Hi
Is there any way of attaching the date and time of formation of an object
so that ls() can report such things in a manner similar to the Unix ls
command? And/or a comment attached? Could this be added to the
housekeeping wish-list?
I usually use my own little command lls() (below) that reminds me of the
mode and size of a structure since I often have R sesssions open for days
at a time. Addition of the date and time and a comment describing the
function or whatever would be a great aid to my poor memory and an
alternative to losing the piece of paper I have written the description
down on. Sorting by date/time would automatically group all objects
created at the same time together.
Presumably since S+ stores everything in .Data this can automatically be
arranged by system('ls -lrt .Data') for example, just about the only
advantage of overworking your disk other than error recovery that I can
think of. Assuming Unix of course.
Just a thought - along with the autosave when quiescent that I posted a
little while ago ...
John
lls<-function (pat = "")
{
lll <- ls(1, pat = pat)
for (i in 1:length(lll)) {
cat(formatC(eval(parse(t = paste("mode(", lll[i],
")"))),
1, 12), formatC(lll[i], 1, max(nchar(lll)) + 1),
eval(parse(t = paste("dimx(", lll[i], ")"))),
"\n")
}
}
where
dimx<-function (dd)
{
if (is.null(dim(dd))) {
length(dd)
}
else {
dim(dd)
}
}
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