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338 discussions - 1,028 posts

  • Dear Duncan, I discovered something interesting wrt to the licensing and mirroring of user-contributed material on StackExchange. Please read below. On Sun, Nov 24, 2013 at 9:00 PM, Duncan Murdoch ...
    Liviu AndronicLiviu Andronic
    Feb 2, 2014 at 9:49 pm
    Feb 8, 2014 at 8:35 am
  • Hi, Emails <span class="m_body_email_addr" title="22ad19915bd4bc2199f9ae5ff2e038c8" mal123@gmail.com</span <span class="m_body_email_addr" title="13d3e09811b9a1223ce9e55eaf19867e" ...
    Malyadri PutchakayalaMalyadri Putchakayala
    Feb 6, 2014 at 4:04 am
    Mar 20, 2014 at 4:56 pm
  • Hello, I don't know how to use predict.lm() for ts object. Here's the time series regression. y = t + Q1 + Q2 + Q3 + Q4 Here's my R code, Call: lm(formula = tsdat ~ t + q) Coefficients: (Intercept) t ...
    C WC W
    Feb 23, 2014 at 11:34 pm
    Feb 24, 2014 at 4:38 am
  • Dear Rxperts Is there a way to control the display order (or simplistically control panel layout) of a list of trellis objects without using a for loop (or whatever)? I just realize that gridExtra ...
    SantoshSantosh
    Feb 18, 2014 at 12:41 am
    Feb 18, 2014 at 11:13 pm
  • Dear R users, Please help with with this maybe basic question. I am trying to see if my data is normal but is a large file and the test does not work. I keep getting the message : "Error in ...
    Gonzalo Villarino PizarroGonzalo Villarino Pizarro
    Feb 21, 2014 at 3:59 pm
    Feb 25, 2014 at 2:10 pm
  • I was trying to understand the boxcox function in MASS to get a better understanding of where and how the log-Likelihood values are calculated. By using "debug(boxcox)" I found this code while ...
    Gene LeynesGene Leynes
    Feb 13, 2014 at 10:17 pm
    Feb 15, 2014 at 4:44 pm
  • Hello all, can help clarify something? According to R's lm() doc: Since the idea here is *proportion*, not equality, shouldn't the vectors of weights x, 2*x give the same result? And yet they don't, ...
    Marco InacioMarco Inacio
    Feb 5, 2014 at 9:40 pm
    Feb 6, 2014 at 10:06 pm
  • I have a dataframe that looks like the below. I want to convert the Captured.Time field to a date object. but some of the entries are not properly formated and I get a message saying Error in ...
    BillBill
    Feb 27, 2014 at 6:03 am
    Feb 27, 2014 at 4:42 pm
  • Hello, Assuming that I have a data frame A<-data.frame(A=c(10,100,1000,30,50,60,300), B=c(0,1,1,1,0,0,0), C=c(0,0,0,0,1,1,0), D=c(1,0,0,0,0,0,1)) What I would like is to introduce a new column ...
    Ioanna ioannouIoanna ioannou
    Feb 20, 2014 at 10:54 pm
    Feb 22, 2014 at 12:51 am
  • dear all, I have a xy plot in which x is logarithmic. The plot is fine, and I can also represent the logarithimic axis usign a tip given me by William Dunlap. However I would like to plot the actual ...
    Luigi MarongiuLuigi Marongiu
    Feb 11, 2014 at 5:51 pm
    Feb 12, 2014 at 3:47 pm
  • Hi , I read your post and followed your instructions but still couldn't install RMySQL by getting the message: "installation of package ‘RMySQL’ had non-zero exit status" Can you please walk me ...
    Peretz, EliranPeretz, Eliran
    Feb 5, 2014 at 7:37 pm
    Feb 6, 2014 at 10:34 pm
  • I've tried to figure out how to do this from what I read, but haven't been successful. Suppose I have a dataframe with variables Date, X, and Y (and maybe U, V, and Z) where X, Y, etc. have different ...
