Hi Dan,
I worked on a R emulation of Tradestation a couple of months ago.
The main idea is to bring statistical modeling near to technical analysis as much as possible, not just an open source version of a stock trading software. The discovery of Python (wxPython and RPy-Project specifically) let me redefine my plans for the GUI to put on it.
The R functions I built regard:
 - technical indicators
 - trading strategies (testing,...)
 - portfolio management (download quotes,...)
 - Charting (bars,candles,... but not interactive)
All (data,strategies,...) are stored in a MySql database.

I think I will restart working on it in the next months, depending on spare-time left to me by other projects I'm working on. I will put it on sourceforge or something similar, if you wish I'll send you a message.
I attach a sample-chart.
Cheers, Paolo








On Sun, 17 Sep 2006 23:42:55 +0200, Darren Weber <[EMAIL PROTECTED]> wrote:

---------- Forwarded message ----------
From: Darren Weber <[EMAIL PROTECTED]>
Date: Sep 17, 2006 2:37 PM
Subject: currency or stock trading strategy
To: R-help@stat.math.ethz.ch


Hi,

are there any good charting and analysis tools for use with
currencies, stocks, etc. in R?  I have some tools to download currency
data from the NYFRB using python and XML.  Can we get and parse an XML
download using R?  Can we have interaction in R plots?  Does anyone
use R for back-testing trading strategies?  Are there any forums for
discussion of using R for this specific purpose (apart from this
general list)?  Is anyone aware of any general open-source
developments for these purposes (I don't see any from GNU or google
searches)?

Take care, Darren

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Attachment: RTrade.png
Description: PNG image

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