similar to: Complex sampling?

R experts, I need to sample two rows without replacement from the following data frame such that neither row contains the same 'DOW'. For example, I cannot select both a Monday morning and a Monday afternoon. I am using STRATA_NUM as an index to randomly select rows from, since this variable indexes all unique permutations of DOW, SITE, and TOD. I know how to use the sample function

R users, I have been trying to write a program in R that will extract rows from a data frame and combine the rows into a new smaller data frame while meeting several criteria. I would greatly appreciate any advice that could help me get started down the right path. What I want to do is to extract two rows WEEK (26 weeks total) from the data frame by sampling without replacement from the

I've searched the Web with Google and do not find what might cause this particular error from an invocation of cenboxplot: cenboxplot(cu.t$quant, cu.t$ceneq1, cu.t$era, range=1.5, main='Total Recoverable Copper', ylab='Concentration (mg/L)', xlab='Time Period') Error in if (n > 0) (1L:n - a)/(n + 1 - 2 * a) else numeric() : argument is of length zero I do

Hello everyone, My progress has stalled on finding a way of creating a somewhat complicated variable to add to my existing dataframe and I am hoping one of you could help me out. The dataframe below contains only a fraction of the data of my complete dataframe, but all of the variables. What I want to do is add another variable named 'WEEK' to this dataframe that is assigned 1 for row 1

Release Announcements --------------------- This is the latest stable release of the Samba 4.16 release series. Changes since 4.16.2 -------------------- o? Jeremy Allison <jra at samba.org> ?? * BUG 15099: Using vfs_streams_xattr and deleting a file causes a panic. o? Douglas Bagnall <douglas.bagnall at catalyst.net.nz> ?? * BUG 14986: Add support for bind 9.18. ?? * BUG

Release Announcements --------------------- This is the latest stable release of the Samba 4.16 release series. Changes since 4.16.2 -------------------- o? Jeremy Allison <jra at samba.org> ?? * BUG 15099: Using vfs_streams_xattr and deleting a file causes a panic. o? Douglas Bagnall <douglas.bagnall at catalyst.net.nz> ?? * BUG 14986: Add support for bind 9.18. ?? * BUG

I have a matrix which I wanted to convert to a data frame. As I could not succeed and resorted to export to csv and reimport it again. Why did I fail in the attempt and how can I achieve what I wanted without this roundabouts? The original matrix: > str(comb_model0) num [1:90, 1:4] 3.5938 0.0274 0.0342 0.0135 0.0207 ... - attr(*, "dimnames")=List of 2 ..$ : chr [1:90]

Hi everyone, I am at my wits end with what I believe would be considered simple by a more experienced R user. I want to know how to add a variable to a dataframe whose values?are conditional?on the values of an existing?variable.?I can't seem to make an ifelse statement work?for my situation.?The existing variable?in my dataframe is?a character variable named DOW which contains abbreviated

I have the following xts objetct "temp" > str(temp) An ?xts? object from 2010-12-26 to 2011-03-05 containing: Data: num [1:70, 1] 2.95 0.852 -0.139 1.347 2.485 ... - attr(*, "dimnames")=List of 2 ..$ : NULL ..$ : chr "t_n" Indexed by objects of class: [POSIXct,POSIXt] TZ: GMT xts Attributes: NULL > temp t_n 2010-12-26

I have a user John Dow on a local machine johnsmachine. I have a samba user jdow. When I moved the profile john dow to the domain keydomain, I can't get the install program to run. This is how it looks. I have local profile johnsmachine/John Dow and roaming profile keydomain/jdow. When logged into profile johnsmachine/John Dow, I can install and uninstall the palm software with no

Hi All. I have a mysql statement that I would really really like to call from my Ruby program which goes like this: SELECT a, b, DAYOFWEEK(date_time) as DOW, HOUR(date_time) at hr, AVG(x/y) FROM records; This is possible by creating a 3-dimentional array of a, b, date_time containing x/y, and then finding averages and putting it into a 4-dimensional array of a, b, dow,

Just made FreeBSD 8.1 portupgrade to new Dovecot version 1.2.16 from 1.2.14_1. In message log I has many records such this > Jan 4 23:30:11 beta kernel: pid 15096 (dovecot-auth), uid 0: exited on s >> ignal 11 (core dumped) > > Jan 4 23:30:11 beta kernel: pid 15097 (dovecot-auth), uid 0: exited on s >> ignal 11 (core dumped) > > Jan 4 23:30:11 beta kernel: pid 15098

I was wondering if anyone has been able to get DoW Soulstorm Running on their Wine. I've looked at several forum lines, and no one seems to have been able to crack it yet. From what i've gathered, the reason it wont work is because of the cd check. If i were able to crack the game so it didnt check for the cd, would it work then? I'm very new to Linux, so please post any replies with a

Given dayOfWeekName<-c("Mon","Tue","Wed","Thu","Fri","Sat","Sun"); dayOfWeekOrdinal<-c(1,2,3,4,5,6,0); dayOfWeekWorkDay<-c(TRUE,TRUE,TRUE,TRUE,TRUE,FALSE,FALSE); weekProfile<-list(dow=dayOfWeekName,dowI=dayOfWeekOrdinal,dowW=dayOfWeekWorkDay) 1. How can I conditionally get dow, dowI, and dowW from weekProfile?

Hi all, This is crazy but I can't see the answer.? In my system crontab I've added a job to stop the music system at 10:59 on the 11th November, and restart it at 11:02 on the 11th November # m??? h??? dom??? mon? dow??? user??? command ? 59? 10???? *???? 11??? *???? root???? /bin/squeezy -all -off >>/var/log/newplaylist 2>&1 ? 02? 11???? *???? 11??? *???? root????

I have a user defined list of items. Using the sortable_element function, I can manipulate the ordering of this list fine by dragging each component around. When I dynamically add another <li> item to this list, the newly added item is _not_ "draggable" like its other siblings. Using the sortable_element function, how do I make it aware of newly added list items? Here is my

head, tail and fix commands don't really work well if I have large matrix/array for which I would like to be able to scroll up and dow, left and right ... Could anybody please help me? Thanks [[alternative HTML version deleted]]

I need to merge three datasets and don't know how. If I were using SQL, I would use df3, look up the characteristics of each date in df1 and the value for each observation in df2. df1 - unique list of Dates and characteristics of those dates Date, YYYYMM, YYYYWW, DOW df2 - the raw data Date, Place, Value df3 - all posibile combinations of Date + Place (via

Hi all, The following code snippet isn''t working terribly well for me. I can get the Bias, StandardName and DaylightName, but everything else is goofed up. The alignment seems ok, but maybe I''ve missed something or maybe I have to do extra work to unpack the SYSTEMTIME structures. require ''windows/time'' include Windows::Time buf = 0.chr * 172 #

I have a zooreg object and I want to be able to generate a value for seasons and 11-day composites paste it onto my zoo data frame, along with year, month and days. Right now I have the following to work from: eg. dat.zoo.mdy <- with(month.day.year(time(dat.zoo)), cbind(dat.zoo, year, month, day, quarter = (month - 1) %/% 3 + 1, dow = as.numeric(format(time(dat.zoo), "%w")))) For