    David ParkhurstDavid Parkhurst
    Feb 2, 2014 at 7:09 pm
    Feb 5, 2014 at 6:35 pm
  • I have a "Y" variable with many values less than 50, and many fewer between 50 and 250.I'd like to plot those Y's against an X, with two scales on the Y axis---maybe 60% of the axis height for 0-50 ...
    David ParkhurstDavid Parkhurst
    Feb 25, 2014 at 5:18 pm
    Feb 27, 2014 at 2:37 pm
  • Since ... hmmm.. May 2012, I've had a cron-initiated script running monthly to extract some data and generate some numeric tables and plots (in PNG format). In its "normal" mode, the script ...
    David WolfskillDavid Wolfskill
    Feb 25, 2014 at 6:36 pm
    Feb 26, 2014 at 4:32 pm
  • Hi everyone, I previously posted this question but my message was not well written and did not contain any code so I will try to do a better job this time. The goal is to perform a non-linear ...
    Andrea GrazianiAndrea Graziani
    Feb 9, 2014 at 10:45 pm
    Feb 13, 2014 at 12:15 am
  • Hi All, I have some data with different special characters, newline character, and different language characters in a CSV file like `~!@#$%^&*| ()-_+={[}]|\:;""'<, .?/ in data, while I am trying to ...
    Venkata KirankumarVenkata Kirankumar
    Feb 4, 2014 at 3:58 pm
    Feb 8, 2014 at 7:03 am
  • R_format.csv <http://r.789695.n4.nabble.com/file/n4684711/R_format.csv Hi, I am new to R Programming and need help on categorizing and plotting the data in the attached excel file into tabular ...
    AshrafaliAshrafali
    Feb 4, 2014 at 4:27 pm
    Feb 8, 2014 at 1:06 am
  • Why am I know getting hours after I convert the date? dates <- c('31/12/2013 0:00', '31/12/2013 1:00', '31/12/2013 2:00', '31/12/2013 3:00', '31/12/2013 4:00', '31/12/2013 5:00', '31/12/2013 6:00', ...
    JcrosbieJcrosbie
    Feb 6, 2014 at 6:24 pm
    Feb 6, 2014 at 10:24 pm
  • If I have a character such as "?" stored in a object called "xxx", how can I obtain the hex code representation of this character? In this case I know that the hex code is "\u00A3", but if I didn't, ...
    Rolf TurnerRolf Turner
    Feb 5, 2014 at 12:57 am
    Feb 5, 2014 at 8:17 pm
  • Looking for a build in function which returns a vector of the positions of _ALL_ matches. -- Witold Eryk Wolski
    Witold E WolskiWitold E Wolski
    Feb 3, 2014 at 10:18 am
    Feb 3, 2014 at 4:42 pm
  • I have a function that makes use of the ode() function from the "deSolve" package. I am trying to find a way of getting it to put out a "progress report" every "t.int" time units (by "progress ...
    Rolf TurnerRolf Turner
    Feb 25, 2014 at 8:08 am
    Feb 26, 2014 at 3:02 am
  • Dear all, I have a data frame with a status column and some condition columns. (a dput of part of it is listed below). I would like to know if: 1) There are more chances to have a "status" of "1" ...
    PQueryPQuery
    Feb 19, 2014 at 7:19 pm
    Feb 24, 2014 at 6:42 am
  • I have a subset of data that I have identified as "suspect" (for example, the first name has excessive spaces, is longer than 35 characters or has a number). What I want to do is update the ...
    Jeff JohnsonJeff Johnson
    Feb 18, 2014 at 5:24 pm
    Feb 18, 2014 at 10:03 pm
  • Hi, I have a random effects meta analysis of a proportion (logit transformation) using rma.glmm. I have created a forest plot of the proportion (inverse logic transformation) using forest.rma. I have ...
    Nathan PaceNathan Pace
    Feb 11, 2014 at 10:11 pm
    Feb 13, 2014 at 6:21 pm
  • Hi I want to search for multiple pattern as grep is doing for a single pattern, but this obviously not work: [1] 1 Warning message: In grep(c("an", "em", "eb"), month.name) : argument 'pattern' has ...
