Please see example code below.
I have a vector ("mydata") of length 10. "mydata" can have various formats
(e.g. numeric, text, POSIXct, etc) I use the matrix and data.frame functions
to convert "mydata" to a dataframe ("mydf") of 2 columns and 5 rows.
What is a "good" way to ensure that the format is retained when I create the
data.frame?
Currently, data in the "POSIXct" format is converted to numeric.
Also, for my edification, is there a "good" way to convert numeric values
such as these back to the original "POSIXct" format/values?
Much thanks!
#here I lose the "POSIXct" formatting
mydata <- rep(Sys.time(), 10)
str(mydata)
mydf <- data.frame(matrix(data=mydata, nrow=5, ncol=2))
str(mydf)
#here using only "matrix" I also lose the "POSIXct" formatting
mydata <- rep(Sys.time(), 10)
str(mydata)
mydf <- matrix(data=mydata, nrow=5, ncol=2)
str(mydf)
#this works as intended
mydata <- rep(1:10)
str(mydata)
mydf <- data.frame(matrix(data=mydata, nrow=5, ncol=2))
str(mydf)
---------------------------------
[[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.
