[pstricks] Rendering modified arguments inside a macro

[Herbert Voss]

Am 11.12.2009 14:39, schrieb Jorge Nto:

> Were < ?MathematicalExpressionToEval? > is what I want to display inside a
> graphic.
> As it can be seen, the evaluation of the expression for the x coordinate <
> !#2 2 mul > works well
> But the RPN syntax doesn't seem to be evaluated. For example if I write:
> 
> \rput(!#2 2 mul, #4){ ! #6 20 mul 2 add }%

\rput(!#2 2 mul #4){! #6 20 mul 2 add }%
              ^^^^^

in PostScript mode always without a comma

Herbert



> 
> and lets say #2 = 10, # 4 = 5 and #6 = 4  then at coordinate (10,5) I get
> just : "! #6 20 mul 2 add " .
> Although it should display 82 (4*20 + 2).
> How can I evaluate this?
> 
> Thanks a lot
> 
> 
> 
> 
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