search for: environment

Full_Name: Henrik Bengtsson Version: 1.6.0, 1.5.1 OS: WinXP Pro Submission from: (NULL) (128.250.252.82) The following example, which I tested on both R v1.5.1 and R v1.6.0 on WinXP Pro, shows the problem I encountered when trying to use the class attribute of an environment: # Define method print() for class Environment C print(e) # gives: # [1] "An Environment!" # Exit [R] q(save="yes") When restarting [R] and loading the previous workspace something goes wrong(?): % R print(e) # gives: # <environment: 01BE52F4> # attr(,"class&quot...

Hi, I'm trying to understand environment object in R. I used the example: f <- function(x) { y <- 10 g <- function(x) x + y return(g) } h <- f() h(3) then i saw that f return an environment > h function(x) x + y <environment: 01B28570> but I coudn't access to x and y obj...

In ?exists it says: inherits: should the enclosing frames of the environment be searched? I believe what it is saying is that if inherits is TRUE and it fails to find the variable it will look in the parent environment and the parent of the parent, etc. (as opposed to looking in the calling frame next and the caller of the caller, etc.) Now I thought that standard termino...

Hello R devel/help, I ran into this strange behavior: # showstack is supposed to walk through the stack of parent # environments when it is called: showstack = function() { env = environment() for(i in 1:12) { env = do.call(parent.frame, list(), env=env) print(env) } } # a simple chain of functions: g3=function(t) showstack() g2=function(w) g3(w) g1=function(z) g2(z...

Hello R devel/help, I ran into this strange behavior: # showstack is supposed to walk through the stack of parent # environments when it is called: showstack = function() { env = environment() for(i in 1:12) { env = do.call(parent.frame, list(), env=env) print(env) } } # a simple chain of functions: g3=function(t) showstack() g2=function(w) g3(w) g1=function(z) g2(z...

According to :https://stat.ethz.ch/R-manual/R-devel/library/base/html/environment.html "If |fun| is a function or a formula then |environment(fun)| returns the environment associated with that function or formula. If |fun| is |NULL| then the current evaluation environment is returned." > environment() <environment: R_GlobalEnv> > environment(environme...

...of various R-core folks who feel that mle() doesn't need a "data" argument, and that users would be better off learning to deal with function closures, I am *still* trying to make such things work in a reasonably smooth fashion ... Is there a standard idiom for "merging" environments? i.e., suppose a function has an environment that I want to preserve, but _add_ the contents of a data list -- would something like this do it? Is there a less ugly way? x <- 0 y <- 1 z <- 2 f <- function() { x+y+z } f2 <- function(fun,data) { L <- ls(pos=environment...

My custom external nodes script sets the environment variable, but Puppet ignores it. For testing, I have a manifest that deploys this template to a file: environment = <%= environment %> The output from my external nodes script: --- classes: - devhost environment: development parameters: memcached_memory: ''32'' But runnin...

Hi, exists("foo", inherits=TRUE) check whether an object named "foo" exists, and get("foo", inherits=TRUE) retrieves it. I'm looking for a similar function to exists() that returns the environment where the object "foo" exists, iff at all. If not found, NULL is returned. Does that exist? EXAMPLE #1: > sample2 <- base::sample > env <- where("sample2", inherits=TRUE) > env <environment: R_GlobalEnv> Note the difference to: > obj <- get("...

I''ve setup dynamic environments using git but I''m confused about how environments are actually supposed to be used. We''re a small ISP and have freeradius servers, VPN servers and web servers. I''ve been using environments to enable me as the sysadmin to build and test new manifests/modules before de...

Hi. contrary to other environments, the attributes of a *package* environment are dropped (from the new environment) when attach():ing it to the search() path. This might or might not be surprising, but have some side effects if rearranging/attaching package environments. # Example - Regular environments env <- new.env() attr(...

In this case the environment contains the variables local to the function, and its enclosure is the environment of the enclosing function.(R-lang:p11) I want to know if the "enclosing function" means the closure of the function? for example ,if I call function mean(),and the create an environment,say e1,then the enc...

Hi, I am trying to place my own functions in the nlme environment: The following statement works: environment(coef.corSPT) <- environment(getS3method("coef","corSpatial")) but this one returns an error: environment(get("coef<-.corSPT")) <- environment(getS3method("coef<-","corSpatial")) Error in en...

...cumulate( xx.begin(), xx.end(), 0.0));' > add <- cxxfunction(signature(x = "numeric"), body, plugin = "Rcpp") cygwin warning: MS-DOS style path detected: C:/R-215~1.2/etc/i386/Makeconf Preferred POSIX equivalent is: /cygdrive/c/R-215~1.2/etc/i386/Makeconf CYGWIN environment variable option "nodosfilewarning" turns off this warning. Consult the user's guide for more details about POSIX paths: http://cygwin.com/cygwin-ug-net/using.html#using-pathnames C:/R-2.15.2/library/Rcpp/lib/i386/libRcpp.a(RObject.o):RObject.cpp:(.text+0x3ac): undefined referenc...

...re statements involved. >> >> I don't know how I managed to compile only using direct access of >> ${imap.user} before since now I get an unknown namespace error on my >> test script. >> >> But doing it this way compiles: >> >> require ["environment", "variables", "vnd.dovecot.debug"]; >> >> if environment :matches "imap.user" "*" { >> set "u" "${1}"; } >> debug_log "Found username: \${u}"; >> if environment :matches "name" &qu...

...ing up against the problem that packages use coding idioms that are unfamiliar to me. A difficult thing for me is explaining scope of variables in R functions. When should we pass an object to a function, when should we let the R system search about for an object? I've been puzzling through ?environment for quite a while. Here's an example from one of the packages that I like, called "ltm". In the function "ltm.fit" the work of calculating estimates is sent to different functions like "EM' and "loglikltm" and "scoreltm". Before that, this is u...

...in formula and data frame. But, from a statistical user point of view this seems to be counter-productive. At best it works as if the user is passing in the name of the weights variable instead of values (I know this is the obvious consequence of NSE). lm() takes instance weights from the formula environment. Usually that environment is the interactive environment or a close child of the interactive environment and we are lucky enough to have no intervening name collisions so we don't have a problem. However it makes programming over formulas for lm() a bit tricky. Here is an example of the issue....

...ith a somewhat complicated structure in which I need to deal with a function that takes ``basic'' arguments and also depends on a number of parameters which change depending on circumstances. I thought that a sexy way of dealing with this would be to assign the parameters as objects in the environment of the function in question. The following toy example gives a bit of the flavour of what I am trying to do: foo <- function(x,zeta) { for(nm in names(zeta)) assign(nm,zeta[nm],envir=environment(bar)) bar(x) } bar <- function(x) { alpha + beta*exp(gamma*x) } v <- c(alpha=2,beta=3,gamma...

complete patch. some parts were missing before diff --git a/src/lib-sieve/plugins/environment/ext-environment-common.c b/src/lib-sieve/plugins/environment/ext-environment-common.c --- a/src/lib-sieve/plugins/environment/ext-environment-common.c +++ b/src/lib-sieve/plugins/environment/ext-environment-common.c @@ -24,7 +24,8 @@ static const struct sieve_environment_item *core_env_items[] = {...

Hello, in the BSD Authentication system the login script can request environment variables to be set/unset. The call to auth_close() in auth-passwd.c does change the current environment, but those changes are lost for the child environment. It would be really useful to add some kind of mechanism to get those changes into the child environment. I've added two possible solut...