similar to: Oh apply functions, how you confuse me

Hello, I do not understand the correct way to approach the following problem in R. I have observations of pairs of variables, v1, o1, v2, o2, etc, observed every 30 seconds. What I would like to do is compute the correlation matrix, but not for all my data, just for, say 5 minutes or 1 hour chunks. In sql, what I would say is select id, date_trunc('hour'::text, ts) as tshour,

Hi, I need help :o( I want that my function saves result files in a for()-loop while it runs automatically. the filenames must be saved like: file_1 -> for 1. result file_2 -> for 2. result file_3 -> for 3. result and . . . file_n -> for n. result the file names are the same identified by _1, _2

Hello, I have a question regarding the use of Mocha with rSpec to spec one of my methods. My spec contains the following vehical1 = mock() vehical2 = mock() vehical1.stubs(:mph).returns(150) vehical2.stubs(:mph).returns(250) comparer.add_vehical([@vehical1, @vehical2]) comparer.sort_by(:mph) The comparer is an object that has a basic "stack like" functionality, add_vehical is the

http://www.srh.noaa.gov/fwd/productviewnation.php?pil=OKXZFPOKX&version= 0 can anyone suggest how I could set up asterisk@home to read out allowed the following text when I dial extension 850? 815 PM EST WED FEB 16 2005 .OVERNIGHT...MOSTLY CLEAR. LOWS 30 TO 35. NORTHWEST WINDS 15 TO 20 MPH WITH GUSTS UP TO 30 MPH...DIMINISHING TO 10 TO 15 MPH LATE. .THURSDAY...PARTLY CLOUDY. COOLER

Dear all- I have a dataset (see a sample below - but the whole dataset is June 2005 - June 2008). The "LST" format is "YYMMDDHHmm" and I would like to get the hourly average of the "mph" for the summer months (spanning all years). I have been trying to use "aggregate" but am not having much success at all! any thoughts would be greatly appreciated.

Hi I have a linux mdk 8.0 w/ custom 2.4.19-16 kernel, acls, quotas etc I have a samba 2.2.7 serving several shares on LVs everything's fine but with one share : whenever a windows client accesses this share his file manager is locked out for exactly one minute. this happens when the client requests the directory listing (or when an automatic refresh takes place) i can't see any reason

Sorry, the use of rows/columns I found so far was rather contradictive, both refering to what can be gotten via subset() instead of what I'm looking for. Is there a way to get multiple colums/rows? Something like corpus.df${mph,mgl,eng} Thanks in advance for any answers. -- Joel Prokopchuk

My data (slength) look like this: Plant Block Treat Genotype Source MPH 1 1 1 w 05-AZM sp 160 NA 2 2 1 w 12-50 463 NA 3 3 1 w 12-51 sp 150 0.0508982 4 5 1 w 29-42 567 0.9017094 5 6 1 w KNG-KNG 811 NA 6 7 1 w 02-02 1 NA Treat column

Dear All- I am trying to merge two data files - they have different date formats and different times zones. I need to match up the date/time of the datasets and then invoke a conditional statement, such as: if dataC$mph is >= 12 then keep dataM$co23 for the corresponding time/date stamp. snippets of data files: *dataC.txt* LST in mph Deg DegF DegF2 % volts Deg

hi i was involved in a webcast for the UK Make Poverty History event on July 2nd and have analyzed my Icecast logs using Sawmill (http://www.sawmill.net/) which supports Icecast logs: http://www.sawmill.net/formats/ice_cast.html looking at the data below i have been asked what the difference is between 'Page Views' and 'Visitors' with regard to Icecast logs: Page Hits Page

Hi All, I am using DNAcopy package in R for copy number analysis of 500K chip. The final output which I get from DNA copy is too big to be printed in a file. So I am getting an error as "reached getOption("max.print") -- omitted 475569 rows " Can somebody please provide me the pointers with how to increase the limit for max.print . Thanks, Pooja DISCLAIMER\

Greetings! I'm having an issue with the windrose produced by the windrose function from the circular package. For our weather stations in North Carolina I'm helping with a script which takes hourly wind speed and direction data to create windroses for our end users. One of the stations in the mountains frequently reaches wind speed of 40 to 60 mph and in storms can reach wind speed over

Hello , My optmatch package is loaded on R and otherwise running fine. I get an error after lcds successfully completes a logistic regression and I then try to obtain a propensity score: pdist <- pscore.dist(lcds) Error: could not find function "pscore.dist" Does anyone know if pscore.dist is part of the optmatch package, or is it contained in another package that I need to

Can someone help me with performing leave-out-one cross validation using R (model built is a Cox model)? Thanks. --------------------------------------------- David Verbel, MPH Senior Biostatistician Aureon Biosciences 28 Wells Avenue Yonkers, NY 10701 Phone: (914) 377-4021 Fax: (914) 377-4001 --------------------------------------------- [[alternative HTML version deleted]]

Hi all, I would like to combine elements of a vector: vec <- c("astring", "b", "cstring", "d", "e") > vec [1] "astring" "b" "cstring" "d" "e" such that for every element that contains "string" at the end, it is combined with the next element, so that I get this:

Hi R-masters I need help to make modified cumulative hazard ratio plot. I need create a common plot but with the number of subjects in risk each ticks times for two different groups in bottom of plot (I put one example in attach). Do you know a routine for this? Is possible create a routine for this? In this case with how commands? Thanks in advance! -- Bernardo Rangel Tura, M.D,MPH,Ph.D

Hello!!! I'm trying to do multiple ANOVA tests with R (testing the affect off different factors on the same response). As a result I get many ANOVA tables, and I want to extract a list of the "Pr(>F)" from all the tables. Maybe someone have an idea how to do this? Thanks Imri -- View this message in context:

Hello, assume I have an "unstructured" text line from a connection. Unfortunately, it is in string format: R> x [1] "\talpha0\t-0.638\t0.4043\t0.4043\t-2.215\t-0.5765\t-0.137\t501\t2000" How can I extract the data included in this string object "x" in order to get the elements for the parameter vector called "alpha0", i.e. -0.638 0.4043 0.0467

I want to run a R program, prog.R, interactively. My question is, is there a way I can start prog.R on the shell terminal when invoking R, instead of using source() inside R? TIA, Gang

I am interested in a model diagnostic for logistic regression which is normally distributed (much like the residuals in linear regression with are ~ N(0,variance unknown). My understanding is that most (all?) of the residuals returned by residuals.lrm {design} either don't have a well defined distribution or are distributed as Chi-Square. Have I overlooked a residual measure or would it be