[Rd] Re: [R] Postscript query: plotting long vectors (PR#3132)

[p.dalgaard at biostat.ku.dk]

Don MacQueen <macq at llnl.gov> writes:

> When I run the example in R 1.6.2, and view it with gs, I get a good plot.
> When I run the example in R 1.7.0, and view it with gs, I get a bad plot.
> (run on the same host)
> 
> My "bad plot" is as described by Stephen.
...
> (followed by ~200000 lines of the same type, with slowly changing values)
> 
> In the "bad" postscript file, at about the same point in the file, is this:
> %%EndProlog
> %%Page: 1 1
> bp
> 77.04 91.44 743.76 534.96 cl
> 0 0 0 rgb
> 0.75 setlinewidth
> [] 0 setdash
> np
> 101.73 313.20 m
> 0.00 0.01 l
> 0.00 0.01 l
> 0.00 0.01 l
> 0.00 0.01 l
> 0.00 0.01 l
> (followed by ~200000 lines, including some like these)

Confirmed on RedHat Linux 8.0. Filing as bug report. (An old
version of Splus had a similar bug: If you want to use rlineto, you
need to round *before* differencing.)  

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907