[pstricks] question about coordinates

[moeller_olaf at yahoo.de]

Am Montag, 23. Januar 2006 18:20 schrieb Christophe Jorssen:
> pstricks-bounces at tug.org wrote:
> > Hi to All,
> >
> > I found in a File including PSTricks the following:
> >
> >   \multido{\i=1+1}{8}{%
> >     \psline[linestyle=dashed](!\i\space 0)(!\i\space 10 \i\space 1
> >     add div)% \psline[linestyle=dotted]%
> >       (!1 10 \i\space div)(!\i\space  1 sub  10 \i\space div)}
> >
> >
> > I understand the multido-package, but I don't understand the
> > construction of the coordinates. Who can explain it? What is the
> > x-coordinate and what the y-coordinate?
>
> The structure for \SpecialCoor with Postscript raw code is :
>
> (! <PostScript code for x coordinate> <PostScript code for y coordinate>)
>
> So
>
> (! 1 1 add 2 2 add) stands for (2,4)
>
> > Where do I find more about that construktion?
>
> In the reference manual page 72.
>
> > Is it a postscript-code?
>
> Yes.
>
> --
> Christophe
>

Bingo! I find it and I am happy.

Now, I try to build a beamer-präsentation, where childrens can see how the 
archimedes princip works for calculating the area under a graph - as an 
introduktion to integrals

Olaf Möller

Berlin - Germany

	

	
		
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