Re: black and white printable graphs

[Shai Ayal]

Actually, I would recommend making eps graphs and than converting them into PDF 
using the epstopdf utility (it's a perl script) available on the web. If you 
use linux you probably already have it installed.

although newer gnuplot has a PDF terminal, the PDF files it produces are not as good as 
the EPS terminal. So gnuplot -> EPS -> epstopdf > PDF is the best way to go if 
you are importing into PDF later.

This would give you a vector PDF graph, i.e. no loss of resolution as in JPG or 
PNG files. Zoom in as much as you want and get much better printed quality.

Shai

Quentin Spencer wrote:
> NZG wrote:
>
> > Currently when I generate graphs I use the octave-forge print utility 
> > to create jpg's and then import them into PDF's
> >
> > i.e.
> > plot(n,(ylow+yhigh),"^;;6");
> > title('y(n)');
> > xlabel('n');
> > ylabel('y');
> > print('graph5.jpg','-djpg')
> >
> > I've discovered, however, that the colored lines of plot utility do 
> > not show up at all on my black and white printer.
> >
> > I have also discovered that the Octave plot utility doesn't seem to be 
> > able to generate black lines.
> >
> > Am I missing something?
> > How is this typically done?
> >
> > thx,
> > NZG.  
> First, if you're importing the files into PDF, I would suggest exporting 
> into postscript. The result will look better and have smaller file size 
> than JPG. I believe the line colors are different, and I think one of 
> them is black. If you export into black and white postscript, all of the 
> lines are black with different patterns. Another option is to export 
> into Xfig format, which can be then converted directly to PDF by recent 
> versions of Xfig.
>
> The lack of ability to get black linestyle in gnuplot on screen is one 
> of gnuplot's many limitations. If you type "man gnuplot", it tells how 
> to change the default linecolors in gnuplot at startup. I'm not sure how 
> to do this in the context of octave, but it would be really nice if 
> gnuplot gave better control over colors.
>
> -Quentin
>
>
>
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--
Shai Ayal, Ph.D.
Head of Research
BioControl Medical BCM
3 Geron St.
Yehud 56100
ISRAEL
Tel:  + 972 3 6322 126
Fax:  + 972 3 6322 125
email: address@hidden



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Octave is freely available under the terms of the GNU GPL.

Octave's home on the web:  http://www.octave.org
How to fund new projects:  http://www.octave.org/funding.html
Subscription information:  http://www.octave.org/archive.html
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