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Hey guys!
This is part 4 of "introduction to R"
and in this part, we will see how to get into
the website of R,
which is free.
We have to go to
www.r-project.org
and you have to write like
r-project.org
hit enter, yup!
This might look a bit small, ok ...
I am using mozilla,
and pressing ctrl ++ to make it large
so that you can see it conveniently
So, if you want to download R,
go to CRAN under Download,
and
there are lots of mirror,
just go whichever mirror is close to you,
and then
download for, say, whatever system you want to use,
and the base package,
and
this is the thing that you sould be downloading
and save as,
wherever you want to save,
may be in desktop.
Yup!
So, you are downloading R.
Yea, I have downloaded it already,
so, I need to cancel it,
but this is how you download.
So, if you want to download the packages,
you can go to
windows > contrib
and here are the packages
but the packages are for several versions,
and the version that we have been downloading, it was 2.6,
so we will go to the package for 2.6
and here are the packages for R 2.6
Lots of package
however you want to download
you can download in the local files,
like this and go to R,
then packages > packages installed from local zip files
Then from the local zip files, wherever you have downloaded it, we can install the package
or, you can set
CRAN mirror at first,
say, I am setting it as Canada,
then
once you have set the mirror,
then > install packages
like, it is going to install packages right now
like, whatever package you want to install, just select it
or if you want to install it all,
then
select the first one, presee shift and the last one
and OK, then it will install everything! Yea - I just don't want to intall everything.
I think its a very good idea to install whatever you need, not the whole thing.
So, yeah - this is how we install the packages.
In R site, this is a very good source of help.
and you can get all sort of documents,
for example: for documents, search for the manuals,
whatever manuals they have there,
and you see,
"An introduction to R"
this is the best book ever I have read
for the introductory R
and you can browse
the HTML's, see the contents,
and go wherever you want,
or you could dowload the pdfs,
and see what is in the pdfs,
yeah this is the pdf, just in case you want
to download the whole book
and print it and read it that way.
And, also there is a FAQ.
You can go to R FAQ,
to know
what sort of problems we usually have,
amd what you need to know
and these sort of stuffs.
so in
R
webpage
you can get a lot of documentation,
and
also
not to mention the
contributed documants as well.
Like, if you want to see the English contributed documents,
there are lot of documents for
graphics,
"Simple R" - yea - this is a good one,
and a lot of good books are there
to read
and these are very very helpful
for various sort of audience.
You can just know nothing
and go through these books
and you will know
everything there is to be known.
"R for beginners" - these are all good books.
You can go through these books and
you get to know a lot of thing about R.
Not only in introductory R,
also they cover some of the advanced topics.
if you just
go to the
documents contributed,
you will
get these sort of help.
and if you want to post
some of your views,
or your problems,
you can
try to go to
their site,
where
you can
interact with the R community
So suppose
you want to email
them
about some particular issue
you want to discuss
with the R community
just go to
R project
and then
go to mailing list
and
this are different sort of R mailing lists
you might want to go to "R help"
and before posting any emails in "R help"
go to posting guide,
read it thoroughly,
and once you are done with it,
go back and see the web interface,
where all the help files are there,
and
yeah - we have read the general instructions,
so, we should go to the R help archieve,
yea - this is the help archive
for every day
so by date, you can see all the messages that are being posted in R
and go back,
and there is a full R site
that is
searchable
yeah you can search whatever you need
and you might just
get lucky to find it.
Suppose you want to find something about
"moments"
in some package,
yeah - and it will show you the
mails that were related to
moments
and you could just go through them
whether that
solves your problem or not.
yeah I think it is a very good idea to through the
mailing list at first
before you post anything,
and you search whatever your question is, and if you don;t get anything related to that
then read the posting guide
and email
the R community.
yeah - they are very very helpful,
most of the good guys are there :)
So, this is about it - the part 5!