similar to: save/load and package namespaces

So, I've been confused by this for a while. If I want to create functions in an apply, it only uses the desired value for the variable if I create a new local variable: > lapply(1:5,function(h){k=h;function(){k}})[[1]]() [1] 1 > lapply(1:5,function(k){function(){k}})[[1]]() [1] 5 > Normally, a function will use values for a variable if the variable is local to the definition of

Hi, from the man page ?methods, I expected to be able to build pairs (class,package) for a given S3 method, e.g., print, using attr(methods(print), 'info'). However all the methods, except the ones defined in base or S4 methods, get the 'from' value "registered S3method for print", instead of the actual package name (see below for the first rows). Is this normal

I would be very glad of pointers to information on how the concepts of packages, namespaces and environments are interrelated in R. I am trying to get a handle on this both so I can delve further into understanding other people's code and so I can organize my own in a more coherent manner. From my reading about environments it seems they function as what I would intuitively call

Dear R Users, I have searched through the archives but I am still struggling to find a way to process the below dataset. I have a dataset that has stratum and plot identifier. Within each plot there is variable (Top) stating the number of measurments that should be used to to calculate the mean to the largest "top" elements within one of the vectors (X). I would like to process

aDear list, I'm aware of the fact that I posted on something related a while ago, but I just can't sweat this off and would like to ask your for an opinion: The problem: Namespaces are great, but they don't resolve certain conflicts regarding name clashes. There are more and more people out there trying to come up with their own R packages, which is great also! Yet, it becomes

Good morning, we recently observed a problem with importing S3 generics from a foreign package (without namespace), defining a S3 method in a package _with_ namespace and the `cleanEx()' function which is automatically generated and executed before examples are run by R CMD check. To be more precise. Package `strucchange' defines a S3 generic sctest <- function(x, ...)

I was surprised to notice that statements like: h = function(...){list(...)}(x=4) do not throw syntax errors. R claims that 'h' is now a function, but I can't seem to call it. > h = function(x){list(x)}(4) > is(h) [1] "function" "OptionalFunction" "PossibleMethod" > h() Error in list(x) : 'x' is missing > h(4) Error in h(4)

Hello, I'm a newbie to R, I have a quesiton. I'm a bit confused on global variable assignments. I have the following situation. I have 2 global variables current_idx and previous_idx. *These 2 global variables have to be set by a method in a reference class*. Essentially, using <<- assignment operator should work right ? But, I get this warning Non-local assignment to non-field

This happened to me with R-1.7.0, Linux RH9: ------------------------------------------------------------------ > q() Save workspace image? [y/n/c]: y Warning messages: 1: namespaces may not be available when loading 2: names in persistent strings are currently ignored gb at lasker:~/R/test$ R R : Copyright 2003, The R Development Core Team Version 1.7.0 (2003-04-16) R is free software

Thanks for all your great answers. The app I?m working on is indeed an exploratory data analysis tool for gene expression, which requires a bunch of bioconductor packages. I guess for now, my best solution is to divide my app into modules and load/unload packages as the user switch from one module to another. This brought me another question: it seems that unload package with the

Hi there, I wrote a function that wraps MASS::boxcox as: bc <- function(vec) { lam <- boxcox(lm(vec ~ 1)) lam <- lam$x[which.max(lam$y)] (vec^lam - 1)/lam } When I invoke it as: > x <- runif(20) > bc(x) Error in eval(predvars, data, env) : object 'vec' not found I have googled, and rewrote the above function as: bc <- function(vec) { dat <<-

Hi there, I wrote a function that wraps MASS::boxcox as: bc <- function(vec) { lam <- boxcox(lm(vec ~ 1)) lam <- lam$x[which.max(lam$y)] (vec^lam - 1)/lam } When I invoke it as: > x <- runif(20) > bc(x) Error in eval(predvars, data, env) : object 'vec' not found I have googled, and rewrote the above function as: bc <- function(vec) { dat <<-

Hi, further down from the problem I asked about yesterday I encounter the following problem (please appologize for the lengthy mail - I have not found a brief example making the issue clear): - using R packages making use of namespaces & - S4 classes when using --with-package-versions in the install call: Pkgs install ok and the first pkg 'base' can be loaded in R

In the documentation the closed thing I see to an explanation of this is that ?detach says "Unloading some namespaces has undesirable side effects" Can anyone explain why unloading tseries will load zoo? I don't think this behavior is specific to tseries, it's just an example. I realize one would not usually unload something that is not loaded, but I would expect it to do

>>>>> Michael Lawrence <lawrence.michael at gene.com> >>>>> on Mon, 26 Jan 2015 05:12:55 -0800 writes: > A isNamespaceLoaded() function would be a useful thing to > have in general if we are interested in readable code. An > efficient implementation would be just a bonus. Good point (readability), and thank you for the support! Note

I''m curious if anyone else has a need to disable *convertHTMLLineBreaks*. I actually need to show the <p>''s and <br>''s in the editor and browsing the source code, see that this isn''t configurable. Jamie

Hi, First a bit of disclaimer... I haven't isolated this problem into an easy to reproduce case, and I won't be surprised if the root cause is a fault in my code's use of name spaces or some such. The error I'm seeing is one in which the desired method is not found. What worries me in terms of my expectations of how to debug the problem is that showMethods and selectMethod both

Dear all, in our current setting we have our packages stored on a (rather slow) network drive and need to invoke short R scripts (using RScript) in a timely manner. Most of the script's runtime is spent with package loading using library() (or loadNamespace to be precise). Is there a way to cache the package namespaces as listed in loadedNamespaces() and load them into memory before the

Hello, I am running R on a server that several people share. Previously we all had separate libraries for R. I have set up R so everyone on the server shares the same library and I downloaded the latest version of R and installed it on the main drive of our server in the "Program Files" folder (obvious enough). I changed the Environmental Variables in the advanced system setting so

Hey folks, I ran into a few people at RubyConf who were having 99% CPU issues. Please contact me if you meet the following criteria: 1. You are running a production site. 2. You are experiencing 99% CPU errors. 3. This is frequent enough that you cannot manage it. Thank you. Please contact me off-list about it. -- Zed A. Shaw, MUDCRAP-CE Master Black Belt Sifu http://www.zedshaw.com/