Help printing parametric plot

[John B. Thoo]

Hi.  Courtesy of A.S. Hodel, I have a printeps script that I've used 
numerous times before.


function printeps(filename)
% function printeps(filename)
% replot screen plot to a file
% inputs:
%   filename: string:
% no argument checking done - this means YOU mark!

  gset terminal postscript eps color
  eval(sprintf("gset output '%s'", filename));
  replot
  #gset terminal x11
  closeplot
endfunction


However, today I found that printeps won't work to print the following 
parametric plot.

octave:3> graw ("set parametric\n set size ratio -1\n plot [t=0:4*pi] t 
- sin (t), 1 - cos (t)\n")
octave:4> printeps ('cycloid.eps', 'small')
error: replot: must have something to plot
error: called from `printeps' in file 
`/sw/share/octave/site/m/printeps.m'
octave:4>

I can see the plot result, but I can't print.  What am I doing wrong?  
(I'm sorry that I don't understand enough syntax to fix the script.)  
Thanks.

---John.



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