Message-ID: <862D06FE-6DE2-4863-A59C-CC9CC348849D@comcast.net>
Date: 2013-01-08T21:31:02Z
From: David Winsemius
Subject: Integration in R
In-Reply-To: <EED0EA93-EB5F-47DD-B80D-256C65BBE8BC@xs4all.nl>
On Jan 8, 2013, at 1:07 PM, Berend Hasselman wrote:
>
> On 08-01-2013, at 22:00, Berend Hasselman <bhh at xs4all.nl> wrote:
>
>> ?...
>> David implemented the condition by multiplying by x[1]<x[2] which
>> in a numeric context is 0 when x[1]<x[2] en 1 when x[1]>=x[2].
>
> OOPS!! Reverse the 0 and the 1 in that sentence (TRUE becomes 1 and
> FALSE becomes 0)
I didn't worry about which direction was used for the inequality in
this case because of consideration of symmetry. (Thinking about it
now, I still think I managed to choose the correct direction.)
Obviously such a cavalier attitude should not be carried over to the
general situation.
--
David Winsemius, MD
Alameda, CA, USA