Grokbase Groups R r-help October 2010
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1,013 discussions - 3,541 posts

  • Dear R users, I have the following script to create bins of specified time intervals bin_end`/bin_size bin_size=bin_size*100 h=seq(070000,180000,by000) breaks=c() for (i in h) { for (j in ...
    MantaManta
    Oct 19, 2010 at 3:25 pm
    Oct 27, 2010 at 12:11 pm
  • Dear List, I am trying to plot date vs. time, but am having problems getting my y-axis labels how I want them.? When left on its own R plots time at 6 hour intervals from 03:00 to 23:00.? I am ...
    Tim ClarkTim Clark
    Oct 11, 2010 at 10:56 pm
    Oct 27, 2010 at 11:47 pm
  • Hello all, I am loading a data frame, fitting a model, getting diagnostic plots and they are flagging a couple of observations as problematic. Fair enough, and I want re-fit without them. After I ...
    Schwab,Wilhelm KSchwab,Wilhelm K
    Oct 7, 2010 at 9:30 pm
    Oct 19, 2010 at 7:41 am
  • Dear all, I have a function f(x) which return a list as result. $T1 [1] 0.03376190 $T2 [1] 0.04725 $T3 [1] 0.3796071 $T4 [1] 0.3713452 $T5 [1] 0.4523651 $T6 [1] 0.4575873 I now find the result for a ...
    Li liLi li
    Oct 14, 2010 at 9:53 pm
    Nov 1, 2010 at 11:48 am
  • Dear All, I am experiencing some problems with a script of mine. It crashes with this message Error in grepl(fut_string, past_string) : invalid regular expression ...
    Lorenzo IsellaLorenzo Isella
    Oct 8, 2010 at 5:11 pm
    Oct 10, 2010 at 6:22 pm
  • I know I could figure it out empirically - but maybe based on your experience you can tell me if it's doable in a reasonable amount of time: I have a table (in .txt) with a 17,000,000 rows (and 30 ...
    Dimitri LiakhovitskiDimitri Liakhovitski
    Oct 22, 2010 at 9:17 pm
    Oct 23, 2010 at 3:22 pm
  • Here's the problem I'm trying to solve in R: I have a data frame that consists of about 1500 cases (rows) of data from kids who took a test of listening comprehension. The columns are their scores (1 ...
    David HerzbergDavid Herzberg
    Oct 22, 2010 at 3:33 pm
    Oct 27, 2010 at 1:37 pm
  • Hi all, I am trying to do something simple, but which is deviling me. I want to add an up-arrow to the x-axis, pointing to a specific location on the axis. I want the arrow to be as large as ...
    Josh BJosh B
    Oct 6, 2010 at 12:45 am
    Oct 6, 2010 at 2:54 pm
  • Hello R-Users! I am looking for an editor to be able to execute commands into R in Linux ubuntu. Is there any suggestion? Thanks.
    Mehdi ZarreiMehdi Zarrei
    Oct 5, 2010 at 1:52 pm
    Oct 5, 2010 at 4:32 pm
  • Dear list, I am relatively new to ordinal models and have been working through the example given by Frank Harrell in the predict.lrm {Design} help All of this makes sense to me, except for the ...
    John HaartJohn Haart
    Oct 1, 2010 at 10:12 am
    Oct 4, 2010 at 1:10 pm
  • How to get the previous business day in R? I saw some post about using functions in timeSeries package before but can not find it anymore. Thanks! ...
    Li, Jing YiLi, Jing Yi
    Oct 21, 2010 at 7:38 pm
    Oct 22, 2010 at 8:26 pm
  • V2 V3 V4 V5 2010-10-15 13:43:54 73.8 73.8 73.8 73.8 2010-10-15 13:44:15 73.8 73.8 73.8 73.8 2010-10-15 13:45:51 73.8 73.8 73.8 73.8 2010-10-15 13:46:21 73.8 73.8 73.8 73.8 2010-10-15 13:47:27 73.8 ...
