[pstricks] multido again

Michael Sharpe msharpe at ucsd.edu
Thu Dec 4 22:59:26 CET 2008


You cannot use PostScript code to specify a radius. The PSTricks  
parser understands PostScript in coordinates and angles, so you can  
use instead

			\psellipticarc(!0 \rt\space 2 mul cos neg)%
				(!\rt\space cos 2 mul dup){!\rt\space}{!180 \rt\space sub}


On Dec 4, 2008, at 1:15 PM, Zbigniew Nitecki wrote:

> 		\psarc[linewidth=1.2pt,arrows=->](0,0){2}{0}{180}
> 		\multido{\rt=10+10}{4}{%
> 			\psarc(!0 \rt\space 2 mul cos neg)%
> 				{!\rt\space cos 2 mul}{\rt}{!180 \rt\space sub}
> 		}

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