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Hi Elahe, ?mean in particular the na.rm argument. HTH Ulrik On Thu, 2 Mar 2017 at 11:55 ch.elahe via R-help <r-help at r-project.org> wrote: > Hi all, > > The question seems easy but I could...
Dear R-helpers, I have a question regarding LU-decomposition with function lu in package Matrix. The following simple example confuses me: Why is as.matrix(elu$U) not an upper triangular matrix? u3 <- matrix(c(1,1,1,1...
Hi Georg, maybe someone here knows, but I think you are more likely to get answers to Rstudio related questions with RStudio support: https://support.rstudio.com/hc/en-us Best, Ulrik On Thu, 9 Feb 2017 at 12:35...
Dear all, for everybody's benefit, here is a brief summary of what I learnt from Uwe Ligges. There is a convincing reason against combining a data directory with a datalist file only (the way for retrieving a list of...
Dear Shashi, I don't see any code, but I will take a guess anyway: The error tells you that you try to compare a boolean with something that is not (TRUE or FALSE cannot be compared to NA). HTH...
Hello, in the help of mtext I found "at: If ?length(at)==0? (the default), the location will be determined by ?adj?" But if I use mtext( "hello world", at=NULL) there comes the following error message: Fehler in mtext...
Can you use subset? subset(d, b == 4 & c == 10) Best Ulrik On Tue, 3 May 2016 04:58 jpm miao, <miaojpm at gmail.com> wrote: > Is it possible? I am expecting the result to be the second row of...
Dear all, I would like to test the differences in dependent variable X depending on 2 grouping variables of each 10 levels. I do this with a 2-way ANOVA, followed by a Tukey HSD test (TukeyHSD(x)). However, since...
Hi Elahe, I have no clue, but maybe you can dump the data fields using pdftk, and work with those in R. HTH Ulrik On Wed, 26 Jul 2017 at 13:50 Elahe chalabi via R-help <r-help at...
I don't know if there's a pure R option, but i believe pdftk can extract the form data which you can then manipulate in R. Best Ulrik On Sat, 11 Mar 2017, 05:14 Vijayan Padmanabhan, < padmanabhan.vijayan...
Hi Lily, you can use gsub: df$ID <- gsub("_.*", "", df$ID) HTH Ulrik On Sun, 3 Jul 2016 at 20:16 lily li <chocold12 at gmail.com> wrote: > I have a problem in changing row names in a dataframe in...
You could loop over the file names, read each excel file and store the individual data frames in a list using lapply. I prefer to read excel files with the package readxl. The code could be along the lines of...
Dear developeRs, I just discovered the function plot.design in package graphics that acts as a method for class design - the second time I come across a class design outside my own packages. (The first time was in package conf...
Dear DevelopeRs, for an R-Commander plugin, I want to display a pre-stored information image, if the user presses a button. Everything works fine with the command tcl("image", "create", "photo", "MaxC2.image", file="MaxC2res3image.gif") for image creation...
Dear UseRs, I just learnt that the number of columns of a data frame is not always what I thought it to be, and I wonder where I should have learnt about this. Consider the following example: dat <- data.frame...
Full_Name: Ulrike Groemping Version: 2.9.0 (and older) OS: Windows Submission from: (NULL) (84.190.173.190) When using an older version of R, packages are not found although they are available for newer versions of R and...
Dear R experts, I have defined a class "myclass" and would like the slots to be extractable not only by "@" but also by "$". I now try to write a method for "$" that simply executes the request object at slotname, whenever...
Hi Elahe, maybe this will help: http://stackoverflow.com/questions/6455088/how-to-put-labels-over-geom-bar-in-r-with-ggplot2 or this: http://stackoverflow.com/questions/12018499/how-to-put-labels-over-geom-bar-for-each-bar-in...
Dear R-help crowd, is it possible to specify a time delay for plotting the points in a curve? I would like to make the plotting process slow enough to show the development of the graph, and therefore I am...
Hi Saba, I don't know how to do what you want and I also cannot see why. If you describe what you hope to achieve there might be a different solution. Best wishes Ulrik Saba Sehrish via R-help...
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