Displaying 3 results from an estimated 3 matches for "rrawhist".
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2002 Apr 30
1
followup -- deficiencies in readline capability
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> debug(history)
> debug(savehistory)
> history()
debugging in: history()
debug: {
file1 <- tempfile("Rrawhist")
savehistory(file1)
rawhist <- scan(file1, what = "", quiet = TRUE, sep = "\n")
unlink(file1)
nlines <- length(rawhist)
inds <- max(1, nlines - max.show):nlines
if (reverse)
inds <- rev(inds)
file2 <- tempfile("hist&...
2006 Apr 11
1
pattern in history
...so I modified the utils::history function for that purpose. I
found it useful.
I append the code ( I only added the two lines with #**)
Romain.
history2 <-
function (pattern="", max.show = 25, reverse = FALSE, unique =
pattern!="", ...)
{
file1 <- tempfile("Rrawhist")
savehistory(file1)
rawhist <- scan(file1, what = "", quiet = TRUE, sep = "\n")
rawhist <- rawhist[grep(pattern, rawhist, ...)] #**
if(unique) rawhist <- unique(rawhist) #**
unlink(file1)
nlines <- length(rawhist)
inds <- max(...
2004 Nov 08
1
can one evaluate an expression in a comment? (or insert resultsinto history?)
But that doesn't put the result into the history buffer, to be written
to a file only later when I savehistory(filename).
Bert Gunter also suggested ?capture.output and ?textConnection,
but I cannot see how to get text into the history buffer as comments,
but with evaluated expressions (values).
I know how to use paste, sink, write, etc. but nothing that I can see
inserts into the history