Grokbase Groups R r-help October 2011
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869 discussions - 2,994 posts

  • This is my first excursion into using reshape2 and I want to ensure that the melt() function call is syntactically correct. The unmodifed data frame is organized this way: head(tds.anal) site ...
    Rich ShepardRich Shepard
    Oct 27, 2011 at 3:26 pm
    Oct 28, 2011 at 4:49 pm
  • Because of regulatory requirement changes over several decades and weather conditions preventing site access the variables in my data set have different lengths. I'd like guidance on how to perform ...
    Rich ShepardRich Shepard
    Oct 21, 2011 at 4:13 pm
    Oct 24, 2011 at 4:37 pm
  • Hi, I'm a newbie to R. My knowledge of statistics is mostly self-taught. My problem is how to measure the effect of users in groups. I can calculate a particular attribute for a user in a group. But ...
    GjGj
    Oct 9, 2011 at 11:20 am
    Oct 15, 2011 at 3:15 pm
  • I'm trying to convert an S-Plus program to R. Since I'm a SAS programmer I'm not facile is either S-Plus or R, so I need some help. All I did was convert the underscores in S-Plus to the assignment ...
    Scott RaynaudScott Raynaud
    Oct 5, 2011 at 1:53 am
    Oct 6, 2011 at 4:59 pm
  • Hi every one ,,,, i have problem in R program to import the data from excel , I have done the following: 1. install.packages("xlsReadWrite") 2. library(xlsReadWrite) 3. z<- ...
    Sarah_R_eduSarah_R_edu
    Oct 11, 2011 at 9:57 am
    Nov 28, 2011 at 9:12 pm
  • Hello, I recently updated to R version 2.13.2. With R version 2.10.0, I often created and installed R packages, however, I cannot do this since updating. In other words, when I type in Rcmd build ...
    Hardy GriesbauerHardy Griesbauer
    Oct 21, 2011 at 9:07 pm
    Nov 14, 2011 at 7:26 pm
  • 'data.frame': 14886 obs. of 4 variables: $ site : Factor w/ 148 levels "BC-0.5","BC-1",..: 104 145 126 115 114 128 124 2 3 3 ... $ sampdate: Date, format: "1996-12-27" "1996-08-22" ... $ param ...
    Rich ShepardRich Shepard
    Oct 4, 2011 at 6:39 pm
    Oct 5, 2011 at 2:51 pm
  • I have 3 columns of data and want to plot each row as a point in a scatter plot and want one column to be represented as a color gradient (e.g. larger values being more red). Anyone know the command ...
    KerryKerry
    Oct 2, 2011 at 5:11 pm
    Oct 21, 2011 at 5:14 pm
  • Hi all, I recently started learning about Forex and found this O'Reilly book in Barnes & Nobles about R. I bought it out of pure curiosity. I like what I see. However, I have a question. Has anyone ...
    Yves S. GarretYves S. Garret
    Oct 12, 2011 at 1:29 am
    Oct 13, 2011 at 2:22 am
  • Just wondering here -- I tested and found to my delight that % round(325.4,-2) [1] 300 gave me exactly what I would have expected (and wanted). Since it's not explicitly mentioned in the ...
    Carl WitthoftCarl Witthoft
    Oct 7, 2011 at 9:26 pm
    Oct 12, 2011 at 12:50 am
  • Dear all, Could you please explain me why [,1] [1,] 1 [2,] 2 [3,] 3 [4,] 4 [5,] 5 [6,] 6 [7,] 7 [8,] 8 [9,] 9 [10,] 10 [1] 2 3 4 5 6 7 8 9 10 the last line does not remove the first and third element ...
    AlaiosAlaios
    Oct 30, 2011 at 6:52 pm
    Nov 2, 2011 at 11:33 am
  • Hello I am a new user of R and I need help to merge two large datasets about stocks with different number of rows and columns. Both have 2 variable(column) that are have same values ("name" and ...
    DividendDividend
    Oct 24, 2011 at 11:53 am
    Oct 26, 2011 at 2:43 pm
  • Thanks to David's help I subset my large data set and produced a smaller one for a single stream and 7 factors of interest. The structure of this data frame is: str(burns.tds.anal) 'data.frame': 718 ...
