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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: 271,275
    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: 112,314
    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: 13,555
    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: 117,325
    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: 256,927
    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: 124,727
    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: 26,223
    10-17-2012, 07:20 PM Go to last post
  1. grep in R

    how do I select 3318 from the following variable name: 20150812_Founds-1_3318_01.RCC vs. Reference ? i know that i should use sub() or...

    Started by lydiajones94‎, 04-22-2016 08:53 PM
    • Replies: 6
    • Views: 1,821
    04-23-2016, 12:40 PM Go to last post
  2. R warning : the condition has length > 1 and only the first element will be used

    I have data like following : year month day y 2007 7 1 3845 2007 7 2 3756 2007 7 3 3564 . . . 2007 ...

    Started by Cynderella‎, 04-22-2016 09:18 AM
    r code
    • Replies: 4
    • Views: 2,817
    04-22-2016, 11:10 PM Go to last post
  3. Finding and assigning runs

    I have this data frame (over 2500000 rows long): chr pos med insert_count nucsomeI_group 1 I 1 0 0 low 2 I 2 ...

    Started by Prometheus‎, 04-20-2016 11:23 AM
    • Replies: 5
    • Views: 1,252
    04-21-2016, 03:56 PM Go to last post
  4. nlme arguments explained

    Hi All, I'm trying to run an nlme on some data looking at the nonlinear response (in this case 'distance', but will also use for 'weight') of...

    Started by han8‎, 04-20-2016 09:24 PM
    mixed effects model, nlme, nonlinear, repeated measures, rstats
    • Replies: 0
    • Views: 881
    04-20-2016, 09:24 PM Go to last post
  5. Handeling big datasets

    Hi, I have an excelsheet with 5131 rows and many columns. Each row is e.g. one stomach with information on year, month, station, fishlength,...

    Started by Anne3‎, 04-11-2016 03:38 AM
    • Replies: 2
    • Views: 1,420
    04-19-2016, 04:34 PM Go to last post
  6. post-hoc interaction following lme with both categorical and continuous factors.

    Hello, I'm relatively new to R and have run into some problems. Hoping someone can help! I'm using lme on a model with several, both...

    Started by maryska‎, 04-17-2016 09:47 AM
    continuous data, interaction, lme, post hoc
    • Replies: 0
    • Views: 2,730
    04-17-2016, 09:47 AM Go to last post
  7. Degree correlation of network

    I'm trying to analyze the degree correlation of a given network and I can't understand what is the best way to do it. With degree correlation I...

    Started by gey‎, 04-15-2016 01:52 PM
    • Replies: 0
    • Views: 1,181
    04-15-2016, 01:52 PM Go to last post
  8. Angry Bootstrapping code help needed in r??

    Hello friends. So I am ready to jump off a building because I cannot figure out this code for my LIFE. Everytime I run it, I get the standard error...

    Started by statzis2lit‎, 04-14-2016 04:01 PM
    bootstrap, bootstrapping, bootstrapping code, r coding
    • Replies: 0
    • Views: 1,900
    04-14-2016, 04:01 PM Go to last post
  9. Computing coverage probability for a Wald interval

    Hey, I need help computing the coverage probability for a Wald interval. So far I have the following R-code but the bold parts seem to be causing me...

    Started by mailrenegade‎, 04-13-2016 11:37 AM
    • Replies: 0
    • Views: 3,127
    04-13-2016, 11:37 AM Go to last post
  10. Shiny + DiagrammeR

    Hi all: I'm trying to develop a small Shiny app that uses DiagrammeR to create flowcharts. I want to be able to customize the label that appears...

    Started by jamesmartinn‎, 04-13-2016 08:15 AM
    • Replies: 0
    • Views: 1,957
    04-13-2016, 08:15 AM Go to last post
  11. initializing a large data frame

    I want to create an empty data frame with a certain number of rows and columns, with different columns having different classes. I could do something...

    Started by efoss‎, 04-09-2016 03:08 PM
    • Replies: 1
    • Views: 1,330
    04-12-2016, 08:48 PM Go to last post
  12. [R - nlme] non-linear regression Michaelis-Menten model

    Hello, I am attempting to model Michaelis-Menten uptake kinetics to predict denitrification rates (response) across a gradient of nitrate loading...

