MC
Durham, NC 27710
FAX 919-681-7494
From: Jason Stout, M.D.
Sent: Saturday, May 24, 2014 11:47 AM
To: David Winsemius
Cc: r-help@r-project.org
Subject: RE: [R] Conditional assignment of values to vector using ifelse
This is obviously an oversimplified way of simulating differen
.
Jason Stout, MD, MHS
Box 102359-DUMC
Durham, NC 27710
FAX 919-681-7494
From: David Winsemius [dwinsem...@comcast.net]
Sent: Saturday, May 24, 2014 11:35 AM
To: Jason Stout, M.D.
Cc: r-help@r-project.org
Subject: Re: [R] Conditional assignment of values to
On May 24, 2014, at 6:58 AM, Jason Stout, M.D. wrote:
> Hi R-users,
>
> I'm trying to simulate the outcome of several diagnostic tests with binary
> outcomes (positive/negative) and different performance characteristics. What
> I would like to generate is a dataframe with the first column rep
Hi R-users,
I'm trying to simulate the outcome of several diagnostic tests with binary
outcomes (positive/negative) and different performance characteristics. What I
would like to generate is a dataframe with the first column representing the
result of a "perfect" test, and different columns t
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