Orientation system

[charnotw]

> From grass-lists-owner at moon.cecer.army.mil Thu Dec  7 19:28 GMT 1995
> Date: Thu, 7 Dec 1995 09:35:45 -0800 (PST)
> From: Susan Huse <sue at wohler.regis.berkeley.edu>
> Subject: Re: Orientation system
> Sender: grass-lists-owner at moon.cecer.army.mil
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> To: grassu-list at max.cecer.army.mil
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> 
> > You have a line along of which you want certain symbols to 
> > be drawn using a specific orentation....  If you'd say
> > "I want that symbol to be drawn +30 degrees added to the
> > vector direction", where would you expect the + to go ?
> > 
> > Meaning...  When adding angles, where do you add, where do you
> > substract....?
> > 
> 
> I would also go clockwise from the existing line.


definitely clockwise,  isn't that the way navigational bearings go
by convention ie a bearing of 270 is West?

cheers  Tom


Tom Charnock                       O--O
Dept Civil Engineering            (~~~~)
Aston University                 (  __  )
Birmingham B4 7ET UK             /|\  /|\
charnotw at sun.aston.ac.uk