Fw: [R] Why color changed in ps.file?

[Stat/NCKU]

 Thanks Prof. Ripley's response!
 
 However, I have to apologize to Prof. Ripley & all R-friends:
 the problem (after I re-tried several times) is neither on R nor on 
 Ghostscript. 
 It is on the DVI-preview program I used: YAP, it causes color
 yellow to purple, blue to green, red to blue, ... on the included
 postscript files.
 
 I am very sorry to bother everyone with this!
 
 Best regards,
 
 Joseph Lu
 
 P.S. Thanks Prof. Ripley again on advising updating my R to new version.
 

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