similar to: How to wait for a user response in Rscript?

Hi, I am wondering how to pop up the graphics window from Rscript. I run the following code, but I don't see the graphics window, even transiently. Regards, Peng $ Rscript plot.R > x=1:10 > y=1:10 > plot(x,y) >

read.table terminates the program if the input file is empty. Is there way to let the program continue and return me a NULL instead of terminating the program? $ Rscript read_empty.R > read.table("empty_data.txt") Error in read.table("empty_data.txt") : no lines available in input Execution halted $ cat read_empty.R read.table("empty_data.txt") $ cat

Hi, I run the following command and try to save the commands that have been run in the script. But it seems that no history is recorded. Is it because that the history is not recorded in Rscript? Regards, Peng $ Rscript savehistory.R > f=tempfile() > f [1] "/tmp/Rtmp7WBjGG/file327b23c6" > history() Error in savehistory(file) : no history available to save Calls: history ->

I don't understand why I can not close 'f'. This may be very simple, but I don't see why. Could somebody let me know? $ cat gzfile.csv "","V1","V2","V3","V4","V5" "1",1,5,9,13,17 "2",2,6,10,14,18 "3",3,7,11,15,19 "4",4,8,12,16,20 $ Rscript gzfile.R > f =

Hi, $ cat commandArgs.R args=commandArgs(trailingOnly=TRUE) args[1]+10 I have the above code. But the following command line gives me an error. I am wondering what is the correct way to convert a string to a vector? $ Rscript commandArgs.R 1:3 > args=commandArgs(trailingOnly=TRUE) > args[1]+10 Error in args[1] + 10 : non-numeric argument to binary operator Execution halted Regards, Peng

Hi, I run the following script. I don't understand why the second 'length(args)' does not show anything but the first one shows '0'. Is it because the command 'q()' affects anything in the if-statement. However, if I change the second 'length(args)' to 'print(length(args))', the script will print the length of 'args'. Can somebody let me know

Hi, See the code below. 'x' is a frame. x$C1 are all numbers 1, 2 and 3. 'as.matrix(x)' convert x$C1 to strings "1", "2" and "3". I'm wondering how to maintain that the first column of 'as.matrix(x)' still numbers. Regards, Peng $ cat read.csv "C1","C2" "1","x" "2","y"

Hi, Right now, I hardcode the file name in the script. But when I change the script name, I have to change the file name in the script to make sure the file name inside the script is synchronized with the script name. I am wondering if there is an automatic way to get the script file name in a script. Regards, Peng $ Rscript get_file_name.R > print('get_file_name.R') [1]

Dear R-devel members, recently, I ran into the following error message (R-devel 2018-01-31): 'Rscript' should not be used without a path -- see par. 1.6 of the manual I would like to know more about it, why is it required to run Rscript with a path, and where is that par. 1.6 of the manual. I get this error message during Travis r-devel build of my package for generating makefiles. I

Please see the following example. I can not write '"' to a csv file successfully. Could somebody let me if it is possible to write '"' to a csv file with the default setting of write.csv? my_home$ Rscript main_quote.R > x=rbind( + "\"A\"" + , "\"B\"" + ) > x [,1] [1,] "\"A\"" [2,]

Hi, I know that I can use the following script to get the command line options for an R script. But the output shows two many irrelevant arguments. For example, I only want to pass "a", "b" and "c" to the script. The first 5 elements in the variable 'args' are not what I want. I am wondering what is the correct way to pass command line options to an R script.

Hi, I am wondering if some experienced users would help put the ready-to-run code of the examples in the manuals. It would help new users learn R faster by putting all the examples in an ready-to-run R script file. Can somebody help do so sometime and post the code along with the pdf manuals? http://cran.r-project.org/manuals.html Regards, Peng

I don't find a function to print a string to file. Would somebody let me know what function I should use?

Some examples in the help page are too long to be copied from screen. Could somebody let me know some easy way on how to extract the example to a file so that I can play with them?

In the following code, 'multiply' doesn't multiply a at x by 2. I'm wondering how to define a method that can change the slot of a class. $ Rscript setGeneric.R > setClass( + Class='A', + representation=representation( + x='numeric' + ) + ) [1] "A" > > setMethod( + f='initialize', +

We have seen problems with a number of packages which use R/Rscript to run R code in configure or makefiles. (a) You must give a full path: there need be no version of R in the path, and if there is it might not be the version/build of R under which package installation is being done. So the general form is to use ${R_HOME}/bin/R to select the right version. And since ${R_HOME} might

Hey guys, I was wondering how to create this sequence: 1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3... with the '1, 2, 3' repeated over 10 times. Also, is there a simple method to generate 1, 1, 1, 2, 2, 2, 3, 3, 3? Anyways, any help with be greatly appreciated! -- View this message in context: http://www.nabble.com/Sequence-generation-tp25205593p25205593.html Sent from the R help mailing list

I found this paper on ANOVA on unequal error variance. Has this be incorporated to any R package? Is there any textbook that discuss the problem of ANOVA on unequal error variance in general? http://www.jstor.org/stable/2532947?cookieSet=1

Hello R-Help I have a question about the "behind the scenes" behaviour of the Rscript -e command and particularly its interaction with Sweave and tempdir(). We are trying to deploy R as a web service to do water quality analyses and have been writing software to call Sweave via Rscript eg: cmd> Rscript -e Sweave('sweavefile.Rnw') One problem we have been having is that

Hi, I'm learning the tutorial. http://llvm.org/docs/tutorial/ I'm wondering if there is already a git repository of the examples in the tutorial so that I don't have to copy the code from the webpage. Thanks! -- Regards, Peng