    Started by ss18‎, 04-12-2016 08:17 AM
    michaelis-menten, mixed effects model, nlme, pseudoreplication
    • Replies: 0
    • Views: 1,328
    04-12-2016, 08:17 AM Go to last post
  13. [R] solving differential equation for water content and concentration in soil

    I am using R to solve a set of differential equations using the package deSolve. The variables are WC and C, which stand for the water content and a...

    Started by pastequeman‎, 04-12-2016 03:33 AM
    desolve, differential equation, ode
    • Replies: 0
    • Views: 859
    04-12-2016, 03:33 AM Go to last post
  14. Time series in small data with R

    Hi there I have this data year number of surgeries 2000 570 2005 1340 2006 4730 2007 5359 2009 6060 2010 6340...

    Started by leili62‎, 04-11-2016 07:24 AM
    neural networks, small data set, svm, time series
    • Replies: 4
    • Views: 1,843
    04-11-2016, 03:56 PM Go to last post
  15. Models comparison with AIC

    Hi everyone, I’m working on a spatial point pattern analysis with the spatstat package in R. I would like to compare the goodness-of-fit of...

    Started by RoxaneBe‎, 04-09-2016 06:17 AM
    • Replies: 0
    • Views: 2,267
    04-09-2016, 06:17 AM Go to last post
  16. plotly won't publish

    Hi! I've been playing around with plotly and have some neat graphs I want to upload to my online (free) account. I seem to be getting an error...

    Started by jamesmartinn‎, 04-04-2016 12:52 PM
    • Replies: 1
    • Views: 4,066
    04-06-2016, 07:13 AM Go to last post
  17. How to prepare predictive model in R for future defect capability process ?

    Hi there, I'm a newbie of R language and predictive analytics but I have a solid foundation of Business Intelligence and Data warehouse field. ...

    Started by octoni‎, 04-02-2016 04:15 AM
    capability process, cpk, defect, predictive analytics, six sigma
    • Replies: 0
    • Views: 1,053
    04-02-2016, 04:15 AM Go to last post
  18. R Coding Questions (Fitting log SLR onto normal scale)

    Hey guys I'm having trouble with R and which codes to use(Newbie): So I have some data, I've performed a simple linear regression (SLR), however...

    Started by yomamg‎, 04-01-2016 11:35 PM
    assignment, codes, r code
    • Replies: 0
    • Views: 1,482
    04-01-2016, 11:35 PM Go to last post
  19. Insert snippet into R function

    I am trying to insert a piece of code into an already existing R function(s). I think I have a way but am sharing to allow others to (a) learn if...

    Started by trinker‎, 04-01-2016 11:34 PM
    • Replies: 0
    • Views: 1,081
    04-01-2016, 11:34 PM Go to last post
  20. Ecological Analysis with Many Confounding Variables

    Hi Everyone, Not sure if this type of post is allowed but I am at my wits end doing a biological diversity analysis with R. I do like statistics...

    Started by MiaB‎, 03-30-2016 10:11 AM
    • Replies: 4
    • Views: 1,795
    04-01-2016, 02:25 PM Go to last post
  21. How to avoid using the '$' in R

    R has these data structures that involve a sort-of 'master variable' and then sub-variables that are specified as master$sub. For example, if I'm...

    Started by DSandberg‎, 03-31-2016 05:00 PM
    • Replies: 4
    • Views: 1,604
    04-01-2016, 10:21 AM Go to last post
  22. Applying L1 and L2 weights

    I am trying to replicate reported results from the OECD in relation to the PISA 2003 data. In particular I am trying to calculate there ICC. They do...

    Started by Lazar‎, 03-31-2016 06:44 PM
    • Replies: 1
    • Views: 1,328
    03-31-2016, 07:30 PM Go to last post
  23. Plotting data

    Hi, Suppose i have the following data: x y z h1 h2 h3 h4 h5 h6 a1 a2 a3 a4 ...

    Started by nabeeha.deedar‎, 03-29-2016 07:49 AM
    plotting in r
    • Replies: 2
    • Views: 1,432
    03-31-2016, 01:34 PM Go to last post
  24. Modifying values on Y axis of a histogram

    Hello and sorry in advance for my poor English ;) I would like to plot a frequency distribution in R. On the X axis are my values (elevation in my...

