Grokbase Groups R r-help August 2009
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967 discussions - 3,359 posts

  • Perhaps most of you have already seen this? http://google-styleguide.googlecode.com/svn/trunk/google-r-style.html Comments/Critiques? Thanks, Esmail ps: Reminds me of PEP 8 for Python ...
    EsmailEsmail
    Aug 28, 2009 at 12:59 pm
    Sep 8, 2009 at 9:59 am
  • Quick informal poll: what is everyone's favorite text editor for working with R? I'd like to hear from people who are using editors that have some level of direct R interface (e.g. Tinn-R, ...
    Jonathan GreenbergJonathan Greenberg
    Aug 27, 2009 at 7:43 pm
    Sep 11, 2009 at 10:11 pm
  • Hi, I am reading in a dataframe from a CSV file. It has 70 columns. I do not have any kind of unique "row id". rawdata <- read.table("r_work/train_data.csv", header=T, sep=",", na.strings=0) When ...
    Noah SilvermanNoah Silverman
    Aug 2, 2009 at 9:10 pm
    Aug 3, 2009 at 6:31 am
  • dear all, could somebody tell me how I can plot mild outliers as a circle(?) and extreme outliers as an asterisk(*) in a box-whisker plot? Thanks very much in advance -- View this message in ...
    RnewbieRnewbie
    Aug 19, 2009 at 9:09 am
    Aug 20, 2009 at 11:03 am
  • Hi, I need to compare two matrices with each other. If you can get one of them out of the other one by resorting the rows and/or the columns, then both of them are equal, otherwise they're not. A ...
    Michael KoganMichael Kogan
    Aug 22, 2009 at 6:45 pm
    Aug 25, 2009 at 1:53 pm
  • Hello everybody. I've been learning R for about a month to do a econometric study and now i'm stuck with some problems to make R do the things I want. Here I give the list of things I wanna do from ...
    RakknarRakknar
    Aug 19, 2009 at 9:51 pm
    Aug 20, 2009 at 9:06 pm
  • Hi, R users, I'm using the "lme" function in R to estimate a 2 level mixed effects model, in which the size of the subject groups are different. It turned out that It takes forever for R to ...
    Hongwei DongHongwei Dong
    Aug 3, 2009 at 5:15 pm
    Aug 6, 2009 at 8:13 am
  • Hi, I'm new to programming, new to R and even new to mailing lists so please be patient with me. I need to manage many matrices generated by an R program. These matrices have different dimensions and ...
    Michael KoganMichael Kogan
    Aug 18, 2009 at 8:48 am
    Aug 20, 2009 at 8:01 pm
  • Readers, Previous questions about this requirement have been for m$ users, my failure occurs using linux. I have tried to add the delta (?) symbol to the y axis label and the result is &D, using the ...
    E-letterE-letter
    Aug 17, 2009 at 10:51 am
    Aug 19, 2009 at 4:47 pm
  • I have a question related to scoping. Suppose we have 2 functions: f1 = function(i){i = 1} f2 = function(n){ i = length(n) f1(i) } In other words, I would like i=1 regardless of n. Is this possible ...
    Ivo ShterevIvo Shterev
    Aug 5, 2009 at 9:55 pm
    Aug 8, 2009 at 10:07 am
  • Hi all, I'm currently using the 'rpart' function to run some regression analysis and I am at the point where I wish to prune my overfitted trees. Having read the documentation I understand that to do ...
    Andrew AldersleyAndrew Aldersley
    Aug 30, 2009 at 6:55 pm
    Sep 2, 2009 at 7:06 am
  • Un texte encapsul? et encod? dans un jeu de caract?res inconnu a ?t? nettoy?... Nom : non disponible URL : <https://stat.ethz.ch/pipermail/r-help/attachments/20090824/bfe76c98/attachment.pl
    Inchallah YarabInchallah Yarab
    Aug 24, 2009 at 3:59 pm
    Aug 26, 2009 at 8:22 am
  • I am trying to run an ANCOVA with defined error terms. Thus I have to use AOV and not lm. my response variable is proportion of mice paw prints on track plates. These plates were placed on plots that ...
