search for: riskspan

What is the simplest way to extract a matched subexpression? Eg. in perl you can do "hello world" =~ m/hello (.*)/ which would return 1(true) and set $1 to the matched subexpression "world". -- View this message in context: http://n4.nabble.com/regular-expression-submatch-tp1459146p1459146.html Sent from the R help mailing list archive at Nabble.com.

Perhaps this is a common question but I haven't been able to find the answer. I have data with many factors, each taking many values. However, only relatively few combinations appear in the data, ie have nonzero counts, in other words the resulting table is sparse. Say we have 10 factors each with 10 levels. The result of table() would exceed the memory space (on a 32bit machine). Is there

Why when I assign 0 to an element of an integer vector does the type change to numeric? Here is a particularly perplexing example: > v <- 0:10 > v [1] 0 1 2 3 4 5 6 7 8 9 10 > class(v) [1] "integer" > v[1] <- 0 > class(v) [1] "numeric" #!! > -- View this message in context:

Why when I assign 0 to an element of an integer vector does the type change to numeric? Here is a particularly perplexing example: > v <- 0:10 > v [1] 0 1 2 3 4 5 6 7 8 9 10 > class(v) [1] "integer" > v[1] <- 0 > class(v) [1] "numeric" #!! > -- View this message in context:

I'd like to write some objects (eg arrays) to a log file. cat() flattens them out. I'd like them formatted as in 'print' but print only writes to stdout. Is there a simple way to achieve this result? Thanks -- View this message in context: http://www.nabble.com/print%28%29-to-file--tp24397445p24397445.html Sent from the R help mailing list archive at Nabble.com.

Suppose I have an n-diml array A and I want to extract the first "row" -- ie all elements A[1, ...] Interactively if I know 'n' I can write A[1,,,,,] with (n-1) commas. How do I do the same more generally, eg in a script? (I can think of doing this by converting A to a vector then extracting the approp elements then reshaping it to an array, but I wonder if there isn't a

When I do dev.new(), the resulting window comes to the front and grabs the focus. Is there a way to prevent this so I can continue working in other windows while the graphics are being produced? Thanks -- View this message in context: http://www.nabble.com/X-window-graphics----preventing-window-coming-to-front--tp24167763p24167763.html Sent from the R help mailing list archive at Nabble.com.

I've asked about custom sorting before and it appears that -- in terms of a user-defined order -- it can only be done either by defining a custom class or using various tricks with "order" Just wondering if anyone has a clever way to order "vintages" of the form 2002, 2003H1, 2003H2, 2004, 2005Q1, 2005Q2, etc some have H1 or H2, some have Q1,Q2,Q3,Q4, some are just plain

...sage in context: http://n4.nabble.com/If-else-statements-tp1678705p1679530.html > Sent from the R help mailing list archive at Nabble.com. > > > > ------------------------------ > > Message: 55 > Date: Tue, 23 Mar 2010 11:00:17 -0800 (PST) > From: sjaffe <sjaffe at riskspan.com> > To: r-help at r-project.org > Subject: [R] rpad ? > Message-ID: <1269370817109-1679534.post at n4.nabble.com> > Content-Type: text/plain; charset=us-ascii > > > Is anyone using rpad? Is there any documentation or > examples beyond that in > the 'man&...

...you could give me some more details about it or even if there is a book/manual that I could address to.. Thanks a lot, Chrysanthi. * *     [[alternative HTML version deleted]] ------------------------------ Message: 83 Date: Wed, 8 Jul 2009 12:03:21 -0700 (PDT) From: Steve Jaffe <sjaffe@riskspan.com> Subject: [R]  print() to file? To: r-help@r-project.org Message-ID: <24397445.post@talk.nabble.com> Content-Type: text/plain; charset=us-ascii I'd like to write some objects (eg arrays) to a log file. cat() flattens them out. I'd like them formatted as in 'print' but...

..._______________________________________________________ > D?couvrez toutes les possibilit?s de communication avec vos proches > > [[alternative HTML version deleted]] ------------------------------ Message: 35 Date: Mon, 4 May 2009 10:58:05 -0700 (PDT) From: Steve Jaffe <sjaffe at riskspan.com> Subject: [R] Cox Proportional Odds Model To: r-help at r-project.org Message-ID: <23373426.post at talk.nabble.com> Content-Type: text/plain; charset=us-ascii Is there a function, like coxph for the proportional hazard model, for fitting a discrete-time proportional odds model? --...

Suppose I have a vector of strings. I'd like to convert this to a vector of numbers if possible. How can I tell if it is possible? as.numeric() will issue a warning if it fails. Do I need to trap this warning? If so, how? In other words, my end goal is a function that takes a vector of strings and returns either a numeric vector or the original vector. Assuming this doesn't already

I can do this by writing (and reading) the file according to some format of my own devising, but I'm wondering if there is a built-in way to write and then restore a matrix with not only the dimnames (which write.table/read.table can preserve) but also the names(dimnames)? Example: > M <- matrix(1:4, 2, 2) > dimnames(M) <- list(xdim=c("a", "b"),

I'm sure I can put this together from the various 'apply's and split, but I wonder if anyone has a quick incantation: E.g. I can do tapply( data, groups, mean) but how can I do something like: tapply( list(data,weights), groups, weighted.mean ) ? (or: mapply is to sapply as ? is to tapply ) Thanks for your help. -- View this message in context:

Sounds simple but haven't been able to find it in docs: is it possible to sort a vector using a user-defined comparison function? Seems it must be, but "sort" doesn't seem to provide that option, nor does "order" sfaics -- View this message in context: http://www.nabble.com/custom-sort--tp23770565p23770565.html Sent from the R help mailing list archive at Nabble.com.

Sorry if this is somewhere in the fine manuals but I've been unable to locate it. Does dyn.load use a search path or does it just look in the current directory for non-fully-qualified filenames? If there is a search path, what is it? Thanks for your help -- View this message in context: http://www.nabble.com/dyn.load-search-path--tp25492214p25492214.html Sent from the R help mailing list

Is anyone using rpad? Is there any documentation or examples beyond that in the 'man' directory of the source? -- View this message in context: http://n4.nabble.com/rpad-tp1679534p1679534.html Sent from the R help mailing list archive at Nabble.com.

After interacting with a 3d plot (eg plot3d, persp3d), is there a way to capture the final settings of view angles, etc, so that the final plot could be easily reproduced? The plot functions themselves just return a vector of 'ids'. -- View this message in context: http://r.789695.n4.nabble.com/rgl-reproduce-final-state-of-interactive-plot-tp3667866p3667866.html Sent from the R help

Sounds simple but haven't been able to find it in docs: is it possible to sort a vector using a user-defined comparison function? Seems it must be, but "sort" doesn't seem to provide that option, nor does "order" sfaics -- View this message in context: http://www.nabble.com/custom-sort--tp23770565p23770565.html Sent from the R help mailing list archive at Nabble.com.

According to Writing R Extensions, the R_CallMethodDef struct has two optional fields for specifying the 'type' and 'style' (where 'style' is said to distinguish in/out/inout). But it gives no details of the possible values of 'style'. And looking in the header file Rdynload.h the definition of R_CallMethodDef does not include these two extra fields at all. (This is