    Rainer M KrugRainer M Krug
    Feb 13, 2014 at 2:43 pm
    Feb 13, 2014 at 4:45 pm
  • Hi, Try: data.frame(table(dat$Date)) A.K. Hi guys, I have some 20,000 observations like this: ? ? ? ? ? Date ? ? ? 2014-01-01 00:00:00 2014-01-02 11:00:00 2014-01-02 22:00:00 2014-01-03 03:00:00 I ...
    ArunArun
    Feb 5, 2014 at 3:59 pm
    Feb 9, 2014 at 3:17 am
  • mgcv: distribution of dev hi I can't tell if this is a simple error. I'm puzzled by the distribution of dev when fitting a gam to Poisson generated data. I expected dev to be approximately ...
    Greg DropkinGreg Dropkin
    Feb 4, 2014 at 9:25 am
    Feb 5, 2014 at 5:50 pm
  • Dear Contributors I am asking some advice on how to solve the following problem. I have a list composed of 78 elements, each of which is a matrix of factors and numbers, similar to the following ...
    FrancescaFrancesca
    Feb 4, 2014 at 11:42 am
    Feb 4, 2014 at 9:57 pm
  • R 3.0.1 OS X Colleagues, I am experimenting with incorporating C code into R. After compiling the C code with: R CMD SHLIB -o FILE.so FILE.c and executing: dyn.load(?FILE.so?) (without any errors), I ...
    Dennis FisherDennis Fisher
    Feb 3, 2014 at 1:09 am
    Feb 4, 2014 at 12:29 pm
  • I know using eval is not optimal and maybe bad, but how to avoid using eval in the following example func1 <- function(dat, eval.this) { eval(parse(text = paste0("with(dat, ", eval.this, ")"))) } dat ...
    Hai QianHai Qian
    Feb 1, 2014 at 4:40 pm
    Feb 1, 2014 at 7:14 pm
  • Hi, I have some measurements and their uncertainties. I'm using an uncensored subset of the data for a weighted fit (for now---I'll do a fit to the full, censored, dataset when I understand the ...
    Kyle PennerKyle Penner
    Feb 24, 2014 at 10:20 pm
    Feb 26, 2014 at 7:49 pm
  • In the description section of the RPostgreSQL package documentation, it states: "In order to build and install this package from source, PostgreSQL itself must be present your system to provide ...
    andrewHandrewH
    Feb 1, 2014 at 3:40 am
    Feb 25, 2014 at 3:49 am
  • # Data manipulation problem # Please my Git repo at <https://github.com/markruddy/RAD.git Running RStudio 0.97.248 The dataset RYA13Report_transect_AB.csv is in a sort of 'longform' at the moment ...
    Drruddy gmailDrruddy gmail
    Feb 19, 2014 at 3:18 pm
    Feb 19, 2014 at 9:09 pm
  • Hello, I?m new to R and I?m trying to solve a simple problem for finding the radius of a cylinder given the height and volume. I?ve included the data file where the height in cm is column 2 and ...
    NivekNivek
    Feb 10, 2014 at 2:39 pm
    Feb 14, 2014 at 8:55 pm
  • Based on the data. vec1 <- c(56,98,15) vec2 <- sort(vec1,decreasing=TRUE) ?vec2[1]-vec2[2] #[1] 42 A.K. Hi, I need some help in a simple thing.... If I have 3 classes like ? ?56 ? ? 98 ? ?15, I need ...
    ArunArun
    Feb 10, 2014 at 1:20 am
    Feb 12, 2014 at 5:44 am
  • Hello, I am using the survey package for the first time to analyze a dataset that has both weights and 200 BRR replication weights. When I try to run svyglm on the output from svrepdesign, I get an ...
    Claire WladisClaire Wladis
    Feb 10, 2014 at 10:10 pm
    Feb 12, 2014 at 2:37 am
  • Dear all, I want to do a loop with foreach. But, I would like to include a condition with "next" to don't loop over some elements. For example, I would like to translate this "for loop" to a "foreach ...
    Marc Marí Dell'OlmoMarc Marí Dell'Olmo
    Feb 11, 2014 at 10:30 am
    Feb 11, 2014 at 8:40 pm
  • Hello, I am relatively new to vegan and need some help with metaMDS. My R is Version 3.0.2. I am analysing cuticular profiles of flys from different locations an different gender. My data is in a 48 ...