    Started by Andreas77‎, 03-31-2016 06:41 AM
    axis, histogram
    • Replies: 0
    • Views: 1,474
    03-31-2016, 06:41 AM Go to last post
  25. Regression - Make a new group from data

    Hi. I am new to R, and have to do a regression on the dependent variable but only for a certain group which is characterized by one independent...

    Started by PERAV‎, 03-29-2016 10:27 AM
    regression
    • Replies: 2
    • Views: 2,424
    03-29-2016, 11:09 AM Go to last post
  26. A question about stochastic gradient boosting in R caret package

    Hello, everyone, I am currently using R caret package to estimate a stochastic gradient boosting. While most predictors are numeric, one predictor...

    Started by t.wang21@yahoo.com.au‎, 03-28-2016 07:07 PM
    • Replies: 1
    • Views: 1,587
    03-28-2016, 09:11 PM Go to last post
  27. Basic questions from newbie

    Hi, I am currently learning ML algorithms and implementing in R. I have a couple basic questions. 1.)Is dimensionality reduction same as feature...

    Started by chakravarty456‎, 03-27-2016 05:49 AM
    feature selection, machine learning, r programming and usage, r programming help, statisics
    • Replies: 1
    • Views: 2,581
    03-27-2016, 12:51 PM Go to last post
  28. DiagrammeR part 2: how to change colours

    So I posted: this I have it working, but the default colours are mega ugly. Anyone know / can steer me in the right direction as to how I can...

    Started by bugman‎, 03-23-2016 09:06 PM
    • Replies: 4
    • Views: 1,815
    03-24-2016, 07:39 PM Go to last post
  29. [SOLVED] error using DiagrammeR

    Does anyone have experience with the mermaid function in DiagrammeR? I ripped this gantt chart example from stackoverflow: ...

    Started by bugman‎, 03-23-2016 01:43 AM
    • Replies: 2
    • Views: 1,851
    03-23-2016, 04:58 PM Go to last post
  30. How to assign value to particular seasons?

    Say I have data for the 2013-2015 seasons, and I rate 2015 as important as 5, 2014 as important as 3, and 2013 as important as 1. How do I assign...

    Started by DV Man‎, 03-22-2016 03:40 PM
    • Replies: 1
    • Views: 956
    03-22-2016, 03:59 PM Go to last post
  31. Perm ANOVA - help!

    Hi everybody! I'm trying to test whether there's a difference in coral sizes between 4 habitats. I don't have homogeneity of variance between the...

    Started by UV-J‎, 03-22-2016 03:14 AM
    perm
    • Replies: 2
    • Views: 1,777
    03-22-2016, 10:59 AM Go to last post
  32. Why am I getting an error message? What does c mean?

    NL = c("FLA", "STL", "HOU", "STL", "COL", "PHI", "PHI", "SFG", "STL", "SFG") AL = c("NYY", "BOS", "CHW", "DET", "BOS", "TBR", "NYY", "TEX", "TEX",...

    Started by DV Man‎, 03-21-2016 10:19 PM
    • Replies: 4
    • Views: 1,597
    03-21-2016, 10:49 PM Go to last post
  33. Any baseball fans who use R?

    I'm reading "Analyzing Baseball With R." Very fascinating stuff. I'm a Phillies fan from Delaware.

    Started by DV Man‎, 03-21-2016 07:31 PM
    • Replies: 0
    • Views: 1,241
    03-21-2016, 07:31 PM Go to last post
  34. Angry Medical Audit New Column based off three other columns

    Hello I'm Sean a final year medical student doing an audit on some ultrasound data. I'm new to programming and R. What I want to do is create a...

    Started by SeanWestbury‎, 03-21-2016 05:38 AM
    • Replies: 1
    • Views: 1,473
    03-21-2016, 11:22 AM Go to last post
  35. Smile How do you use “dput” to upload to stackoverflow?

    I'm a complete nube, never programmed in my life and downloaded R two days ago. Trying to upload a data table in R to stackoverflow for help with...

    Started by SeanWestbury‎, 03-21-2016 06:19 AM
    medical statistics, upload
    • Replies: 0
    • Views: 5,101
    03-21-2016, 06:19 AM Go to last post
  36. Why doesn't R post all of my data?

    I have saved a certain file, and when I go to post it, it only posts the first five years out of the 10 that were saved. Does anyone know why this...

