[QUANTITY] Data Model for Quantity v0.5

[Brian Thomas]

On Tuesday 11 May 2004 01:54 pm, David Berry wrote:
> Brian,
>
> > > How can I get the necessary Mapping without the
> > > getCurrentCoordsQuantity() method?
> >
> > 	From the locator you are using, e.g.
> >
> > 	Quanity axisFrame = loc.getCurrentCoordsQuantity();
>
> So how would you modify the code example I gave, which was:
>
>    public void GridPlotter( StandardQuantity stdQ ){
>       Mapping map = stdQ.getCurrentCoordsQuantity().getMapping();
>
>       <then proceed to use the Mapping to transform arbitrary positions
>       backwards and forwards between pixel coords and current WCS coords>
>
>    }


	Make the "getMapping()" method require an AxisFrame as an input. e.g.

	Mapping map = stdQ.getMapping(frameIWantToUse);

	We can also have the empty accessor call ("getMapping()") which returns
	the default/first mapping if you like.

	=b.t.

>
> David
>
>
>
>
>
> ----------------------------------------------------------------------
> Dr David S. Berry    (dsb at ast.man.ac.uk)
>
> STARLINK project		 |	Centre for Astrophysics
> (http://www.starlink.ac.uk/)	 |	University of Central Lancashire
> Rutherford Appleton Laboratory	 |	PRESTON
> DIDCOT				 |	United Kingdom
> United Kingdom			 |	PR1 2HE
> OX11 0QX                                Tel. 01772 893733
>                                              01257 273192

-- 

  * Dr. Brian Thomas 

  * Dept of Astronomy/University of Maryland-College Park 
  * Code 630.1/Goddard Space Flight Center-NASA

  *   fax: (301) 286-1775
  * phone: (301) 286-6128 [GSFC]
           (301) 405-2312 [UMD]