Hi all,

Last week I emailed a teaser about R-Node, a project I've been working on in
my spare time with Protovis, R and nodejs (read my original post here:
http://groups.google.com/group/protovis/browse_thread/thread/13633e3a...
).

I know how annoying it is to not be able to try these things out, so I've
put R-Node on a server so you can!

visit: http://69.164.204.238:2904/

Access is with (the backend is secure, this is just extra):

pvdemouser
svL35NmPwMnt

Once in, you can try out R. If you have never used R before, try typing into
the text box the following  commands (press enter after each one):

x <- rnorm(100)
plot(x, main="Random numbers")
l <- lowess(x)
lines (l$y)

The plot and lines commands will bring up a graph - you can escape out of
it. You can also download the graph as a SVG file.

You can also change the graph type, e.g. do:

plot (x, type="o")

(for example)

Many R commands will work, though only the hist(), plot() and lines() work
for graphing. There is limited error checking at the moment I'm afraid.

The code continues to be improved and developed. You can download it from:

http://gitorious.org/r-node

One small request - please don't type the R command q() - it will quit the
server, stopping it working for everyone! - also, as everyone shares the
same session for now, using more unique variable name than 'x' and 'l' will
help you.

I am very interested in how you may imagine yourself using something like
this - so if you do have any ideas on what you'd like to see, feel free to
email me.

Jamie

Ok,

Last post about this until I do something else interesting with protovis -

R-Node now has it's own website:

http://www.squirelove.net/r-node/

and it's own mailing list:

r-node-users@googlegroups.com

and the demo site needs no password access.

Happy graphing,
Jamie