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[Octave-bug-tracker] [bug #48387] Wrong line joins make noisy data much
From: |
ederag |
Subject: |
[Octave-bug-tracker] [bug #48387] Wrong line joins make noisy data much noisier |
Date: |
Sun, 3 Jul 2016 10:58:16 +0000 (UTC) |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:47.0) Gecko/20100101 Firefox/47.0 |
URL:
<http://savannah.gnu.org/bugs/?48387>
Summary: Wrong line joins make noisy data much noisier
Project: GNU Octave
Submitted by: ederag
Submitted on: Sun 03 Jul 2016 10:58:13 AM GMT
Category: Plotting with OpenGL
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Incorrect Result
Status: None
Assigned to: None
Originator Name:
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: dev
Operating System: GNU/Linux
_______________________________________________________
Details:
Sometimes printed plots look much noisier than they should, with Qt backend.
The files given have been obtained with the latest development version.
hg id -in
91611c9e1d81 22032
The attached `script_miter.m` loads an experimental data file, plot and print
it.
On screen (qt_screenshot.png) the plot looks fine, with little noise.
The printout (qt_try.png) is much noisier, to the point that the qt backend
can not be used for reporting purposes.
with graphics_toolkit("gnuplot"), the printout is fine (except for the color):
gnuplot_try.png.
At first sight, this seems related to bug #46529, but here the spacing is
reasonable (2048 points, minimum dx > 0.5).
Decimating is not an option here.
It might be related to line joins:
http://ngwww.ucar.edu/gks/ps.html#MiterLimit
_______________________________________________________
File Attachments:
-------------------------------------------------------
Date: Sun 03 Jul 2016 10:58:13 AM GMT Name: script_miter.m Size: 250B By:
ederag
<http://savannah.gnu.org/bugs/download.php?file_id=37677>
-------------------------------------------------------
Date: Sun 03 Jul 2016 10:58:13 AM GMT Name: qt_try.png Size: 21kB By:
ederag
<http://savannah.gnu.org/bugs/download.php?file_id=37678>
-------------------------------------------------------
Date: Sun 03 Jul 2016 10:58:13 AM GMT Name: qt_screenshot.png Size: 33kB
By: ederag
<http://savannah.gnu.org/bugs/download.php?file_id=37679>
-------------------------------------------------------
Date: Sun 03 Jul 2016 10:58:13 AM GMT Name: gnuplot_try.png Size: 22kB By:
ederag
<http://savannah.gnu.org/bugs/download.php?file_id=37680>
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?48387>
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- [Octave-bug-tracker] [bug #48387] Wrong line joins make noisy data much noisier,
ederag <=
- [Octave-bug-tracker] [bug #48387] Wrong line joins make noisy data much noisier, ederag, 2016/07/03
- [Octave-bug-tracker] [bug #48387] Wrong line joins make noisy data much noisier, ederag, 2016/07/03
- [Octave-bug-tracker] [bug #48387] Wrong line joins make noisy data much noisier, ederag, 2016/07/03
- [Octave-bug-tracker] [bug #48387] Wrong line joins make noisy data much noisier, ederag, 2016/07/03
- [Octave-bug-tracker] [bug #48387] Wrong line joins make noisy data much noisier, Doug Stewart, 2016/07/03
- [Octave-bug-tracker] [bug #48387] Wrong line joins make noisy data much noisier, ederag, 2016/07/03
- [Octave-bug-tracker] [bug #48387] Wrong line joins make noisy data much noisier, Dmitri A. Sergatskov, 2016/07/03
- [Octave-bug-tracker] [bug #48387] Wrong line joins make noisy data much noisier, ederag, 2016/07/03
- [Octave-bug-tracker] [bug #48387] Wrong line joins make noisy data much noisier, ederag, 2016/07/03
- [Octave-bug-tracker] [bug #48387] Wrong line joins make noisy data much noisier, ederag, 2016/07/03