    Rich ShepardRich Shepard
    Oct 24, 2011 at 8:49 pm
    Oct 24, 2011 at 11:24 pm
  • Hi list I am discovering R, and -- PhD candidate in Computer Science Address 3 avenue lamine, cité ezzahra, Sousse 4000 Tunisia tel: +216 97 246 706 (+33640302046 jusqu'au 15/6) fax: +216 71 391 166
    Adel ESSAFIAdel ESSAFI
    Oct 21, 2011 at 2:42 pm
    Oct 22, 2011 at 3:47 pm
  • If I know the specific coordinate in a spatial data frame, how can I access the data at that coordinate? My coordinates are labeled "x" and "y" in a data.frame "e". The data is in column "leachate" ...
    Bailey, DanielBailey, Daniel
    Oct 12, 2011 at 7:37 pm
    Oct 14, 2011 at 11:31 am
  • I'm interested in creating a graphic -like- this: c <- ggplot(mtcars, aes(qsec, wt)) c + geom_point() + stat_smooth(fill="blue", colour="darkblue", size=2, alpha = 0.2) but I need to show 2 sets of ...
    Thomas AdamsThomas Adams
    Oct 3, 2011 at 5:24 pm
    Oct 10, 2011 at 4:17 pm
  • I used to consider using R and "Optim" to replace my commercial packages: Gauss and Matlab. But it turns out that "Optim" does not converge completely. The same data for Gauss and Matlab are ...
    YehengxinYehengxin
    Oct 1, 2011 at 6:12 am
    Oct 2, 2011 at 3:36 pm
  • Dear List: Below is the validation output of a fitted ordinal logistic model using the bootstrap in the rms package. My interpretation is that most of the corrected indices indicate little ...
    AdamAdam
    Oct 22, 2011 at 3:01 pm
    Oct 24, 2011 at 1:39 pm
  • dear R experts: ?apologies for all my speed and memory questions. ?I have a bet with my coauthors that I can make R reasonably efficient through R-appropriate programming techniques. this is not just ...
    Ivo welchIvo welch
    Oct 11, 2011 at 1:01 am
    Oct 13, 2011 at 8:51 pm
  • Hi everybody, I would like to know whether it is possible to compare to tables for certain parameters. I have these two tables: gene table name chr start end str accession Length gen1 4 646752 646838 ...
    Assa YeroslavizAssa Yeroslaviz
    Oct 25, 2011 at 10:42 am
    Oct 26, 2011 at 2:57 pm
  • I have some data 'myData' in wide form (attached at the end), and would like to convert it to long form. I wish to have five variables in the result: 1) Subj: factor 2) Group: between-subjects factor ...
    Gang ChenGang Chen
    Oct 6, 2011 at 8:28 pm
    Oct 8, 2011 at 12:31 am
  • Dear folks, I?m trying to build a function to create and make available some variables I frequently use for testing purposes. Suppose I have a function that takes some inputs and creates (internally) ...
    andrewHandrewH
    Oct 5, 2011 at 4:27 am
    Oct 7, 2011 at 8:10 am
  • Hi, i am unable to install the rugarch package. More than that i do not even find this package in my list of possible packages. Its possible than the name has changed, or the package is not longer ...
    User84User84
    Oct 17, 2011 at 12:49 pm
    Feb 12, 2012 at 8:11 pm
  • Hello R gurus, I have the code below for which i need help and pointers to make it run in parallel on a dual core win7 computer with R 2.13.x, using foreach, iterators,doMC. library(scatterplot3d) # ...
    1Rnwb1Rnwb
    Oct 27, 2011 at 12:50 pm
    Oct 31, 2011 at 2:58 pm
  • R2.13.2, W7x64 Dear list, Excuse my ignorance, but I have gone through the R help (?parse, ?eval, etc.) and still really don't know how to do the following. I have the general following structure ...
    Wet Bell DiverWet Bell Diver
    Oct 22, 2011 at 7:13 pm
    Oct 25, 2011 at 3:58 am
  • I noticed that the text() command adds text to a plot. Is there a way to either make the plot blank or add text to a "blank sheet". I would like to "plot" a page that contains just text, no plot ...
