On May 22, 2011, at 2:11 AM, Jeroen Ooms wrote:
I need to convert a dataframe to a record-structure, to be able to
encode it
later in JSON. Suppose this is the data:
mydata <- data.frame(foo=1:3, bar=c("M","M","F"));
I would like to convert this to a unnamed list (json array) of key-
value
pairs. For example like this:
apply(data.frame(foo=1:3, bar=c("M","M","F")),1,as.list)
However, when I do this, all the numeric values are converted to
strings. I
don't understand why this is, because when I try to convert one record
simulataniously, this does not happen:
as.list(mydata[1,]);
I am not sure if this is indended behaviour or not, but is there an
elegant
way to apply 'as.list' to all of the dataframe rows without coercing
everything to strings?
?pairlist
pairlist( letters[1:3], 1:3)
pairlist(mydata$bar, ydata$foo) # assuming the numbers were values
for letter names.
--
David Winsemius, MD
West Hartford, CT
______________________________________________
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.
