[pstricks] ifelse in \psplot

[Herbert Voss]

Goebel, Juergen, OPE26 wrote:

>   \psplot{0}{24}{%
>      x 15 mul sin 3 mul
>      x 15 mul 3 mul sin
>      sub
>      4.5 mul
>   }

   \psplot{0}{24}{%
      x 15 mul sin 3 mul
      x 15 mul 3 mul sin
      sub
      4.5 mul
      dup 0 lt { pop 0 } if
   }


or

   \psplot{0}{24}{%
      x 15 mul sin 3 mul
      x 15 mul 3 mul sin
      sub
      4.5 mul
      /y exch def
      y 0 lt { 0 }{ y } ifelse
   }



Herbert



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