Re: [R] graphing help: line runs off top of graph

2010-02-04 Thread Faheem Mitha
On Wed, 3 Feb 2010, David Winsemius wrote: args <- commandArgs() filename = args[6] m = read.csv(filename, header=TRUE) m = data.frame(scale(m, center=FALSE, scale = c(60, 1024^2, 1024^2, 1))) mRSS = m[,c("time", "RSS")] mVSZ = m[,c("time", "VSZ")] mPERCENT = m[,c("time", "X.MEM")] pdf(file=pa

[R] graphing help: line runs off top of graph

2010-02-03 Thread Faheem Mitha
Hi, See the files at http://bulldog.duhs.duke.edu/~faheem/R/ Usage is $ Rscript memgraph.R meminfo.csv Output is meminfo.pdf. As you can see, one of the lines (blue) runs off the top of the graph. Can anyone suggest a way to avoid this happening? Please CC me on any reply. Thanks in advan

Re: [R] selectively importing functions etc. from files

2008-11-30 Thread Faheem Mitha
Hi Charles, Thanks for the reply. On Sun, 30 Nov 2008, Charles C. Berry wrote: On Sat, 29 Nov 2008, Faheem Mitha wrote: Hi, If I want to import the contents of a R file into another one, I can do source("foo.R") However, this imports everything from foo.R, including all func

[R] selectively importing functions etc. from files

2008-11-29 Thread Faheem Mitha
Hi, If I want to import the contents of a R file into another one, I can do source("foo.R") However, this imports everything from foo.R, including all functions and global variables. Is there a way of selectively importing individual functions etc., in a similar fashion to Python's from fo

Re: [R] web error message

2008-11-25 Thread Faheem Mitha
Hi, This page is now Ok. Thanks, Faheem. On Mon, 24 Nov 2008, Faheem Mitha wrote: Hi, I'm getting an error from http://stat.ethz.ch/R-manual/ linked from http://www.r-project.org/ as follows ** Forbidden

Re: [R] printing help files directly from R prompt

2008-11-25 Thread Faheem Mitha
On Tue, 25 Nov 2008, Uwe Ligges wrote: See ?help and its argument "offline" Uwe Ligges Thanks, that's very helpful. This doesn't exactly print, but saves the help page to a ps file, which is as good as. help(write.table, offline=TRUE) No latex file is available: shall I try to create i

[R] web error message

2008-11-24 Thread Faheem Mitha
Hi, I'm getting an error from http://stat.ethz.ch/R-manual/ linked from http://www.r-project.org/ as follows ** Forbidden You don't have permission to access /R-manual/ on this server. Additionally, a 403 Forbidden err

[R] printing help files directly from R prompt

2008-11-24 Thread Faheem Mitha
Hi, Does anyone know how to print help files from R's prompt? One can read the help text for read.table by doing ?read.table on the R prompt. In a similar fashion, can I print the help read.table without having to resort to a web browser? Please CC me on any reply.

Re: [R] R ORM?

2008-11-18 Thread Faheem Mitha
Hi Hans, Thanks for the reply. On Tue, 18 Nov 2008, Hans Werner Borchers wrote: Faheem Mitha email.unc.edu> writes: Hi, Does anyone know of an R ORM (Object Relational Mapper)? I'm thinking of something similar to sqlalchemy (http://www.sqlalchemy.org/). Alternatively or addi

[R] R ORM?

2008-11-17 Thread Faheem Mitha
Hi, Does anyone know of an R ORM (Object Relational Mapper)? I'm thinking of something similar to sqlalchemy (http://www.sqlalchemy.org/). Alternatively or additionally, can people offer suggestions about managing relational databases from R. I'm currently using postgresql, but would like a

Re: [R] subsetting with column name as string

2008-08-06 Thread Faheem Mitha
On Wed, 6 Aug 2008, milton ruser wrote: Try this foo1 = function(val) { return(d[val]) } foo1("x") Thanks for the suggestion. I appreciate it. My original question wasn't just a pragmatic "how do I do this" type question. I was also wondering about the language issues involved.

[R] subsetting with column name as string

2008-08-06 Thread Faheem Mitha
Hi, Consider the following x = c(1,2) y = c(3,4) d = data.frame(cbind(x,y)) d$x [1] 1 2 d$"x" [1] 1 2 foo = function(val) + { + return(d$val) + } bar = function() + { + return(d$"x") + } foo("x") NULL bar() [1] 1 2 I'm a little surprised that R accepts both the form d$x and

Re: [R] checking whether a file is empty

2008-04-30 Thread Faheem Mitha
On Wed, 30 Apr 2008, Prof Brian Ripley wrote: What is wrong with file.create("foo") [1] TRUE file.info("foo")$size [1] 0 file.remove("foo") ? Thanks, that works for me. I really wonder what searches you did: help.search("file") come up with file.info. I did a Google search for "R

[R] checking whether a file is empty

2008-04-30 Thread Faheem Mitha
Hi, Is there a way to check whether a file is empty in R. I did the customary searches, but did not find anything. Please cc me on any reply. Thanks, Faheem. __ R-help@r-project.org mailing

Re: [R] unix.time

2008-03-26 Thread Faheem Mitha
On Wed, 26 Mar 2008, Prof Brian Ripley wrote: > Where did you get that idea from? Not from the help page: No. From direct observation. Ie. comparing what the function actually returned vs actual elapsed time. In one case I observed, these two are dramatically different. It is possible I made

[R] R objects layout

2008-03-26 Thread Faheem Mitha
Hi, Can anyone point me to documentation of how R objects such as vectors, lists, matrices and data frames are laid out in memory? For example, which of these are laid out as a 1-d array, 2-d array and so forth? The R Internals document seems like the natural place to look, but I don't see it

[R] unix.time

2008-03-26 Thread Faheem Mitha
Hi, As far as I can tell, The R function unix.time calculates elapsed CPU time. Is there a command within R to measure actual elapsed time (I think this is sometimes referred to as wall time)? For example, the time command from GNU time calculates the actual elapsed time, as far as I can tell

Re: [R] truncating a data frame based on a function

2007-09-21 Thread Faheem Mitha
On Fri, 21 Sep 2007, Greg Snow wrote: > Look at the subset function (?subset), it may do what you want. This looks useful. Thanks. However, how can I write an expression selecting certain rows (subset argument) in the case of a matrix? when it does not have named columns? The documentation do

[R] truncating a data frame based on a function

2007-09-21 Thread Faheem Mitha
Hi, Consider the following example. > a = c(1,2,3); b = c(4,5,6); c = cbind(a,b); c[(2 < c[,1]) & (c[,1] < 4),] a b 3 6 So, the idea is to select rows for which the value in the first column is between 2 and 4. This works, however, I don't like having to reference a explicitly in this fashio