similar to: How to refer the element in a named list?

Hi, I want to know what is there returned values of 'lm'. 'class' and 'lm' does not show that the returned value has the variable coefficients, etc. I am wondering what is the command to show the detailed information. If possible, I aslo want the lower level information. For example, I want to show that 'coefficients' is a named list and it has 2 elements.

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

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, 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

Hi, I have the following matrix, which is printed %e format (in C's way). I am wondering how make it be printed in %f format (in C's way)? Regards, Peng > significant_analysis_results[,7:8] pval(ki-wt) pval(ko-wt) Nab2 1.913348979e-06 2.731944670e-09 Rasal1 2.482254110e-05 1.054711084e-05 Ccndbp1 6.307674516e-08 2.268947934e-04 Svep1 0.000000000e+00

Hi, I've a list of list. I want to extract an element by the rownames. I can extract it by: data[[1]][[1]][[4]][1] But I want to exctract it by a command like this: data[[1]][["B0"]][["smac"]][["cont"]][1] It's possible? Thanks, Alfredo > str(data) List of 1 $ :List of 4 ..$ :List of 4 .. ..$ : num [1, 1:3] 0.4 0.458 0.5 .. ..$ : num

Dear list members, I am trying to estimate parameters of the AR(1)-GARCH(1,1) model. I have one additional dummy variable for the AR(1) part. First I wanted to do it using garchFit function (everything would be then estimated in one step) however in the fGarch library I didn't find a way to include an additional variable. That would be the formula but, as said, I think it is impossible to add

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]

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",

Hi, I run the following commands. 'A' has 3 levels and 'B' has 4 levels. Should there be totally 3+4 = 7 coefficients (A1, A2, A3, B1, B2, B3, B4)? > a=3 > b=4 > n=1000 > A = rep(sapply(1:a,function(x){rep(x,n)}),b) > B = as.vector(sapply(sapply(1:b, function(x){rep(x,n)}), function(x){rep(x,a)})) > Y = A + B + rnorm(a*b*n) > > fr =

Dear all, I just received a file from a colleague in spss. The read.spss could not finish the file due to an error (Unrecognized record type 7, subtype 18 encountered in system file) so instead I converted the file using stat-transfer. Looking at my data I see that most labels are in the attributes and I?d love to access them and assign the pertinent variables to factors without doing the whole

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 =

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 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

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

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?