Hi, Ivan:
p.s. If you'd like to generate reports using LaTeX, I suggest you
also try "(LaTeX <- ???LaTeX)".
#######################
Are you trying to read standard text or csv files? If yes, then try
"?read.table" at a command prompt.
Or are you trying to connect directly from R to a database system? If
yes, which database system? This can be done from R, but as far as I
know, finding the functions and documentation on how to do this is not
trivial.
To look at this, I tried the following:
library(sos)
db <- ???database
This requires the "sos" package, which you can get from CRAN using
"install.packages('sos')", for example.
This command "???database" identified 892 help pages that matched the
search term "database". It returned a data.frame (like a matrix
allowing different classes of objects in different columns) of class
"findFn" (see ?findFn) of the 400 of these 892 with the strongest
matches to the search term.
summary(db)
This gave me a summary by package of these first 400 help pages. I've
found it useful to get all the matches, not merely the first 400, and
look at the summary of those:
db9 <- ???database(999)
summary(db9)
Package Count MaxScore TotalScore Date
1 seqinr 41 34 292 2009-11-26
2 emu 32 38 412 2009-11-26
3 RMySQL 23 57 217 2009-04-16
4 RPostgreSQL 23 54 178 2009-11-05
5 ROracle 22 54 158 2008-06-14
6 RSQLite 22 35 206 2010-02-13
7 maps 19 24 142 2010-02-13
8 DBI 18 42 177 2010-01-09
9 TRAMPR 17 26 114 2007-06-30
10 GO 17 4 68 2005-07-23
11 RODBC 14 31 160 2009-10-19
12 GRASS 13 25 39 2010-01-29
This tells you that there are packages RMySQL, RPostgreSQL, ROracle,
RSQLite, and RODBC, plus other packages whose names sound to me like
they might be less useful for this.
However, if you use a particular database, you might be wise looking
for that particular database, e.g., by "???Oracle". This just gave me
many more options not on the above list.
Hope this helps.
Spencer Graves
####################
Hi!
You should first go to the home page of the R project and read the
manuals available there (and there are a lot).
When you'll understand how R works, read the posting guide and ask
specific questions.
I don't think you'll get answers if you have such imprecise questions.
Ivan
Le 2/22/2010 14:07, Dr. David Kirkby a écrit :
chinna wrote:
hi everyone,
i am new to R project can anyone please help me by providing
documents....
my goal is using R i have to connect to the database and i have to
generate
reports.
Thanks in advance
chinna.
R is a complex program. If you can't work out how to find the
documentation, I doubt you will be able to use R.
Dave
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______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
______________________________________________
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.
