Displaying 20 results from an estimated 20000 matches similar to: "How to execute a R script but outputting the result to the screen?"
2009 Sep 06
2
How to pop up the graphics window from 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)
>
2009 Sep 06
2
How to wait for a user response in Rscript?
Hi,
In 'example(barplot)' running in R, I see 'Hit <Return> to see next
plot:', then R waits for my input. I am wondering how to wait for a
user response in Rscript.
Regards,
Peng
2010 Jan 01
5
How to not to terminate read.table if the input file is empty?
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
2009 Sep 22
1
How to get the current script file name in the script?
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]
2009 Aug 28
1
How to convert a string passed as an argument to a vector?
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
2009 Sep 07
1
Why this statement does not print anything in an if-statement that includes 'q()'?
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
2009 Sep 16
1
How to convert a frame to a matrix while maintaining that a number is still a number?
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"
2009 Oct 27
2
Why I get this error? Error in close.connection(f) : invalid connection
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 =
2009 Aug 20
1
Command line option to an R script running through Rscript
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.
2009 Aug 10
5
Example scripts for R Manual
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
2009 Sep 05
1
Is 'history' recorded in Rscript?
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 ->
2019 Jan 28
2
How to generate .bc file using configure && make on Mac OS X?
>
> but doesn't emit optnone and nounwind attributes
>
s/nounwind/noinline
On Mon, Jan 28, 2019 at 11:35 AM Jakub (Kuba) Kuderski <
kubakuderski at gmail.com> wrote:
> As far as I understand, gllvm doesn't run LTO pipeline or any cross-module
> optimization, and the optimization level provided is only used to compile
> each Translation Unit separately.
> If you
2009 Nov 22
1
Why F value and Pr are not show in summary() of an aov() result?
I have the following code. I'm wondering why summary() doesn't show F
value and Pr?
Rscript multi_factor.R
> a=3
> b=4
> c=5
> d=6
> e=7
>
> A=1:a
> B=1:b
> C=1:c
> D=1:d
> E=1:e
>
> X=matrix(nr=a*b*c*d*e,nc=5)
> colnames(X)=LETTERS[1:5]
>
> for(i_a in 1:a-1) {
+ for(i_b in 1:b-1) {
+ for(i_c in 1:c-1) {
+ for(i_d in 1:d-1) {
+
2012 Dec 30
4
[LLVMdev] git repository of the tutorial
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
2009 Sep 14
3
How to refer to the last a few rows?
Hi,
x=matrix(1:60,nr=6)
I can refer the last 2 rows by
x[5:6,]
If I don't know the total number of rows is 6, is there a way to refer
the last 2 rows?
Regards,
Peng
2010 Jan 21
1
How to write '"' to a csv with the default setting of write.csv?
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,]
2009 Oct 02
3
How to get duplicated items in a vector?
Hi,
> x=c(rep(1,3),rep(3,2))
> x
[1] 1 1 1 3 3
> duplicated(x)
[1] FALSE TRUE TRUE FALSE TRUE
>
As shown in the above code, 'duplicated' doesn't return 'F' for the
first '1' and first '3' in 'x'. I am wondering if there is a function
that can return an indicator for any element whether it appears in a
vector twice or more.
Regards,
Peng
2009 Sep 14
2
What are the return values of aov?
Hi,
I don't quite understand what are the return values of aov. I know
that it has 'coefficients'. But I need to know what all the other
return values are. Can somebody let me know how to figure them?
Value:
An object of class 'c("aov", "lm")' or for multiple responses of
class 'c("maov", "aov", "mlm",
2009 Sep 05
2
How to 'apply' on multiple arguments?
Hi,
I am wonder if there is a function similar 'apply' but it could accept
multiple arguments?
For example, I have the following matrix.
x=matrix(1:6,nr=2)
y=matrix(1:6,nr=2)
I want to find a function that can be used to compute the linear
regression for each pair of rows in the two matrices?
multiple_apply(x,y,1,function(u,v){lm(u ~ v)}
That is, I wound like something like the above
2019 Jan 28
2
How to generate .bc file using configure && make on Mac OS X?
I did a sanity check and run some of the bitcode I complied with gllvm and
it seems to work fine under lli. The only issues is to make sure you load
all the (external) libraries the bitcode needs. I highly suggest you run a
debug version of lli under a debugger and see what exactly happens.
On Mon, Jan 28, 2019 at 12:45 PM Peng Yu <pengyu.ut at gmail.com> wrote:
> It seems that it does