    RkevinburtonRkevinburton
    Oct 22, 2011 at 12:26 am
    Oct 24, 2011 at 3:15 pm
  • Hi, imagine the following matrix/data.frame Letter Number a 1 a 1 b 1 b 0 c 0 c 1 d 0 d 0 If the numbers for two identical letters are also identical then I want to remove either the first or the ...
    SyrvnSyrvn
    Oct 13, 2011 at 4:42 pm
    Oct 13, 2011 at 7:26 pm
  • I have 2 series of variables, I want to plot the probability density function of these 2 variabels (i.e. two curves in one graph), I just want to compare these two variable distribution. what should ...
    PigpigmeowPigpigmeow
    Oct 12, 2011 at 7:27 am
    Oct 13, 2011 at 2:30 am
  • Hello All, I have a series of steps that needs to be run many times. Hence I put them all into a function. There is no problem in function creation, but when I call the function, the steps are not ...
    DivyamDivyam
    Oct 11, 2011 at 1:21 pm
    Oct 12, 2011 at 1:55 pm
  • Hi, Please advice on what type of graph can be used to display the following data set. I have the following: Name Class a Class 1 a Class4 b Class2 b Class1 d Class3 d Class5 e Class4 e Class2 So ...
    Jurgens de BruinJurgens de Bruin
    Oct 10, 2011 at 10:49 am
    Oct 11, 2011 at 9:05 am
  • Dear all, I would like to ask your help regarding handling time stamps in R. I think first I need a reference to read about their logic and how I should handle them. For example, this is a struct I ...
    AlaiosAlaios
    Oct 7, 2011 at 3:04 pm
    Oct 10, 2011 at 1:58 pm
  • First of all, I have GAMs noxd<-gam(newNOX~pressure+maxtemp+s(avetemp,bs="cr")+s(mintemp,bs="cr")+s(RH,bs="cr")+s(solar,bs="cr")+s(windspeed,bs="cr")+s(transport,bs="cr"),family=gaussian ...
    PigpigmeowPigpigmeow
    Oct 4, 2011 at 8:00 am
    Oct 7, 2011 at 1:03 pm
  • Dear R-group, is there a way to perform calculations that are defined in a string format? for example I have different variables: x1 <- 3 x2 <- 1 x4 <- 1 and a string-variable: do <- 'x1 + x2 + x3' ...
    Martin BatholdyMartin Batholdy
    Oct 5, 2011 at 8:14 pm
    Oct 5, 2011 at 9:25 pm
  • I want to apply Nyblom-Hansen test with the strucchange package, but I don't know how is the correct way and what is the difference between the following two approaches (leeding to different ...
    BuehlermanBuehlerman
    Oct 9, 2011 at 12:16 pm
    Feb 16, 2012 at 3:33 pm
  • Hi, I am currently working with a data set which contains a list of julian dates of phenological (flowering, leaf growth etc.) I obtained a correlation matrix by simply using the cor function with ...
    AlexCAlexC
    Oct 25, 2011 at 9:09 pm
    Nov 1, 2011 at 2:56 pm
  • Hi. I am trying to install using the following. Can someone suggest what is wrong? I am using Windows 7 64bit, and R 2.10.1 ('C:\Users\Bill\Desktop\DMwR_0.2.1.zip', repos=NULL ) Warning in ...
    William ClasterWilliam Claster
    Oct 5, 2011 at 5:06 am
    Oct 31, 2011 at 9:54 pm
  • Does R graphics have a way to easily label the horizontal axis by the reciprocal of the scaled value? -- View this message in context ...
    HurrHurr
    Oct 28, 2011 at 7:57 pm
    Oct 30, 2011 at 7:51 pm
  • I have a 2 x 3 matrix called snp and I want to compute the following probability: choose(sum(snp[,1]), snp[1,1]) * choose(sum(snp[,2]), snp[1,2]) * choose(sum(snp[,3]), snp[1,3])/choose(sum(snp), ...
