similar to: fork package problem

Dear all, I would like to start a process from an R program in such a way that I can both feed input into the process and read the process's output. It seems that in R, I can have a pipe for writing into another process's input or a pipe for reading from another process's output, but not both. Doing both necessitates forking, such that the child can start the external process and

Dear all, I would like to start a process from an R program in such a way that I can both feed input into the process and read the process's output. It seems that in R, I can have a pipe for writing into another process's input or a pipe for reading from another process's output, but not both. Doing both necessitates forking, such that the child can start the external process and

Hi, for presentation purposes I would like to clear to whole console window (like in a UNIX terminal: 'clear'). Is there such a function? If not, I could image that is not too hard to write such a function. Cheers, Hans

Hello, I've compiled Samba 4.7 from repository using a Debian 9 machine and I've noticed that the system started to create zombie processes of samba: # ps aux |grep "Z" USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 502 0.0 0.0 0 0 ? Z 13:01 0:00 [samba] <defunct> root 1346 0.0 0.0 0 0 ? Z

Dear all R-helper, if I want to use stdout from other language as my R program input ,which is the best way for design the API,using Pipe function or produce a temporary file,using scan function to read the file ? thanks Michael

Can you try with this systemd unit file. Restarting does not close all prosesses with that one. ( you need : ExecReload=/bin/kill -HUP $MAINPID ) Jessie used probely sysv and not systemd, which should explain why there are so many zombies. [Unit] Description=Samba AD Daemon Documentation=man:samba(8) man:samba(7) man:smb.conf(5) After=network.target [Service] Type=notify NotifyAccess=all

Hello... I would like to use R for 'pipelining' data among several programs. I'm wondering how I can use R to call another program, feed that program a set of parameters, and retrieve the output. E.g., I have an executable that, when opened, prompts the user to enter a set of parameters. The program then executes & prompts the user for the name of an output file. I need to

Hi, I am trying to figure a way to allocate a string SEXP so that gc() won't ever collect it. Here is a little bit of a background. Suppose I want to write a .Call-callable function that upon each call returns the same value, say mkChar("foo"): SEXP getFoo() { return mkChar("foo"); } The above implementation doesn't take advantage of the fact that

The release schedule has now been set with a release date on April 18. The detailed procedure can be found at http://developer.r-project.org/ (it is not quite there yet, but will appear after a short propagation delay.) The main point for non-developers is that we start making alpha tarballs on March 21 and beta tarballs on April 4. Only very simple and/or critical bugs are fixed in the last

I have used Sweave a lot the latest year, but never really used any long function calls. If I have code which look like this ------------------------------------------------------------- gof <- benthic.flux(ID="Gulf of Finland", meas.conc=conc, bw.conc=bw.conc, time=times,

Can anyone point out why this is not working? y<-read.table(pipe(' awk '{ n = $1; sub( ".*" $1 " " ,"") ; while ( n-- ) print }' temp.txt ')) [[alternative HTML version deleted]]

Hello, This code works fine but is so fast I can't see anything but the last plot. for (i in nrow(X)){ plot(as.numeric(d[i,])) } I'd like to view a plot every 500 milliseconds, nrow(X) = 400. How? Thanks -- View this message in context: http://www.nabble.com/Plot-timer-in-a-for-loop-tp17741975p17741975.html Sent from the R help mailing list archive at Nabble.com.

Hello, We are running Asterisk-1.0.12 in a CentOS 4-4.2 system, kernel 2.6.9-42.0.3.ELsmp. We have some custom AGI, and when we launch Asterisk the system works fine. But **after some time**, each AGI execution generates a zombie <defunct> process. We believe that it's not a problem in the AGI code, because Asterisk+AGI is working fine in the first "n" minutes/hours. This

How precise is R numerically? For example I wrote the following function for calculating the volume of the ball inscribed in the unit cube in m dimensions. In order to see what happens in 40 dimensions, I created an output of 24 digits. But how many are precise? Thanks Josef Eschgf?ller Ferrara --------------------------------------- Vol = function (m) {if (m<=1) 1 else Vol(m-2)*pi/(m+m)}

Hi! I have written an R-package (http://tocsy.agnld.uni-potsdam.de/wavelets/index.html) in R 2.4.1 that requires the ts() function. Users using R 2.5.0 now have a problem installing this package. I checked the package using R 2.5.0: _______________________________________________________ * Installing *source* package 'sowas' ... ** libs gcc -std=gnu99

after booting a CentOS 4.2 system I have a bunch of zombies... root 2828 0.0 0.0 0 0 ? Z 14:41 0:00 [chvt] <defunct> My read from googling this is chvt stems from something that involves a shell. They ***may*** have been created from my attempts to start mysqld which isn't working (I will start another thread) but no efforts to kill them off are working...

Hi, I am using the following command to print to a file (I omitted the file details): cat( paste( paste(orientation, start, end, names,"\n"), paste(start, end, "exon\n"), sep="")) where "orientation" and "names" are character vectors and "start" and "end" are integer vectors. The problem is that R coerce the integer vectors

Can anyone please help me understand whats happening here? Thanks Tom getAmpRatio<-function(v_amps){ #calculates the amplitude ratios between the 3 largest amps and the rest bigamp<-0 map<-rep(TRUE,length(v_amps)) for(iLoc in 1:3){ bigamp<-bigamp+max(v_amps) map[which.max(v_amps)]<-FALSE v_amps<-v_amps[map]

Hi Dumb question time again, for which I apologise. I have a variable that contains the following numerical text "04010". This is the name to access a list: > as.list(KEGGPATHID2NAME)$"04010" [1] "MAPK signaling pathway" Marvellous! Except I want to do that when "04010" is assigned to a variable called path and I can't figure out how to do it!

We have an occasional problem which manifests with multiple processes being created for a particular user. For example, for a user "xy004": xy004 8463 0.0 0.0 6.02M 0K ?? IW 11:48:59 0:02.02 smbd xy004 9426 0.0 0.0 5.99M 0K ?? IW 11:52:18 0:03.68 smbd xy004 10433 0.0 0.0 5.81M 0K ?? IW 12:17:20 0:00.85 smbd xy004