    Megh DalMegh Dal
    Oct 15, 2010 at 6:20 pm
    Oct 16, 2010 at 2:00 am
  • Hello all, I had a very strange looking problem that turned out to be due to unexpected (by me at least) format changes to one of my data files. We have a small lab study in which each run is ...
    Schwab,Wilhelm KSchwab,Wilhelm K
    Oct 13, 2010 at 5:13 pm
    Oct 14, 2010 at 5:22 pm
  • I want to plot and then save graphs in a loop. The problem is that the graphs take too long to plot. Execution jumps to the save command (dev.copy2eps) before the plotting has finished, and so the ...
    NewsNews
    Oct 22, 2010 at 9:54 am
    Oct 30, 2010 at 12:11 pm
  • Dear All, I would like to plot a scalar (e.g. a temperature) on a non-rectangular domain (or even better: I would simply like to be able to draw a contour plot on an arbitrary 2D domain). I wonder if ...
    Lorenzo IsellaLorenzo Isella
    Oct 24, 2010 at 11:30 am
    Oct 25, 2010 at 2:01 pm
  • Hi, I am trying to create Bid/Ask for each second from a high volume stock and the only way I have been able to solve this is using loops to create the target matrix from the source tick data ...
    RivercodeRivercode
    Oct 4, 2010 at 9:29 pm
    Oct 10, 2010 at 4:26 am
  • Hi All, I am running a scatter plot and trying to add a best fit line. I use an abline function, but get no line drawn over the points. I also get no error. I arm using V 2.10.0 on Windows 7. Here is ...
    Gerard SmitsGerard Smits
    Oct 6, 2010 at 9:56 pm
    Aug 29, 2013 at 9:56 pm
  • Hi, I have a data file with hundreds of rows, with every first, second, third, and fourth line representing a set of numbers for row names x, y, fit, and residuals, respectively. However, any given ...
    SmcguffeeSmcguffee
    Oct 27, 2010 at 5:51 pm
    Oct 27, 2010 at 11:05 pm
  • Dear R-Group, I am looking for suggestions for the "best" IDE for R. Best is obviously subjective but I need just the basic features that should function well (and I looked through the threads ...
    Santosh SrinivasSantosh Srinivas
    Oct 27, 2010 at 11:01 am
    Oct 27, 2010 at 7:33 pm
  • in a simple plot. When i do plot is it possible to zoom in or out or this is not possible at all? Best Regards Alex
    AlaiosAlaios
    Oct 26, 2010 at 3:30 pm
    Oct 27, 2010 at 4:16 pm
  • Dear Sir/Madam: Great thanks for R project and you contribution. I am Liping Liu, a beginner of R. Recently, I use R much. I wish you could improve the manual by making it search engine friendly. The ...
    刘力平刘力平
    Oct 23, 2010 at 6:18 am
    Oct 27, 2010 at 7:03 am
  • Dear R-helpers, the problem I'm facing today is to convince lattice to paint some areas in gray. The areas I would like to have in gray, are confidence bands I've googled around in the mailing list ...
    OttorinoOttorino
    Oct 19, 2010 at 4:29 pm
    Oct 20, 2010 at 3:34 pm
  • Hello Everyone, Just finished reading A Handbook of Statistical Analyses using R by Everitt and Hothorn. I'll begin by saying that I quite liked the book. It's both little and mighty in the sense ...
    Paul MillerPaul Miller
    Oct 1, 2010 at 9:58 pm
    Oct 4, 2010 at 2:57 pm
  • Hello everybody, Data is myd <- data.frame(id1=rep(c("a","b","c"),each=3),id2=rep(1:3,3),val=rnorm(9)) I want to get a cumulative sum over each of id1. trying aggregate does not work myd$pcum <- ...
    Bond, StephenBond, Stephen
    Oct 12, 2010 at 5:40 pm
    Feb 26, 2011 at 6:42 pm
  • -- Chitra Bahadur Baniya (PhD) Lecturer Central Department of Botany Tribhuvan University Kirtipur Kathmandu, Nepal -- View this message in context ...