    HpdutraHpdutra
    Aug 20, 2009 at 2:46 am
    Aug 26, 2009 at 6:27 am
  • Hi, in my project I want the user to be able to write hook functions that are in turn called in my main code. I'd like the user's hooks to be able to call some function that set a variable outside ...
    Renaud GaujouxRenaud Gaujoux
    Aug 20, 2009 at 8:27 am
    Aug 21, 2009 at 4:17 pm
  • Hello, I want to try to connect R to PostgreSQL. I have found that there are three ways: DBI or RODBC or RPostgreSQL. I tried around with DBI and RODBC but didn't get it running. In both cases I'm ...
    Oliver BandelOliver Bandel
    Aug 28, 2009 at 3:22 pm
    Aug 29, 2009 at 8:25 pm
  • I have a data set similar to the following: Color Score RED 10 RED 13 RED 12 WHITE 22 WHITE 27 WHITE 25 BLUE 18 BLUE 17 BLUE 16 and I am trying to to select just the values of Color that are equal to ...
    JlwoodardJlwoodard
    Aug 21, 2009 at 10:08 pm
    Aug 24, 2009 at 4:48 pm
  • Hello, In my ongoing quest to develop a "best" model, I'm testing various forms of SVM to see which is best for my application. I have been using the SVM from the e1071 library without problem for ...
    Noah SilvermanNoah Silverman
    Aug 19, 2009 at 5:27 pm
    Aug 19, 2009 at 10:56 pm
  • I have a geodatabase and would like to import it into GRASS, but it is in .mbf. I use mac and linux, and don't have access to access on the machines that I normally use. I do have access to access at ...
    Stephen sefickStephen sefick
    Aug 14, 2009 at 3:29 pm
    Aug 15, 2009 at 2:09 pm
  • Why when I assign 0 to an element of an integer vector does the type change to numeric? Here is a particularly perplexing example: [1] "numeric" #!! -- View this message in context ...
    Steve JaffeSteve Jaffe
    Aug 5, 2009 at 8:16 pm
    Aug 7, 2009 at 7:19 am
  • Hi, Is there a way to build up a vector, item by item. In perl, we can "push" an item onto an array. How can we can do this in R? I have a loop that generates values as it goes. I want to end up with ...
    Noah SilvermanNoah Silverman
    Aug 26, 2009 at 7:20 pm
    Aug 26, 2009 at 11:35 pm
  • I would like to use lattice graphics to plot multiple functions (or groups or subpopulations) on the same plot region, using different line types "lty" or colors "col" to distinguish the functions ...
    Jacob WegelinJacob Wegelin
    Aug 5, 2009 at 5:30 pm
    Aug 10, 2009 at 5:57 am
  • I am trying to get the function "Models" to work each time there is an instance of k. This code will stop after the first model is complete. I need it to come back and pass the next value of c into ...
    WaltzmiesterWaltzmiester
    Aug 5, 2009 at 3:37 pm
    Aug 5, 2009 at 7:11 pm
  • Ok i feel pretty stupid.. been trying to read a text file that contains heading in the first line in to R but cant. all i need to do is make a contour plot for a friend but after weeks i feel like ...
    hannesPretoriushannesPretorius
    Aug 2, 2009 at 1:06 pm
    Aug 5, 2009 at 1:23 pm
  • Hi, I'm trying to find an easy way to do this. I want to select the top three values of a specific column in a subset of rows in a data.frame. I'll demonstrate. A B C x 2 1 x 4 1 x 3 2 y 1 5 y 2 6 y ...
    Noah SilvermanNoah Silverman
    Aug 26, 2009 at 8:36 am
    Aug 26, 2009 at 3:23 pm
  • Hi, I am trying to edit a data frame such that the string in the first line is appended onto the beginning of each element in the subsequent rows. The data looks like this: V1 V2 V3 V4 1 DPA1* DPA1* ...
    Jill HollenbachJill Hollenbach
    Aug 12, 2009 at 1:48 am
    Aug 13, 2009 at 3:56 pm
  • Hi, Trying to setup a logistic regression model. (Something new to me. I usually use SVM.) The person explaining the concept explained to me that I can include a "group" variable so that the ...
