbymistery‎, 05-30-2015 07:27 AM
    • Replies: 0
    • Views: 160
    05-30-2015, 07:27 AM Go to last post
  58. 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: 0
    • Views: 193
    05-29-2015, 06:22 AM Go to last post
  59. Calculate prediction values for linear curve estimation for next 5 intervals

    Hi, I have another query : I want to calculate prediction values for linear curve estimation for next 5 intervals. Example : Suppose i have a...

    Started by sajalgoel‎, 05-28-2015 08:07 AM
    • Replies: 2
    • Views: 207
    05-29-2015, 12:37 AM Go to last post
  60. import excel colour coded cells including its colour

    Hi, I am totally new to R. I wondering if R can import the cell background colour of the excel file? Trying to create a piece of code to extract...

    Started by VivianLee‎, 05-28-2015 08:53 AM
    • Replies: 4
    • Views: 262
    05-28-2015, 08:23 PM Go to last post

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