similar to: Calculate Mean of Column Vectors?

There are indeed speed advantages in using colSums etc. However the disadvantage is that the newbie doesn't always find the power inherent in the apply, sapply, tapply and mapply. For many things that I do, the speed is the least of my worries; although I take the point that using apply for means or sums in packages that are distibuted to others is not the way to go. As many of us have found

Hey All, I have a large dataset and I want to calculate the average of each column then return a new dataset. Here is my question: I dont know if there is a function that can allow me to calculate the average every 60 records of data in the whole dataset, and return a new data frame. Not sure if I have to divide the dataset first for every 60, then do the mean or can i directly do that. thanks

Ok I deleted the incorrect conf file and set it up using Yast again here is the amended file. I tried using the IP address of the server this time but I'm still getting the same errors as before. [libdefaults] default_realm = ELLISONSLEGAL.COM clockskew = 300 [domain_realm] .ELLNET = ELLISONSLEGAL.COM [realms] ELLISONSLEGAL.COM = { kdc = 10.0.0.31 default_domain = ELLNET

Hello LLVM Developers! Last year, the LLVM Foundation sponsored a booth at the Grace Hopper Conference. I had 2 amazing volunteers from the community, David Blaikie and Anna Zaks, help me spread the word about LLVM, compilers, and open source. It was a great experience and we are hoping to repeat this at the upcoming 2018 Grace Hopper conference in Houston, TX on September 26-28. I’m looking

Hello, I am trying to setup my samba server version 3.0.10-1.fc3 as a Win2k Domain Member. What I need to know is once I have ADS security and Kerberos working, do I still need to use winbind or ldap for client authentication or will Kerberos take care of it? Rodre Ghorashi-Zadeh Chief Systems Engineer Conduit Technical Environments Corporation 604.785.4888

Hi, for what it''s worth: There''s now a new Live CD for Solaris called Damm Small Solaris: http://www.sunhelp.ru/archives/179-Damn_Small_Solaris_0.1.1_English_Page.html In contrast to Belenix this Live CD works in Qemu - even without kqemu load the performance is not so bad. One important missing are the network driver for the network adapter emulated by Qemu. But they

Dear all, I have a list of correlation coefficient matrixes. Each matrix represents one date. For example A[[1]] A B C A 1 0.2 0.3 B 0.2 1 0.4 C 0.3 0.4 1 A[[2]] A B C A 1 0.5 0.6 B

I am trying to connect to an ADS domain and it is failing all the time. I am running SuSE Linux 9.0 with Samba 3.0.13 and have configured Samba with ldap and heimdal kerberos Attached is my debug level 10 error log created when the join is attempted. I would appreciate any advice on solving this problem. Thanks in advance Penny Willisson DISCLAIMER: The information contained within or

hi all.....well ive installed each and everything according to the scratch installation but the problem is when i try to login a user through vicidialgui application it gives an error that there are 0 leads in the hopper to dial....well im pasting the result of a few queries .....plz if any one can do help me out .... this is what the error looks like... SELECT count(*) FROM vicidial_hopper

Long story short, I have a big iterative procedure that produces a long list of data.frames such as the one called "results" here. Is there an easy way to produce a similar list of data.frames comprised of the mean of each of the columns in results, such that it ends up like the one I've shown in "resultsmean" below? I've tried apply and lapply, still not got the

Hello, I am doing a simple linear regression analysis that includes few variables. I am using a bootstrap analysis to obtain the variation of my variables to replacement. I am trying to obtain the coefficients 95% confidence interval from the bootstrap procedure. Here is my script for the bootstrap: N = length (data_Pb[,1]) B = 10000 stor.r2 = rep(0,B) stor.r2 = rep(0,B) stor.inter =

Is there any way to control the spacing between bars in a histogram, or change the border width (I'm assuming the hist() function, though alternatives are welcome)? I'm interested in changing the visual spacing between columns in a plotted histogram. The general effect I'm looking for can be accomplished in barplots using the "width=" parameter, but I have not been able

Hi I spent hours looking over my formula. Somehow I cant find the reason why it gives me different answer. help appreciated. x = as.matrix(read.table("http://www.niehs.nih.gov/research/atniehs/core/microarrays/docs/heinloth.txt",1)) x = t(x) #now rows are subjects, cols are genes x = x[order(rownames(x)),] #order by treatment group oxygen, ultra-violet, gamma radiation y =

Hi, New wine user here. Installed Wine with IES4Linux and was totally amazed at how well it worked and how simple it was! Excellent! The problem I have is I want to restrict IE6 from being able to access my entire Linux file system and just allow it to access (for instance) ~/.wine/drive_c. I haven't found out how to do that yet. Is it possible? More detail: In IE6 under Wine,

Anna Zaks, David Blaikie and I have been at Grace Hopper Conference for the last couple days talking to many people about LLVM and how to get involved in the project. Its been discussed many times before at LLVM Developer Meetings and recently on the mailing list about tagging bugs with the “beginner” keyword and that keyword was recently added to the LLVM Bugzilla. However, there are very few

Having searched and searched I still haven't found what's the problem with my data (I've attached the relevant file). Every time I tried to use the CANCOR-Function I got error messages. So I turned to check my two sets of variables separately by using the "colMeans"-Function. With one set no problem .. but with the other. My input : > struktur <-

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dear useRs, i have a list containing 16 matrices. i want to calculate the column mean of each of them. i tried >sr <- lapply(s,function(x) colMeans(x, na.rm=TRUE)) but i am getting the following error >Error in colMeans(x, na.rm = TRUE) : 'x' must be numeric can it be done in any other way? and why i am getting this error?? thanks in advance.. elisa [[alternative

Hi all, I would like to know if it is posible by, someway, to get colMeans from a data.frame with numeric as well as character data, dispersed all over the object. Note that I would like to get colMeans neglecting character data. I am really in need of some function proceeding in that way… All the best Diogo André Alagador [[alternative HTML version deleted]]

On 21/04/2023 4:35 a.m., Michael Milton wrote: > I just checked out R-devel and noticed that the new "pipe extractor" > capability coming in 4.3 only works for the 4 extractor operators, but no > other standard operators like +, *, %*% etc, meaning that e.g. mtcars |> > as.matrix() |> _ + 1 |> colMeans() is a syntax error. In addition, we are > still subject to