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[Octave-bug-tracker] [bug #48435] transparent patches can only be obtain
From: |
Francesco Potortì |
Subject: |
[Octave-bug-tracker] [bug #48435] transparent patches can only be obtained by printing to svg with gnuplot |
Date: |
Thu, 7 Jul 2016 10:40:45 +0000 (UTC) |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:46.0) Gecko/20100101 Firefox/46.0 |
URL:
<http://savannah.gnu.org/bugs/?48435>
Summary: transparent patches can only be obtained by printing
to svg with gnuplot
Project: GNU Octave
Submitted by: pot
Submitted on: Thu 07 Jul 2016 12:40:43 PM CEST
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: 4.0.2
Operating System: GNU/Linux
_______________________________________________________
Details:
The following code should produce two partially transparent, overlapping
triangles of different colours delimited by solid lines:
hold on
fill([0 2 1], [0 0 2], 'b', 'facealpha', 0.3)
fill([0 2 1], 1+[0 0 2], 'r', 'facealpha', 0.3)
Note that Postscript generally cannot handle transparency, so we are using X
and SVG.
When using fltk:
- on X the triangles are completely transparent, no colour
- printing to svg is the same, and additionally the lines are dashed
When using gnuplot 5:
- on X the triangles are coloured as expected, but opaque
- printing to svg the result is as expected
The only way to obtain the expected result is to use gnuplot and print to SVG.
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?48435>
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- [Octave-bug-tracker] [bug #48435] transparent patches can only be obtained by printing to svg with gnuplot,
Francesco Potortì <=
- [Octave-bug-tracker] [bug #48435] transparent patches can only be obtained by printing to svg with gnuplot, Rik, 2016/07/07
- [Octave-bug-tracker] [bug #48435] transparent patches can only be obtained by printing to svg with gnuplot, Francesco Potortì, 2016/07/07
- [Octave-bug-tracker] [bug #48435] Document capabilities and failings of each toolkit (gnuplot, fltk, qt), Rik, 2016/07/07
- [Octave-bug-tracker] [bug #48435] Document capabilities and failings of each toolkit (gnuplot, fltk, qt), Mike Miller, 2016/07/07
- [Octave-bug-tracker] [bug #48435] Document capabilities and failings of each toolkit (gnuplot, fltk, qt), Rik, 2016/07/07
- [Octave-bug-tracker] [bug #48435] Document capabilities and failings of each toolkit (gnuplot, fltk, qt), Dmitri A. Sergatskov, 2016/07/07
- [Octave-bug-tracker] [bug #48435] Document capabilities and failings of each toolkit (gnuplot, fltk, qt), Lachlan Andrew, 2016/07/07