Question about Rweb

Ted,

Hi Simon,

Any chance of getting step by instructions on setting it up to work with a
web server like Apache's httpd server (I have Apache's web server running,
actually a couple instances on different ports, and I do all my CGI
programming using Perl)?

The setup is really easy (it supports either CGI or PHP), but you're on the wrong platform :P see below.
I am not so much looking to provide a web interface for working with R, but
rather want to write CGI programs that use R for specific analyses and
graphics.  I was considering writing my R scripts as usual (using the
capabilities of QRMlib and RQuantLib, in particular), and have them invoked
by a cgi script written in perl.  But your description suggests it can be
made faster.  Each package I looked at for doing this was interesting, but I
always got stuck at the point of figuring out how to get Apache's httpd
server to run my R scripts.  Your description suggests that a request
requiring R can be just passed onto Rserve, but how does one set that up;
i.e. to pass the request arguments through to the R script, and to tell
Rserve which R script to use?

Any insights on setting this up would be appreciated.

On http://rforge.net/FastRWeb/files/, I read that FastRWeb is to be
installed using "install.packages('FastRWeb',,'http://www.rforge.net/')",
but that gives me the following message:

install.packages('FastRWeb',,'http://www.rforge.net/')
Installing package(s) into 'C:\Users\Ted\Documents/R/win-library/2.12'
(as 'lib' is unspecified)
Warning message:
In getDependencies(pkgs, dependencies, available, lib) :
 package 'FastRWeb' is not available

This was on:

R version 2.12.0 (2010-10-15)
Copyright (C) 2010 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: x86_64-pc-mingw32/x64 (64-bit)

Well, technically, you can run it on Windows, but I would not recommend it. Windows is a really bad server platform, especially with R (no fork, no parallel connections, no unix sockets ...).

The standard configuration in FastRWeb assumes a unix server (the more common case) and it really consists of install.packages() and then copying Rcgi from the cgi-bin directory of the installed FastRWeb package to your web server's cgi-bin and starting Rserve (via /var/FastRWeb/code/start). Alternatively, you can use the PHP client from Rserve instead of CGI.

If you really want to use Windows, I have fixed the Windows build so it should work, but you'll have to configure it by hand -- but as I said, I strongly discourage the use of Windows for any R-related server activities - there are too many security implications and it's far less efficient.

Cheers,
Simon
Thanks

Ted

-----Original Message-----
From: r-devel-bounces at r-project.org [mailto:r-devel-bounces at r-
project.org] On Behalf Of Simon Urbanek
Sent: October-05-11 3:06 PM
To: Tonidandel, Scott
Cc: r-devel at r-project.org
Subject: Re: [Rd] Question about Rweb

On Oct 5, 2011, at 2:16 PM, Tonidandel, Scott wrote:

Greetings,

I am working on creating an interactive website that will generate
R-code
[snip]
I may be biased, but I would recommend using FastRWeb, it's much more
efficient and has a lot of advantages (allows pre-loading of data and
code,
supports parallel connections etc.).

See
http://rforge.net/FastRWeb
and
https://www.urbanek.info/research/pub/urbanek-iasc08.pdf

We use it heavily internally for a lot of things we do, so it's definitely
a very
active project (in fact I know about several people using it externally as
well).
In case you get convinced that this is a good option, please feel free to
contact me if you have any questions and need any help.

Cheers,
Simon

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Question about Rweb

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