similar to: Data manipulation question

Dear R-users! I am using R 1.7.0, under Windows XP. Having some hospital discharge data (admission date and discharge date for each patient), I want to get the number of patients in the hospital on a given date. My data look like (simple example): > x <- data.frame(patid=c("pat1", "pat2"), adm.date = c("15.03.2002", "16.03.2002"),

Hello, I have a general help question that some of you might be able able to help. I would like to design a study (a two group comparison) based on reduction on events(say hospital admissions). In a previous study hospital admission rate of 140 admissions per 72 patients (over a 4 month period) has been observed. That is rate is about 1.9. In order to see the admission rate reduction of 50% over

I'm trying to fit a Cox proportional hazards model to some hospital admission data. About 25% of the patients have had at least one admission, and of these, 40% have had two admissions within the 12 month period of the study. Each patients has had one of 4 treatments, and one of the treatment groups has had no admissions for the period. I used:

Hello, I have some problems with calling the map_data function in maps package. Not so long ago it was not a problem, but for some reasons in July this year it became unavailable. For instance, if I call the following code: m<-map_data(?world?) The R returns to me: Error: cannot find function ?map_data? Kind regards, Poltoradnev Maxim Head of products promotion division PJSC

Dear R-helpers, I’m writing for advice on whether I should use R or a different package or language. I’ve looked through the R-help archives, some manuals, and some other sites as well, and I haven’t done too well finding relevant info, hence my question here. I’m working with hierarchical data (in SPSS lingo). That is, for each case (person) I read in three types of (medical) record: 1.

Hi all, Again I have searched the net and so on, without finding an answer to this surely simple problem. A short bit of code would be appreciated. I have a object named `data' with the following column headings. Date, maxitemp, minitemp, admissions, d.o.w. Where d.o.w. is day of the week, written "Sun" "Mon" etc. I just need to scale the Monday admissions by

New to this list. Running samba 2.2.4 set up as a PDC. We've recently added another department to our office network. Ideally, I don't want either department to see each others shares - just to be aware of the shares in their own workgroups. The documentation says that you can set up virtual servers using the "netbios aliases" and the "%L" options in the

Let's say you have a 256 Kbps Internet connection and you're using it for voice calls. With mu-law (G.711), each call uses about 80 kbps, so you really can't have more than 3 calls active at one time. Does Asterisk support any kind of Call Admission Control where it would prevent you from originating a call if it would exceed your Internet bandwidth? For example, in this case, ideally,

As most of you would have noticed, we have now had 3 CVE-nominated security issues for SWAT in the past couple of years. At the same time, while I know many of our users use SWAT, we just don't have anybody to maintain it inside the Samba Team. Kai has made a valiant effort to at least apply the XSS and CSRF guidelines when folks make security reports, but by his own admission he isn't a

On 16 December 2016 at 08:20, Duncan Murdoch wrote: | Perhaps the solution is to recommend that packages which export their | C-level entry points either guarantee them not to change or offer | (require?) version checks by user code. So dplyr should start out by | saying "I'm using Rcpp interface 0.12.8". If Rcpp has a new version | with a compatible interface, it replies

All, This is probably a bit more of a mac question, but here goes. (Admission: I posted this to ruby-talk as well....) I am trying to use rdoc -d to generate class diagrams on a mac running Tiger (OS X 10.4) for a rails app. I managed to get dot installed, but now am running into problems with dot looking for libraries that either do not exist or are apparently in the wrong place. I probably made

I have a function t.test.cluster for which R CMD check results in a documentation warning because its argument names don't match those of t( ). Is there a way around this error besides renaming the function? Will this disqualify a package from admission to CRAN? How did t.test avoid this warning? Thanks, Frank --- Frank E Harrell Jr Prof. of Biostatistics & Statistics

the data file has such structure: 1992 6245 49 . . 20 1 0 0 8.739536 0 . . . . . . . . "alabama" . 0 . 1993 7677 58 . . 15 1 0 0

Hey, By "through LDAP" I meant that our linux servers would look for the users using pam_ldap. Anyway, I was able to "fix" this by mapping gidNumber to gidNumber instead of primaryGroupID on nslcd.conf. $ id uid=10000(Guilherme) gid=10001(it) grupos=10001(it) On Fri, Aug 21, 2015 at 4:28 PM, Rowland Penny <rowlandpenny241155 at gmail.com > wrote: > On 21/08/15

Hi All, I have what is probably a 12 year old (or older) Compaq R3000 UPS plugged into a FreeBSD 8 system running NUT version 2.6.5 This UPS contains a total of 16 batteries in 2 banks of 8, each battery is 6 volts and the bank produces 50 volts. The UPS monitors battery voltage and the battery charger in the UPS works like this. For about 2 days it will apply a charge/float/topping

On Feb 19, 2014, at 12:50 PM, Ted Mittelstaedt wrote: > Worse, however, is if there's a power failure right near the end > of the 2-days-off cycle. That happened to me last week - it was a > short duration 15 second loss - and the upscode2 driver decided it needed to issue a forced shutdown. > > Very likely this was because upscode2 had decided the batteries > were

Hello all -- And a special greeting to those of you who were at RailsConf 2006 in Chicago. You know how great the event was, and how great the European Rails Conference is going to be in London in September! We''re now accepting proposals for talks at the European Rails Conference, to be held September 14-15 in London. Accepted speakers will get free admission to the conference.

Dear R-Listers, I am a Windows user (R 2.6.2) using the development version of sqldf to try to read a 3GB file originally stored in .sas7bdat-format. I convert it to comma-delimited ASCII format with StatTransfer before trying to import just the rows I need into R. The problem is that I get this error: > f <- file("hugedata.csv") > DF <- sqldf("select * from f where

On 16 December 2016 at 10:14, Duncan Murdoch wrote: | On 16/12/2016 8:37 AM, Dirk Eddelbuettel wrote: | > | > On 16 December 2016 at 08:20, Duncan Murdoch wrote: | > | Perhaps the solution is to recommend that packages which export their | > | C-level entry points either guarantee them not to change or offer | > | (require?) version checks by user code. So dplyr should start out by

Test =) soddsjbmshdwqwu -- Test, yep.