    Started by DV Man‎, 03-19-2016 07:25 PM
    • Replies: 8
    • Views: 2,173
    03-20-2016, 09:57 PM Go to last post
  37. Post mlogit: restrict coefficient of alternative-invariant variable to be equal for alt

    Hi. For evaluating a choice experiment I estimate a conditional logit model with mlogit in R . The output looks like this: Call: mlogit(RES ~...

    Started by ga34gep‎, 03-10-2016 11:10 AM
    • Replies: 4
    • Views: 2,093
    03-20-2016, 04:51 PM Go to last post
  38. ggplot Options

    Alright, I am finally getting back to the plot I mentioned last week. Parts I have left to fix in the below graph are: - tick labels bigger ...

    Started by hlsmith‎, 03-16-2016 02:18 PM
    • Replies: 2
    • Views: 2,019
    03-16-2016, 03:45 PM Go to last post
  39. Shiny apps - Facebook data mining using R

    Hello everyone, last time I posted one thread about collecting data from Facebook. You can watch the tutorial here...

    Started by bobbymistery‎, 08-03-2015 06:13 AM
    • Replies: 1
    • Views: 4,011
    03-16-2016, 02:30 AM Go to last post
  40. [R:ggplot2] Draw line segments through vertically stacked points on a scatter plot

    I have a fairly large data set that is very similar to the following example: a...

    Started by carabidus‎, 03-11-2016 09:21 PM
    • Replies: 3
    • Views: 1,855
    03-12-2016, 11:48 PM Go to last post
  41. Passing a function as an argument

    Hi all, I'm currently taking an online course on R on coursera. I'm at a point in the class where this concept is a little fuzzy to me. Can...

    Started by DATAfiend‎, 03-11-2016 11:36 PM
    argument, function
    • Replies: 1
    • Views: 1,430
    03-12-2016, 12:06 PM Go to last post
  42. 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: 9
    • Views: 8,390
    03-12-2016, 10:20 AM Go to last post
  43. R mlogit: How do I interpret marginal effects using absolute or relative type?

    Hi R users, I use effects() to compute the marginal effects of a mlogit model in R. effects(object, covariate = NULL, type = c("aa", "ar", "rr",...

    Started by Thomas.V‎, 03-12-2016 09:21 AM
    covariate, marginal effects, mlogit, multinomial logit
    • Replies: 0
    • Views: 1,345
    03-12-2016, 09:21 AM Go to last post
  44. Distance calculation in R using spDists

    Hello everyone. I am a graduate researcher, trying to explore the packages in R to help me with my research work. I am using R-3.2.2 and have...

    Started by Student Researcher‎, 03-10-2016 12:10 PM
    • Replies: 1
    • Views: 4,153
    03-11-2016, 01:44 PM Go to last post
  45. Programming newbie problem. Reading .mtx files as needed.

    Hello everyone and thanks in advance for everyone willing to help. I study climate geography and for my bachelor thesis I need to compare two...

    Started by Vortimer‎, 03-11-2016 05:47 AM
    • Replies: 0
    • Views: 1,737
    03-11-2016, 05:47 AM Go to last post
  46. Unhappy Optimizing java to R call in Rserve

    I am facing a problem while performing optimization using lpSolveAPI in R and Java on a large dataset. I tried Rserve,RCaller,JRI,Renjin and found...

    Started by jijosunny‎, 03-11-2016 04:03 AM
    java, optimization, rserve
    • Replies: 0
    • Views: 1,794
    03-11-2016, 04:03 AM Go to last post
  47. geographic network analysis

    I'm trying to do geographic network analysis. I've used igraph libraries to make a network. I've used maptools to make a map. How do I combine...

    Started by garynobles‎, 03-02-2016 03:33 PM
    • Replies: 2
    • Views: 1,643
    03-09-2016, 05:28 PM Go to last post
  48. Matrix multiplication

    I have two files. Row id in File1 matches the column id in file2 (starting from column7 )except the last 2 characters. File1 has 50 rows and File 2...

    Started by Akang‎, 03-07-2016 07:28 PM
    multiplication, textfiles
    • Replies: 4
    • Views: 2,279
    03-09-2016, 12:13 AM Go to last post
  49. Implementing a VIF test on Panel Data in R

    I'm currently writing my thesis about the performance of Ethical Companies. I'm runnning a Fama Macbeth Cross Sectional Regression as in the...