    ChitraChitra
    Oct 28, 2010 at 12:49 pm
    Nov 2, 2010 at 5:22 pm
  • Hi list, Could someone explain to me why the following result is not a integer? Time difference of 195.0417 days I'm using R2.12.0 on WinXP. Thanks! ...Tao
    Shi, TaoShi, Tao
    Oct 29, 2010 at 11:55 pm
    Oct 30, 2010 at 8:16 pm
  • I am looking to use R in order to determine the number of extreme events for a high frequency (20 minutes) dataset of wave heights that spans 25 years (657,432) data points. I require the number, ...
    DpenderDpender
    Oct 28, 2010 at 12:00 pm
    Oct 30, 2010 at 12:31 pm
  • Hi, This might be me missing something painfully obvious but why does the cube root of the following produce an NaN? [1] NaN As we can see: [1] -4 Thanks! Greg
    Gregory RyslikGregory Ryslik
    Oct 26, 2010 at 11:05 pm
    Oct 27, 2010 at 4:42 pm
  • Hello, About looping, consider the example: for (i in 1:23194) { dat.stat[i,c(2:8)]<-quantile(dat.bat[BL==block[i],2],prob=c(0,0.025,0.25,0.5,0.75,0.975,1)) print(i) } I'd like to have the value of ...
    Antonio OlintoAntonio Olinto
    Oct 21, 2010 at 6:05 pm
    Oct 22, 2010 at 3:46 pm
  • Dear All I have data like this: x y [1,] 5 2.865490 [2,] 3 1.454611 [3,] 3 2.258772 [4,] 6 1.476128 [5,] 4 2.771606 y 2.865490 and I want to delete data row in IR where y = y.j How I can do. IRD
    IRDIRD
    Oct 16, 2010 at 12:02 pm
    Oct 18, 2010 at 3:37 pm
  • Hello-- I have a data for small population who took 1 drug at 3 different doses. I have the actual drug concentrations as well as predicted concentrations by my model. This is what I'm looking for: - ...
    ThaliagooThaliagoo
    Oct 15, 2010 at 2:25 am
    Oct 16, 2010 at 2:22 am
  • Hello everyone. It is time to start writing more and more function and I want to read in a good reference -book ( I can buy one, especially if it is second handed :P) -online tutorial -any other ...
    AlaiosAlaios
    Oct 6, 2010 at 3:44 pm
    Oct 8, 2010 at 4:12 pm
  • Hello R-users, I'm currently facing a pretty hard problem which I'm hopping you'll be able to help me with. I'm using R to create images. That alone is not the problem, the problem is that I'm using ...
    Bastien Ferland-RaymondBastien Ferland-Raymond
    Oct 6, 2010 at 6:11 pm
    Oct 8, 2010 at 6:10 am
  • Hi guys, Can anyone tell me what is the meaning of following command ? paste(execDir,paste(short,"myfile",sep="_"),sep="\") R gives me an error : Error: object 'short' not found I tried to find help ...
    Viki SViki S
    Oct 19, 2010 at 2:03 pm
    Feb 22, 2012 at 10:31 am
  • Hello all, I'm trying to use zoo.read but can't figure out how to deal with the time format. (example below) would be nice if someone could help. best regards, Immanuel --------------------------- L ...
    ImmanuelImmanuel
    Oct 25, 2010 at 1:02 pm
    Dec 22, 2010 at 9:45 pm
  • I would like to be able to construct hazard rates (or unconditional death prob) for many subjects from a given survfit. This will involve adjusting the ( n.event/n.risk) with (coxph object ...
    Bond, StephenBond, Stephen
    Oct 27, 2010 at 4:12 pm
    Nov 2, 2010 at 8:27 pm
  • I'm having trouble returning a rolling n period highest value for a data set. For each day I want to calculate the highest value over the last 3 days. I am using the following packages: zoo, xts, ...
    Jason KwokJason Kwok
    Oct 28, 2010 at 4:27 pm
    Oct 29, 2010 at 4:02 am
  • So I'm in a stochastic simulations class and I having issues with the amount of time it takes to run the Ising model. I usually don't like to attach the code I'm running, since it will probably make ...