    Noah SilvermanNoah Silverman
    Aug 4, 2009 at 10:33 pm
    Aug 13, 2009 at 5:42 am
  • dear all, I got a problem with pattern matching using grep. I extracted a list of characters from a data frame, and I tried to match this list of characters to a column from another data frame. In ...
    RnewbieRnewbie
    Aug 4, 2009 at 3:16 pm
    Aug 5, 2009 at 5:11 pm
  • Dear all, I have about 30,000 matrix (512x512), with values from 1 to N. Each value on a matrix represent a habitat patch on my matrix (i.e. my landscape). Non-habitat are stored as ZERO. No I need ...
    Milton ruserMilton ruser
    Aug 26, 2009 at 4:53 pm
    Aug 26, 2009 at 9:46 pm
  • Hello all, I have a list which I'd like to convert to a data frame, while maintaining control of the columns' data types (akin to the colClasses argument in read.table). My numeric columns, for ...
    Alexander ShenkinAlexander Shenkin
    Aug 21, 2009 at 3:47 pm
    Aug 24, 2009 at 1:59 pm
  • Dear all here is my data called "rglp" structure(list(vzorek = structure(1:17, .Label = c("179/1/1", "179/2/1", "180/1", "181/1", "182/1", "183/1", "184/1", "185/1", "186/1", "187/1", "188/1", ...
    Petr PIKALPetr PIKAL
    Aug 19, 2009 at 12:31 pm
    Aug 20, 2009 at 6:06 am
  • In order to ease my students into the R environment I am developing a package which installs a variety of utility functions as well as slightly modified versions of some standard R functions -- e.g ...
    Pitt, JoelPitt, Joel
    Aug 13, 2009 at 8:48 pm
    Aug 14, 2009 at 7:11 pm
  • Hi, The answers to my previous question about nominal variables has lead me to a more important question. What is the "best practice" way to feed nominal variable to an SVM. For example: color = ...
    Noah SilvermanNoah Silverman
    Aug 12, 2009 at 6:53 pm
    Aug 13, 2009 at 11:01 am
  • When I try to select only those rows from the following data frame, called "data", in which X Y X Y V3 2 2 1 8.062258 3 3 1 2.236068 4 4 1 6.324555 5 5 1 5.000000 6 1 2 8.062258 8 3 2 9.486833 9 4 2 ...
    Jim BouldinJim Bouldin
    Aug 10, 2009 at 9:49 pm
    Aug 11, 2009 at 9:15 pm
  • Hello R Folks... Not a technical question, but I need some advice and perspective. I?ve got a set of functions I?m planning to put together into a package. The main hunk of data that gets used by ...
    Bryan HansonBryan Hanson
    Aug 10, 2009 at 3:03 pm
    Aug 11, 2009 at 6:58 pm
  • Hi, All, If I have a symmetric matrix, how can I get the negative square root of the matrx, ie. X^(-1/2) ? Thanks, Cindy
    cindy Guocindy Guo
    Aug 10, 2009 at 9:31 pm
    Aug 11, 2009 at 4:26 pm
  • Suppose I have an n-diml array A and I want to extract the first "row" -- ie all elements A[1, ...] Interactively if I know 'n' I can write A[1,,,,,] with (n-1) commas. How do I do the same more ...
    Steve JaffeSteve Jaffe
    Aug 4, 2009 at 7:23 pm
    Aug 6, 2009 at 7:55 am
  • Maybe a very basic question. How can I get mean of a object like this num [1:53, 1:2] 734 734 736 734 736 ... - attr(*, "dimnames")=List of 2 ..$ : NULL ..$ : chr [1:2] "x" "y" I want the mean of ...
    Paulo Eduardo CardosoPaulo Eduardo Cardoso
    Aug 3, 2009 at 1:07 pm
    Aug 3, 2009 at 2:39 pm
  • Hello, I'm using the svm function from the e1071 package. It works well and gives me nice results. I'm very curious to see the actual coefficients calculated for each input variable. (Other packages, ...
