Hi Boris, Sorry for not being explicit when replying to your first email. I wanted to say it does not work when row-binding. I want the following output. Thanks, Pradip
1 1 3 2 2 4 Total 7 ################### Below is the console ########## > test <- data.frame(first=c(1,2), second=c(3,4)) > test first second 1 1 3 2 2 4 > > sum(test$second) [1] 7 > > rbind(test, sum(test$second)) first second 1 1 3 2 2 4 3 7 7 Pradip K. Muhuri, PhD SAMHSA/CBHSQ 1 Choke Cherry Road, Room 2-1071 Rockville, MD 20857 Tel: 240-276-1070 Fax: 240-276-1260 -----Original Message----- From: Boris Steipe [mailto:boris.ste...@utoronto.ca] Sent: Sunday, November 30, 2014 5:51 PM To: Muhuri, Pradip (SAMHSA/CBHSQ) Cc: r-help@r-project.org Subject: Re: [R] R dplyr solution vs. Base R solution for the slect column total No it doesn't ... consider: test <- data.frame(first=c(1,2), second=c(3,4)) test first second 1 1 3 2 2 4 sum(test$second) [1] 7 On Nov 30, 2014, at 3:48 PM, Muhuri, Pradip (SAMHSA/CBHSQ) <pradip.muh...@samhsa.hhs.gov> wrote: > Hi Boris, > > That gives me the total for each of the 6 columns of the data frame. I want > the column sum just for the last column. > > Thanks, > > Pradip Muhuri > > > > -----Original Message----- > From: Boris Steipe [mailto:boris.ste...@utoronto.ca] > Sent: Sunday, November 30, 2014 12:50 PM > To: Muhuri, Pradip (SAMHSA/CBHSQ) > Cc: r-help@r-project.org > Subject: Re: [R] R dplyr solution vs. Base R solution for the slect > column total > > try: > > sum(test$count) > > > B. > > > On Nov 30, 2014, at 12:01 PM, Muhuri, Pradip (SAMHSA/CBHSQ) > <pradip.muh...@samhsa.hhs.gov> wrote: > >> Hello, >> >> I am looking for a dplyr or base R solution for the column total - JUST FOR >> THE LAST COLUMN in the example below. The following code works, giving me >> the total for each column - This is not exactly what I want. >> rbind(test, colSums(test)) >> >> I only want the total for the very last column. I am struggling with >> this part of the code: rbind(test, c("Total", colSums(test, ...))) I have >> searched for a solution on Stack Oveflow. I found some mutate() code for >> the cumsum but no luck for the select column total. Is there a dplyr >> solution for the select column total? >> >> Any hints will be appreciated. >> >> Thanks, >> >> Pradip Muhuri >> >> >> ####### The following is from the console - the R script with reproducible >> example is also appended. >> >> >> mrjflag cocflag inhflag halflag oidflag count >> 1 0 0 0 0 0 256 >> 2 0 0 0 1 1 256 >> 3 0 0 1 0 1 256 >> 4 0 0 1 1 1 256 >> 5 0 1 0 0 1 256 >> 6 0 1 0 1 1 256 >> 7 0 1 1 0 1 256 >> 8 0 1 1 1 1 256 >> 9 1 0 0 0 1 256 >> 10 1 0 0 1 1 256 >> 11 1 0 1 0 1 256 >> 12 1 0 1 1 1 256 >> 13 1 1 0 0 1 256 >> 14 1 1 0 1 1 256 >> 15 1 1 1 0 1 256 >> 16 1 1 1 1 1 256 >> 17 8 8 8 8 15 4096 >> >> >> >> ####################### below is the reproducible example >> ######################## >> library(dplyr) >> # generate data >> dlist <- rep( list( 0:1 ), 4 ) >> data <- do.call(expand.grid, drbind) >> data$id <- 1:nrow(data) >> names(data) <- c('mrjflag', 'cocflag', 'inhflag', 'halflag') >> >> >> # mutate a column and then sumamrize >> test <- data %>% >> mutate(oidflag= ifelse(mrjflag==1 | cocflag==1 | inhflag==1 | >> halflag==1, 1, 0)) %>% >> group_by(mrjflag,cocflag, inhflag, halflag, oidflag) %>% >> summarise(count=n()) %>% >> arrange(mrjflag,cocflag, inhflag, halflag, oidflag) >> >> >> # This works, giving me the total for each column - This is not what I >> exactly want. >> rbind(test, colSums(test)) >> >> # I only want the total for the very last column rbind(test, >> c("Total", colSums(test, ...))) >> >> Pradip K. Muhuri, PhD >> SAMHSA/CBHSQ >> 1 Choke Cherry Road, Room 2-1071 >> Rockville, MD 20857 >> Tel: 240-276-1070 >> Fax: 240-276-1260 >> >> >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> R-help@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide >> http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. > ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
