You are using this as intended, although your email message came in latin9
not latin1, which does not affect your examples. Have you actually
checked (e.g. via a hex dump) that the file is in latin1?
I assume that if you converted the file to UTF-8 you then used
read.table(R_data/hs+sfnet.T.060505.tbl4", header=TRUE)
If so, you need to investigate the locale in use, as which letters are
valid depends on the locale: on Linux UTF-8 locales all letters in all
languages are valid in R names, but that is not necessarily the MacOS
interpretation. (Invalid characters in names will be converted to ., and
if the locale is wrong so may be the interpretation of bytes as
characters.)
You might find more informed help on the r-sig-mac list.
On Thu, 8 Jun 2006, Antti Arppe wrote:
Dear colleages in R,
I have earlier been working with R in Linux, where reading in a table
containing Scandinavian letters ("ä", "ö", and "å") in the header as part of
variable names has not caused any problem whatsoever.
However, when trying to do the same in R running on new MacOS-X (with an
Intel processor) with the same original text table does not seem to work
whichever way I try. Following the recommendations on the R site and using
the 'file' function to set the encoding breaks down at the first encounter
with a Scandinavian character:
THINK <- read.table(file("R_data/hs+sfnet.T.060505.tbl4",
encoding="latin1"),header=TRUE)
Warning messages:
1: invalid input found on input connection 'R_data/hs+sfnet.T.060505.tbl4'
2: incomplete final line found by readTableHeader on
'R_data/hs+sfnet.T.060505.tbl4'
A sample exemplifying such characters as variable labels is below (for which
the behavior of R in Mac is the same as for the larger file referred to
above):.
ajatella miettiä pohtia
1 FALSE FALSE TRUE
2 FALSE FALSE FALSE
3 FALSE TRUE FALSE
4 FALSE TRUE FALSE
5 TRUE FALSE FALSE
6 TRUE FALSE FALSE
7 FALSE FALSE FALSE
8 FALSE TRUE FALSE
9 FALSE TRUE FALSE
10 FALSE FALSE FALSE
Converting the the file from ISO-latin-1 to UTF8 (with Mac's TextEdit
application)allows the file to be read in in its entirety, but still the
Scandinavian character in the heading is coerced to a period '.', or two, in
fact (i.e. 'miettiä' -> 'miett..')
Have I possibly misunderstood how the 'file' function should be used in
conjunction with 'read.table', or might the problem with latin1-to-utf
conversion be somewhere else?
Appreciating any help on this matter,
--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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