    Started by StudentCBS‎, 03-04-2016 10:30 AM
    • Replies: 2
    • Views: 7,067
    03-07-2016, 06:12 AM Go to last post
  50. Question Grouping variables and creating a new variable by counting number of occurance.

    Hi, I have a dataset of burglaries in which some convicts have multiple records. I want to group cases by convicts and create a new variable that...

    Started by commandante‎, 03-06-2016 06:24 AM
    counting occurances, grouping variables
    • Replies: 5
    • Views: 2,339
    03-06-2016, 02:06 PM Go to last post
  51. Lightbulb Removing rows from a matrix based on column entries

    ORIGINAL QUESTION EDITED Dear R Users, I have a question about removing rows from a matrix. All matrix entries are either a 0 or a 1. The rows...

    Started by ashokkrish‎, 02-22-2016 01:01 AM
    • Replies: 3
    • Views: 2,738
    03-06-2016, 03:52 AM Go to last post
  52. Question Choroplethr - Zooming in within a region?

    Hello all, I'm trying to create a choropleth plot to show iguana population data on a map of the Galapagos. I have installed choroplethr, maps,...

    Started by 10jessica‎, 03-04-2016 11:30 AM
    choropleth, choroplethr, plot
    • Replies: 0
    • Views: 1,401
    03-04-2016, 11:30 AM Go to last post
  53. GGPLOT Unused Factor Levels

    hi! hopefully I can explain what I want to achieve without being too complicated. see below for an image I have made in ggplot2. It currently uses...

    Started by jamesmartinn‎, 03-03-2016 09:50 AM
    • Replies: 3
    • Views: 2,022
    03-03-2016, 09:07 PM Go to last post
  54. Grouping from a larger dataset

    Hi guys I have a data set looking something like this: PWT Age Gender Group Time Treatment 27.5 Young Male Gr1 ...

    Started by ChristianS‎, 02-26-2016 02:55 AM
    • Replies: 1
    • Views: 1,683
    02-29-2016, 11:24 AM Go to last post
  55. data.table manipulation for poisson model setup

    I am cross posting from stackoverflow.com....no ideas there so far! I am working with a large dataset of a fishing fleet and I need to format it...

    Started by senegale‎, 02-27-2016 01:25 AM
    data.table, poisson data
    • Replies: 0
    • Views: 1,341
    02-27-2016, 01:25 AM Go to last post
  56. Issue of run time for basic simulation

    I am a newbie of using R, and when I attempt to write some simple command for simulation the software simply keeps running non-stop. Is there...

    Started by oh_man‎, 02-26-2016 02:01 AM
    • Replies: 1
    • Views: 1,234
    02-26-2016, 09:15 AM Go to last post
  57. Question Open Big text weighted file on R

    Hi guys, I am not sure to be allowed to post such a thing here. I have just downloaded several big text file which I would like to use to run...

    Started by jerome559‎, 02-26-2016 03:59 AM
    • Replies: 0
    • Views: 1,028
    02-26-2016, 03:59 AM Go to last post
  58. Drift Diffusion Model

    Hello I have RT-Accuracy data. I want to estimate the parameters of a drift diffusion model (Ratcliff, 1978). I am assuming that: v(t)=v(t-1) + v +...

    Started by Ariel Goldstein‎, 02-25-2016 04:58 AM
    drift. diffusion, model
    • Replies: 1
    • Views: 1,504
    02-25-2016, 12:17 PM Go to last post
  59. Group Like Columns In Data Frame

    I have a data frame takes the following form. Type| val1 | val2 | val3 | Type | val1 | val2 | val3 | Type | val1 | val2 | val3 | ...

    Started by FFA‎, 02-24-2016 03:22 PM
    column, data frame
    • Replies: 0
    • Views: 1,094
    02-24-2016, 03:22 PM Go to last post
  60. A little help with looping..

    Below is a similar to a data set I am working with... I am struggling to write a loop that would go through the data and add a new column 'Rank'...

    Started by deangelr‎, 02-21-2016 03:09 PM
    data management, loops
    • Replies: 7
    • Views: 2,038
    02-23-2016, 10:25 PM Go to last post

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