The output from sessionInfo() the posting guide asked for would have been
very helpful here.
I think the problem is likely to be that these are not standard French
abbreviations according to my systems. On Linux I get
format(Sys.Date(), "%d-%b-%y")
[1] "31-jan-08"
format(Sys.Date()-50, "%d-%b-%y")
[1] "12-déc-07"
and on Windows
format(Sys.Date(), "%d-%b-%y")
[1] "31-janv.-08"
format(Sys.Date()-50, "%d-%b-%y")
[1] "12-déc.-07"
And yes, chron is US-centric and so only allows English names.
Assuming you know exactly what is meant by 'French short format', I think
the simplest thing to do is to set up a table by
tr <- month.abb
names(tr)[1] <- c("janv") # complete it
x <- "9-janv-08"
x2 <- strsplit(x, "-")
x3 <- sapply(x2, function(x) {x[2] <- tr[x[2]]; paste(x, collapse="-")})
as.Date(x3, format = "%d-%b-%y")
On Wed, 30 Jan 2008, Denis Chabot wrote:
Hello R users,
I have to import a file with one column containing dates written in
French short format, such as:
7-déc-07
11-déc-07
14-déc-07
18-déc-07
21-déc-07
24-déc-07
26-déc-07
28-déc-07
31-déc-07
2-janv-08
4-janv-08
7-janv-08
9-janv-08
11-janv-08
14-janv-08
16-janv-08
18-janv-08
There are other columns for other (numeric) variables in the data
file. In my read.csv2 statement, I indicate that the date column must
be imported "as.is" to keep it as character.
I would like to transform this into a date object in R. So far I've
used chron for my dates and times needs, but I am willing to change if
another object/package will ease the task of importing these dates.
My reading of the chron help led me to believe that the formats it
understands are only month names in English.
Are there other "formats" I can use with chron, or must I somehow edit
this character variables to replace French month names by English ones
(or numbers from 1 to 12)?
Thanks in advance,
Denis
p.s. I read this in digest mode, so I'll get your replies faster if
you cc to my email
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--
Brian D. Ripley, [EMAIL PROTECTED]
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