# [pstricks] multido

Michael Sharpe msharpe at ucsd.edu
Sat Nov 22 22:59:56 CET 2008

Herbert,

I suggest that the following paragraph be added to the end of the
Coordinates section.

Michael

Unlike coordinates in two dimensions, three dimensional coordinates
may be specified using PostScript code, which need not be preceded by
\verb+!+. For example, assuming \verb+\def\nA{2}+, (1,0,2) and \verb
+(90 cos, 100 100 sub, \nA\space 2 div 1 add)+ specify the same point.
(Recall that a \verb+\space+ is required after a macro that will be
expanded into PostScript code, as \TeX\ absorbs the space following a
macro.)

On Nov 22, 2008, at 12:33 PM, Herbert Voss wrote:

> Michael Sharpe schrieb:
>> Aha, I did not realize that ThreeD coordinates accept PostScript
>> code.
>> This seems very important and useful, and may be worth emphasis in
>> the
>> documentation, which currently states simply that "pst-3dplot accepts
>> cartesian or spherical coordinates".
>
> Michael,
> you're absolutely right.
> can you modify the part of the documentation?
> And then send me the oart as tex source.
>
> Herbert