On 11/9/2014 3:05 AM, Muhuri, Pradip (SAMHSA/CBHSQ) wrote:
Hi Dan,
Thank you so much for sending me your code that provides me desired results.
But, I don't understand why I am getting the follow warning message, In
FUN(newX[, i], ...) : no non-missing arguments, returning NA. Any thoughts?
Regards,
Pradip
data2x <- within(data1, oidflag <- apply(data1[,-1], 1, max, na.rm=TRUE))
Warning message:
In FUN(newX[, i], ...) : no non-missing arguments, returning NA
data2x
id mrjdate cocdate inhdate haldate oidflag
1 1 2004-11-04 2008-07-18 2005-07-07 2007-11-07 2008-07-18
2 2 <NA> <NA> <NA> <NA> <NA>
3 3 2009-10-24 <NA> 2011-10-13 <NA> 2011-10-13
4 4 2007-10-10 <NA> <NA> <NA> 2007-10-10
5 5 2006-09-01 2005-08-10 <NA> <NA> 2006-09-01
6 6 2007-09-04 2011-10-05 <NA> <NA> 2011-10-05
7 7 2005-10-25 <NA> <NA> 2011-11-04 2011-11-04
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: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Daniel Nordlund
Sent: Sunday, November 09, 2014 5:33 AM
To: r-help@r-project.org
Subject: Re: [R] Getting the most recent dates in a new column from dates in
four columns using the dplyr package (mutate verb)
On 11/8/2014 8:40 PM, Muhuri, Pradip (SAMHSA/CBHSQ) wrote:
Hello,
The example data frame in the reproducible code below has 5 columns (1 column
for id and 4 columns for dates), and there are 7 observations. I would like to
insert the most recent date from those 4 date columns into a new column
(oiddate) using the mutate() function in the dplyr package. I am getting
correct results (NA in the new column) if a given row has all NA's in the four
columns. However, the issue is that the date value inserted into the new
column (oidflag) is incorrect for 5 of the remaining 6 rows (with a non-NA
value in at least 1 of the four columns).
I would appreciate receiving your help toward resolving the issue. Please see
the R console and the R script (reproducible example)below.
Thanks in advance.
Pradip
###### from the console ########
print (data2)
id mrjdate cocdate inhdate haldate oidflag
1 1 2004-11-04 2008-07-18 2005-07-07 2007-11-07 2011-11-04
2 2 <NA> <NA> <NA> <NA> <NA>
3 3 2009-10-24 <NA> 2011-10-13 <NA> 2011-11-04
4 4 2007-10-10 <NA> <NA> <NA> 2011-11-04
5 5 2006-09-01 2005-08-10 <NA> <NA> 2011-11-04
6 6 2007-09-04 2011-10-05 <NA> <NA> 2011-11-04
7 7 2005-10-25 <NA> <NA> 2011-11-04 2011-11-04
################## Reproducible code and data
#####################################
library(dplyr)
library(lubridate)
library(zoo)
# data object - description of the
temp <- "id mrjdate cocdate inhdate haldate
1 2004-11-04 2008-07-18 2005-07-07 2007-11-07
2 NA NA NA NA
3 2009-10-24 NA 2011-10-13 NA
4 2007-10-10 NA NA NA
5 2006-09-01 2005-08-10 NA NA
6 2007-09-04 2011-10-05 NA NA
7 2005-10-25 NA NA 2011-11-04"
# read the data object
data1 <- read.table(textConnection(temp),
colClasses=c("character", "Date", "Date", "Date",
"Date"),
header=TRUE, as.is=TRUE
)
# create a new column
data2 <- mutate(data1,
oidflag= ifelse(is.na(mrjdate) & is.na(cocdate) &
is.na(inhdate) & is.na(haldate), NA,
max(mrjdate, cocdate, inhdate,
haldate,na.rm=TRUE )
)
)
# convert to date
data2$oidflag = as.Date(data2$oidflag, origin="1970-01-01")
# print records
print (data2)
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.
I am not familiar with the mutate() function from dplyr, but you can get your
wanted results as follows:
data2 <- within(data1, oidflag <- apply(data1[,-1], 1, max, na.rm=TRUE))
Hope this is helpful,
Dan
Daniel Nordlund
Bothell, WA USA
______________________________________________
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.
It means what it says. In this case, for id=2 there are no non-missing
values. Since, na.rm was set to true, it is just warning you that since
there was nothing left to get the max of, it is returning NA.
Dan
--
Daniel Nordlund
Bothell, WA USA
______________________________________________
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.
