[pstricks] multido+rotation

[Poul Riis]

Graphics with PSTricks <pstricks at tug.org> den 13 January 2007 kl. 19:00
+0000 skrev:
>1) in the line of \newcommand{\rotat...}, I guess (!0 0) is the center 
>of the rotation? what does the exclamation sign mean? why didn't you 
>write (0,0) instead?
Well, (0,0) works as well. However, I very often use calculated
expressions for coordinates. In this case the expressions must be post
script code which have to be written in the (!x-expression y-expression)
form (and preceded by the command \SpecialCoor - this answers your next
question). But I see that my example is not very pedagogical...
>
>2) why do you use the command \SpecialCoor?



Yours,
Poul Riis

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