R help - Sep 2007 - orientlib

Hi All user,

I have been using R-2.5.1. dose orientlib support this version? I would like to
try. it.
I have been wondering how to install the library.

With regards,
abu
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On 9/28/2007 11:20 AM, Abu Naser wrote:
> Hi All user,
> 
> I have been using R-2.5.1. dose orientlib support this version? I would
like to try. it.
> I have been wondering how to install the library.
As far as I know it is fine.  You install it as you would install any 
other package, but that depends on what platform you're using.  If 
you're using Windows, the easiest way is to use the "Packages | Install
packages..." menu item.

Duncan Murdoch

Hi all users,

I want to calculate angles from two vector using quaternion. I believe , it is
possible using orientlib. Since
I am not an quaternion expart, I need assistance to make sure I am not doing
anything wrong. Could anyone please
expain it how to do it using orientlib.

With regards,
Abu

Hi Duncan,
Sorry, I forgot to mention. I meant (x1,y1,z1) and (x3,y3,z3).

With regards,
Abu

----------------------------------------> Date: Mon, 1 Oct 2007 10:48:12
-0400> From: murdoch at stats.uwo.ca> To: likhonnaser at hotmail.com>
CC: r-help at r-project.org> Subject: Re: [R] orientlib>> On 10/1/2007
9:44 AM, Abu Naser wrote:>> Hi Duncan,>>>> Thanks for your
replay.>> I am confused as I dont have the quaternion
backgorund.>>>> Let me explain what I am trying to do:>> I
have 3 coordinates in space (x1,y1,z1),(x2,y2,z2), and (x3,y3,z3) . Now, I use
(x1,y1,z1) and (x2,y2,z2) to define axis of rotaion. Then, I wanted to use 3rd
coordinate to calculate angle of rotation about that axis. Is it possible with
your orientlib?>> I think you need to be more specific about how the
rotation is defined.> Two points define a line in an obvious way, but how
does the third point> define an angle?>> Duncan Murdoch

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