    Fabian BFabian B
    Feb 10, 2014 at 11:26 am
    Feb 11, 2014 at 5:42 pm
  • Hello, I am trying the ifelse command for imputing a variable based on a conditional statement, but the NAs do not transform. The code I am trying is: ifelse (x==1, y=="NO", y=="YES"). However, the ...
    Ana GenkovaAna Genkova
    Feb 10, 2014 at 4:03 am
    Feb 10, 2014 at 6:15 am
  • Dear all, My data is : a <- c(0.9721,0.9722,0.9730,0.9723,0.0,0.0,0.0,0.9706,0.9698,0.0,0.9710,0.9699) I want to replace zeros with average of before and after values of them. But sometimes there is ...
    CeCe
    Feb 6, 2014 at 3:05 am
    Feb 6, 2014 at 4:41 am
  • Hi, I have the following issue. The dataframe df has a column (Date1) supposed to be a date but read as a factor. There are two types of values in the same column Date1 Type 1 are datetime like ...
    Yolande TraYolande Tra
    Feb 3, 2014 at 1:53 am
    Feb 3, 2014 at 3:23 am
  • Hi all, I'm trying to compute a mean on my data but I'm struggling with 2 things: 1. getting the right layout and 2. including the missing values in the outcome. #Input data: Stock <- c("A", "A", ...
    Beatriz R. Gonzalez DominguezBeatriz R. Gonzalez Dominguez
    Feb 2, 2014 at 12:32 pm
    Feb 2, 2014 at 8:00 pm
  • I wish to compare prices in a dataframe to calculated upper limits and then reject (collect in a reject dataframe) those rows with prices that are above the upper limit but I am having trouble ...
    Barry KingBarry King
    Feb 15, 2014 at 9:34 am
    Mar 12, 2014 at 11:30 pm
  • Hi All I am having problem running the 'attributes' command to set a attribute on each column of a large dataset. Dataset has 80 columns and 312407 rows. Its taking more than 60 seconds to set simple ...
    Smart GuySmart Guy
    Feb 22, 2014 at 2:13 am
    Mar 12, 2014 at 5:17 pm
  • Dear R users, I have to find optimal solution of an underdetermined linear system, but only with positive variables. I tried the function from this post ...
    KlqmbaKlqmba
    Feb 27, 2014 at 12:22 pm
    Mar 6, 2014 at 11:26 am
  • Hello together, i have a data.frame like this one: ID ONE TWO THREE 1 2 5 7 2 6 NA NA 3 5 7 NA 4 1 NA NA Now i want a new column with the max-Value of "ONE", "TWO" and THREE. The result look like ...
    MatMat
    Feb 27, 2014 at 7:05 am
    Feb 27, 2014 at 2:26 pm
  • Dear All, Does anyone know if there is any way to obtain the variance-covariance matrix for any arbitrarily given estimates with the glm() function? Here is what I really want. Given an arbitrary ...
    Xiaogang SuXiaogang Su
    Feb 26, 2014 at 8:24 am
    Feb 27, 2014 at 3:47 am
  • Hi, I have realized a multiple linear regression. To know how well my model does in terms of prediction, I can compute prediction intervals bands and decide if they are narrow enough to be of use. If ...
    Varin sachaVarin sacha
    Feb 25, 2014 at 10:57 pm
    Feb 26, 2014 at 10:54 pm
  • Hello together, i have a little problem, maybe anyone can help me. I have 2 data.frame, one look like this one: FS_ID ABNR 9327 33688812 11391 33688812 11392 33688812 11388 33688812 11390 33688812 ...
    MatMat
    Feb 25, 2014 at 9:39 am
    Feb 26, 2014 at 3:42 pm
  • HI Elio, Not sure whether this helps: length(list.files(pattern=".txt")) #[1] 22 ?lst1 <- lapply(list.files(pattern=".txt"),function(x) read.table(x,header=TRUE,stringsAsFactorsúLSE)) ...
    ArunArun
    Feb 25, 2014 at 9:03 pm
    Feb 25, 2014 at 9:39 pm
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