R and exchanges

| I sent a question to the general Help. I received an answer from Patrick
| Burns, and he suggested me to post it here. The question is how to use batch

Umm, why? Nothing finance-specific here.

| files that call R in an effective way. More:
| 
| What I need is to interact with other applications(a connection to
| exchanges, like Eurex, Liffe, CBOT and eventually to something like ESB in
| FX). So, if I get a price from the exchanges, I want that R makes a
| calculation. But to get R connected to the exchanges is complex, so what I
| have thought is to have an external program that connects to the exchanges,
| then gets the prices and saves them to a txt file, then R is opened, the txt
| file is read, the calculations are performed, and the results are saved into
| another txt file. Then, another application reads the new txt file and sends
| a message to the exchanges.
| 
| This is what I want to do.
| 
| Does anybody have some ideas about it?

Sure. Control R from another app. Python is popular, and there is RPy to
call/control R from Python. There is also, as I recall, a Perl package to do
something similar.

Or you just write everything in R as R has basic tcp/ip networking built in.

Dirk

Statistics: The (futile) attempt to offer certainty about uncertainty.
         -- Roger Koenker, 'Dictionary of Received Ideas of Statistics'