    Noah SilvermanNoah Silverman
    Aug 30, 2009 at 10:10 pm
    Sep 1, 2009 at 2:22 pm
  • Hello, I want to start testing using the MNP probit function in stead of the lrm function in my current experiment. I have one dependant label and two independent varaibles. The lrm is simple model ...
    Noah SilvermanNoah Silverman
    Aug 31, 2009 at 11:51 pm
    Sep 1, 2009 at 2:25 am
  • Hello all, I am trying to use computer modern fonts in my r grahics. I tried to do, as described here: http://www.stat.auckland.ac.nz/~paul/R/CM/CMR.html but unfortunately, it does not work. First of ...
    Friedericksen HopeFriedericksen Hope
    Aug 30, 2009 at 8:14 pm
    Aug 31, 2009 at 6:45 pm
  • Hello, is there a way to write the result of a plot to stdout? I mean even a binary thingy like a png-file, written to stdout?! I tried with the file-argument of png() and jpeg(), but did not get ...
    Oliver BandelOliver Bandel
    Aug 26, 2009 at 7:53 pm
    Aug 28, 2009 at 2:21 pm
  • Hello all, I am going to be running a small statistics workshop using R sometime in November. I am restricted to R because of the specific libraries I will be using - a good thing in my book - ...
    Michael NestrudMichael Nestrud
    Aug 26, 2009 at 1:08 pm
    Aug 27, 2009 at 8:57 pm
  • Hi R users: I will like to have a legend with math symbols and also with the value of a variable. But I cannot obtain both at the same time (symbol + value of a variable): Here is a reproducible ...
    Kenneth Roy Cabrera TorresKenneth Roy Cabrera Torres
    Aug 25, 2009 at 8:30 pm
    Aug 27, 2009 at 7:27 pm
  • I have suppose a matrix like that [,1] [,2] [,3] [1,] 1 8 15 [2,] 2 9 16 [3,] 3 10 17 [4,] 4 11 18 [5,] 5 12 19 [6,] 6 13 20 [7,] 7 14 21 c(mat[7,], mat[6,], mat[5,], ....., mat[1,]) Can anyone ...
    BogasoBogaso
    Aug 23, 2009 at 6:37 pm
    Aug 23, 2009 at 9:35 pm
  • I've been tweaking code for several days on and off in R, cut and pasting in from a text editor (I just leave them open all the time). I think I got something that was usable but then a powersurge ...
    Polwart Calum (County Durham and Darlington NHS Foundation Trust)Polwart Calum (County Durham and Darlington NHS Foundation Trust)
    Aug 19, 2009 at 9:57 pm
    Aug 21, 2009 at 8:51 am
  • Dear all, I'm trying to replace NA values with -9999 in one column of a data frame. I've tried using is.na and the testdata[testdata$onecolumn==NA] <- 9999 approach, but whilst neither generate ...
    Steve MurraySteve Murray
    Aug 17, 2009 at 3:41 pm
    Aug 18, 2009 at 4:09 pm
  • Does anyone have an R Syntax Highlighting file {userDefineLang.xml} for NotePad++?? I've started one, but I'm not so happy with it. Robert Farley Metro 1 Gateway Plaza Mail Stop 99-23-7 Los Angeles, ...
    Farley, RobertFarley, Robert
    Aug 10, 2009 at 10:37 pm
    Aug 15, 2009 at 6:15 am
  • Maybe I expect too much from a non compiled language. Anyway, I wonder whether it is possible in R to set constant values without using any memory location that would take useless space bacause such ...
    MauedeMauede
    Aug 13, 2009 at 2:05 pm
    Aug 13, 2009 at 10:24 pm
  • How do you access all the column attributes associated with a column reboot instance? The variables poisson2 ~ a matrix with 10,000 rows and 8 column attributes. Things I tried: This command only ...
    Mmv.listservsMmv.listservs
    Aug 10, 2009 at 3:01 pm
    Aug 10, 2009 at 6:15 pm
  • Dear All, I need to write an R function which computes values of Probabilities for the (standard) normal distribution, ¦µ(z) for z 0 by summing this power series. (We should accumulate terms until ...
    ReneRene
    Aug 19, 2009 at 11:04 am
    Jan 20, 2011 at 5:19 pm
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