    Jim SilvertonJim Silverton
    Oct 27, 2011 at 4:09 am
    Oct 27, 2011 at 8:42 pm
  • Hello, Does anyone knows how to deal with zero subscript in R. I have this code: for (i in 1:nitems){ + for (j in 1:ncat-1) { + draw<-matrix(rnorm(nitems*(ncat-1),seed1,seed2),nitems,(ncat-1)) + d<-( ...
    Md Desa, Zairul Nor Deana BintiMd Desa, Zairul Nor Deana Binti
    Oct 24, 2011 at 11:23 pm
    Oct 26, 2011 at 2:10 am
  • Dear r-help listers, I am using effects to produce an effect plot after the proportional odds logistic regression model. There is no problem for me to estimate the model, but when it comes to the ...
    Xu JunXu Jun
    Oct 20, 2011 at 2:34 pm
    Oct 20, 2011 at 7:33 pm
  • I have a data set like this in one .txt file (cols separated by !): APE!KKU!684! APE!VAL!! APE!UASU!! APE!PLA!1! APE!E!10! APE!TPVA!17122009! APE!STAP!1! GG!KK!KK! APE!KKU!684! APE!VAL!! APE!UASU!! ...
    Johannes raraJohannes rara
    Oct 18, 2011 at 12:12 pm
    Oct 18, 2011 at 6:59 pm
  • Hi, Newbie here. I read the R for Beginners but i still don't get this. I have the following data (this is just an example) in a CSV file: courseid numstudents 101 209 141 13 246 140 263 8 321 10 361 ...
    GjGj
    Oct 16, 2011 at 3:31 pm
    Oct 17, 2011 at 9:48 am
  • hi! I hope all of you can help me this question for example GAMs: ozonea<-gam(newozone~ pressure+maxtemp+s(avetemp,bs="cr")+s(ratio,bs="cr"),family=gaussian (link=log),groupA,methods=REML) ...
    PigpigmeowPigpigmeow
    Oct 13, 2011 at 8:05 am
    Oct 14, 2011 at 6:42 am
  • Hello, I'm looking to get the values, row names and column names of the largest and smallest values in a matrix. Example (except is does not include the names): a b c d c z 12 7 6 2 10 y 9 7 12 8 3 x ...
    Ben qantBen qant
    Oct 11, 2011 at 7:54 pm
    Oct 13, 2011 at 4:15 pm
  • dear r experts---Is there a multicore equivalent of by(), just like mclapply() is the multicore equivalent of lapply()? if not, is there a fast way to convert a data.table into a list based on a ...
    Ivo welchIvo welch
    Oct 10, 2011 at 5:41 pm
    Oct 10, 2011 at 10:41 pm
  • Hi, I am having trouble understanding how to approach a simulation: I have a sample of n%0 from a population of N=2,000 individuals, and I would like to use either permutation test or bootstrap to ...
    FrancyFrancy
    Oct 8, 2011 at 2:04 pm
    Oct 9, 2011 at 4:10 pm
  • Anyone got any hints on how to make this code more efficient? An early version (which to be fair did more than this one is) ran for 330 hours and produced no output. I have a two column table, Dat, ...
    ThomasThomas
    Oct 6, 2011 at 12:37 pm
    Oct 7, 2011 at 12:10 pm
  • Hi, I am having troubles sourcing a file from our local network from R. It looks like this file are not properly accessed by 'source', even they can be downloaded with download.file. (See below my ...
    Renaud GaujouxRenaud Gaujoux
    Oct 5, 2011 at 10:13 am
    Oct 5, 2011 at 1:07 pm
  • The summary function behaves inconsistently with data frame columns, e.g. summary(rock) #max of area 12212, correct summary(rock$area) #max of area 12210, incorrect max I know that summary(rock$area, ...
    Jeanne M. SpicerJeanne M. Spicer
    Oct 4, 2011 at 3:12 am
    Oct 4, 2011 at 9:15 pm
  • I am facing a problem with a function in survey package. The function svyvar gives the estimated population variance from a given sampling scheme. I am working with a data having more than four ...
    AmitavaAmitava
    Oct 24, 2011 at 11:21 am
    Nov 3, 2011 at 6:09 am
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