    Michael DMichael D
    Oct 26, 2010 at 5:50 am
    Oct 28, 2010 at 6:34 pm
  • Dear list: I am trying to calculate the intersection area between two irregular polygons (see example data below). set.seed(1234) theta <- seq(0, 2 * pi, length=(100)) poly1<- cbind(c(0 + 1 * ...
    Jonas garciaJonas garcia
    Oct 25, 2010 at 11:17 pm
    Oct 28, 2010 at 12:00 am
  • Hi All, I am learning R and having a little trouble with the usage and proper definitions of data.frames vs. matrix vs vectors. I have read many R tutorials, and looked over ump-teen 'cheat' sheets ...
    Matt CurcioMatt Curcio
    Oct 27, 2010 at 12:37 am
    Oct 27, 2010 at 2:15 pm
  • Hi, How can I get the '2+' into superscript in the following title: '[Ca2+]i onsets' I tried the command below, but it doesn't work. What am I missing? hist(X, main=expression(([Ca*]i^2+) 'onsets'), ...
    DrCJonesDrCJones
    Oct 22, 2010 at 11:01 am
    Oct 26, 2010 at 6:35 pm
  • Guys, I used Random Forest with a couple of data sets I had to predict for binary response. In all the cases, the AUC of the training set is coming to be 1. Is this always the case with random ...
    VioravisVioravis
    Oct 22, 2010 at 5:19 am
    Oct 24, 2010 at 2:40 pm
  • Hi, If a matrix is not positive definite, make.positive.definite() function in corpcor library finds the nearest positive definite matrix by the method proposed by Higham (1988). However, when I deal ...
    HAKAN DEMIRTASHAKAN DEMIRTAS
    Oct 21, 2010 at 10:50 pm
    Oct 22, 2010 at 5:36 pm
  • Hi, I am trying to do some calculations turning DMS data to decimal degrees using the formula (D+(M/60)+(S/3600)), some of the D's involve -ve numbers, the easiest way to do the calculation is to use ...
    Sadz ASadz A
    Oct 20, 2010 at 3:47 pm
    Oct 21, 2010 at 4:06 pm
  • Hi everyone, I�m trying to install reshape2. But when I click on �install package� it�s not coming up!?!?! I�m getting reshape, but no reshape2? I�ve also tried download.packages(reshape2, ...
    Chris HowdenChris Howden
    Oct 4, 2010 at 12:57 am
    Oct 18, 2010 at 7:41 am
  • R community, I am trying to write a code that fills in data gaps in a time series. I have no R or statistics background at all but the use of R is proving to be a large portion of my PhD research. So ...
    DpenderDpender
    Oct 13, 2010 at 8:24 am
    Oct 15, 2010 at 10:05 am
  • Hello How to compare two statistical histograms? How i can know if these histograms are equivalent or not?? Regards
    Solafah bhSolafah bh
    Oct 11, 2010 at 10:01 pm
    Oct 15, 2010 at 7:11 am
  • Hi all, I'm currently writing an R package and want to declare a GPL2 license. According to the license agreement, I'm supposed to display: "This program is free software; you can redistribute it ...
    Stacey WoodStacey Wood
    Oct 14, 2010 at 3:06 pm
    Oct 14, 2010 at 5:02 pm
  • Hi, I have two vectors, each of length 45000. How do I compare the vectors to ascertain if they are identical. Secondly if they are NOT identical, how do I determine the indices of positions at which ...
    ANJAN PURKAYASTHAANJAN PURKAYASTHA
    Oct 12, 2010 at 5:35 pm
    Oct 13, 2010 at 7:26 am
  • Um texto embutido e sem conjunto de caracteres especificado foi limpo... Nome: n?o dispon?vel Url: <https://stat.ethz.ch/pipermail/r-help/attachments/20101003/4df2917d/attachment.pl
    Nilza BARROSNilza BARROS
    Oct 3, 2010 at 3:31 am
    Oct 5, 2010 at 4:21 pm
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