I am not sure I understand exactly the problem you are having.
I have used EMF files for transferring graphical output from the plot
package and they seem to scale well and not have unexpected jaggedness even
for large print sizes. They seem to work fine in both J601 and J602a using
pd 'save emf filename.emf'
For other line graphics the turtle geometry lab uses the gdemf function and
that also seems to work though I have had some problems with line size. See
the help'' in that lab.
Fraser
----- Original Message -----
From: "Shaw, Ewart" <[EMAIL PROTECTED]>
To: "Programming forum" <[email protected]>
Sent: Friday, October 26, 2007 12:31 AM
Subject: RE: [Jprogramming] High quality graphics files (& glfile)
Thanks Oleg.
I prefer vector graphics on principle. The lines are typically not fine,
but must be accurately placed - by "jaggedness" I mean that if (e.g.)
you store the 2D-LinePatterns plot as EPS or PDF and magnify the result,
you'll find the individual line segments don't lie on smooth curves.
Similarly for EMFs - see my reply to Devon McCormick.
I can continue using bitmaps with roll-my-own algorithms. In particular,
my dashed and dotted lines use cumulative arc length to assign individual
segments, and look much better than most readily available alternatives.
The final PNG files aren't excessively big, and I haven't yet needed
very fine pens + anti-aliasing. I'll report back eventually.
I still hope to investigate EMFs, if I can get glfile (or its equivalent)
to work.
J.E.H.Shaw http://www.warwick.ac.uk/statsdept
Ewart Shaw http://www.ewartshaw.co.uk
-----Original Message-----
From: [EMAIL PROTECTED] on behalf of Oleg Kobchenko
Sent: Wed 24/10/2007 23:54
To: Programming forum
Subject: Re: [Jprogramming] High quality graphics files (& glfile)
Could it be clarified what is needed
- high resolution bitmap graphics (BMP, not EPS) OR
- vector graphics (EPS or PDF) with fine lines
? And what exactly is jaggedness?
For the fine vector graphics for example, in the Demo page
Studio|Demos|plot|2D-LinePatterns set
pd 'pensize 0.001'
then save to EPS (Options|Save EPS) and it will produce
very thin lines.
For bitmap graphics, you can roll your own antialiasing:
- pd 'pensize 2' use thick lines
- and 'save bmp [file] [w h]' i.e. huge w h
- resize 0.25 or so times with nice resampling like Lanczos.
which will produce thin and smooth lines.
Would you be looking for bitmap renderer that produces
antialiased output by itself like GDI+/Cairo/Quartz/Java2D?
....
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