gnuplot-beta

Updated HTML version of demo scripts now on SourceForge

[Ethan A M. <merritt@u.washington.edu>]

I wrote a perl script to auto-generate a web page for each gnuplot demo 
script.  The perl script itself is now in the CVS tree as demo/webify.pl
I used it to create web pages for almost all of the current demos.
They are on
	http://gnuplot.sourceforge.net/demo/

There were some problems with the pm3d.dem run, and the
vector.dem run didn't work at all.

-- 
Ethan A Merritt
Department of Biochemistry & Biomolecular Structure Center
University of Washington, Seattle

Re: Updated HTML version of demo scripts now on SourceForge

[Daniel J S. <dan...@ie...>]

Ethan A Merritt wrote:

>I wrote a perl script to auto-generate a web page for each gnuplot demo 
>script.  The perl script itself is now in the CVS tree as demo/webify.pl
>I used it to create web pages for almost all of the current demos.
>They are on
>	http://gnuplot.sourceforge.net/demo/
>
>There were some problems with the pm3d.dem run, and the
>vector.dem run didn't work at all.
>

Oooo, nice.  Very impressive.

...

I noticed that the postscript output for the 'arrowstyle.dem' demo is 
missing some lines for only some of the arrows and also some of the 
arrowheads have dashed lines in them, but not all.  Anyone else see this?

Dan

Bug in PostScript arrows [ was Re: Updated HTML version of demo scripts now on SourceForge

[Ethan A M. <merritt@u.washington.edu>]

On Saturday 13 December 2003 10:35 am, Daniel J Sebald wrote:
> I noticed that the postscript output for the 'arrowstyle.dem' demo is
> missing some lines for only some of the arrows and also some of the
> arrowheads have dashed lines in them, but not all.  Anyone else see this?

I don't see any dashes, but yes - Arrow styles 1,3,4, and 5 in the demo
produce arrowheads only, with no shaft.

I wonder when this broke, and what broke it?

-- 
Ethan A Merritt
Department of Biochemistry & Biomolecular Structure Center
University of Washington, Seattle

Re: Bug in PostScript arrows [ was Re: Updated HTML version of demo scripts now on SourceForge

[Ethan A M. <merritt@u.washington.edu>]

On Saturday 13 December 2003 04:39 pm, Ethan A Merritt wrote:
> On Saturday 13 December 2003 10:35 am, Daniel J Sebald wrote:
> > I noticed that the postscript output for the 'arrowstyle.dem' demo is
> > missing some lines for only some of the arrows and also some of the
> > arrowheads have dashed lines in them, but not all.  Anyone else see this?
>
> I don't see any dashes, but yes - Arrow styles 1,3,4, and 5 in the demo
> produce arrowheads only, with no shaft.
>
> I wonder when this broke, and what broke it?

Found it.
It was broken by a patch from Mar 2003 that removed PS_FLUSH_PATH
from the start of PS_filled_polygon(). ChangeLog says:

2003-03-22  Petr Mikulik  <mi...@ph...>
        * term/post.trm(PS_filled_polygon): Don't call PS_FLUSH_PATH but reset
        ps_path_count instead (flush is automatic). Fixes broken pm3d map
        layout (required by pm3dConvert*.awk scripts) due to "stroke\n" in
        PS_FLUSH_PATH.

Restoring the PS_FLUSH_PATH in post.trm would fix the current problem.

Petr:

    Can you re-examine the problem with the awk scripts?  Because it
seems that the flush is in fact needed here.   It is not correct that the 
flush of the previous element is automatic.  Without an explicit "stroke"
command, any line followed immediately by a filled polygon is never drawn.

-- 
Ethan A Merritt
Department of Biochemistry & Biomolecular Structure Center
University of Washington, Seattle