
1) quantmod, zoo, xts, TTR in no particular order, the first requires the others, so I can't really separate them.

2) There are plenty of packages for my needs (using R as a hobbyist), but my biggest concern is that they lack active support. A package for complex testing of trading strategies would be nice, but it's hard to come up with a good design.

Regards,

> Date: Tue, 2 Mar 2010 15:13:54 -0500
> From: ralf.bierig@gmail.com
> To: r-help@r-project.org
> Subject: [R] Three most useful R package
> 
> Hi R-fans,
> 
> I would like put out a question to all R users on this list and hope
> it will create some feedback and discussion.
> 
> 1) What are your 3 most useful R package? and
> 
> 2) What R package do you still miss and why do you think it would make
> a useful addition?
> 
> Pulling answers together for these questions will serve as a guide for
> new users and help people who just want to get a hint where to look
> first. Happy replying!
> 
> Best,
> Ralf
> 
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