[R-SIG-Finance] Parma Package QP optimization Failing and Ignoring Leverage Constraint

[Michael Weylandt]

On Sep 30, 2013, at 17:52, Preston Li <preston.li at gmail.com> wrote:

> if (!is.loaded('etfdata')) data(etfdata)

Totally off topic: that doesn't do what you think it does. You're looking for exists()

M