Newbie with some teething problems Quaternion package = where?

Questions
1

Brand new user of Home edition 10.3. I’m trying to use quaternions and when I type in <<Quaternions to load the package as stated in the “Quaternion Package” documentation - it complains that it can’t find the package. Where is it and how do I get it? Thanks!

2

Try this code below. Paste it in a notebook. It has the “backquote” after Quaternions.

<< Quaternions`
3

Thanks - even when I put the “backquote” in it failed, I also tried the double quote and the Needs[]. No luck.

4

Strange. What if you try another package, that should come with the Mathematica installation ?

<< Splines`

This is equivalent to:

Needs["Splines`"]
5

Ah,…this worked. When I tried the quote from the keyboard, apparently the representation was wrong, however when I cut and pasted from your reply - (as you said :-)) it worked. Thanks!

6

Good. Now when this is cleared up:
I attach a homebrewed quaternion package. It has a slightly different approach from the package included in the MMA installation

<< quaternionsHM`

quat.png
quat.png537×335 6.58 KB

7

I forgot to mention where the homebrew should be placed. So that Mathematica can find it. On my PC, Windows10, I have it in:

C:\Users\ …\AppData\Roaming\Mathematica\Applications

8

Hans, do you have a notebook that illustrates the use of your quaternions package? Also, how fully symbolic is it?

9

Hi David.

Please see the attached. Pdf overview and a notebook with examples. Also a simple palette.
And I would say it is fully symbolic.

It would be interesting to hear your views!

10

Hi Hans,

Your package appears to work as advertised. Better than the WRI package. Nice work.

I wonder if you could write me at my email address on my Profile page?