bugGNU Octave - Bugs: bug #36460, setting of ghostscript...

 
 

bug #36460: setting of ghostscript TextAlphaBits and GraphicsAlphaBits

Submitted by:  John Hunt <huntj>
Submitted on:  Sun 13 May 2012 01:19:34 PM UTC  
 
Category: PlottingSeverity: 3 - Normal
Priority: 5 - NormalItem Group: Feature Request
Status: FixedAssigned to: Ben Abbott <bpabbott>
Originator Name: Open/Closed: Closed
Release: devOperating System: GNU/Linux

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Sat 16 Jun 2012 01:18:04 AM UTC, comment #1:

I made some changes to John's patch, and pushed a changeset in his name.

http://hg.savannah.gnu.org/hgweb/octave/rev/0d6dae0f6bc2

Ben Abbott <bpabbott>
Project MemberIn charge of this item.
Sun 13 May 2012 01:19:34 PM UTC, original submission:

The patch attached allows to set the TextAlphaBits and GraphicsAlphaBits options sent to ghostscript for bitmap output
(tested with png).

This allows to workaround an antialiasing bug in ghostscript (9.05), which makes thin white lines appear in surface plots (pcolor or surf) with shading interp.

The solution is then to disable antialiasing for graphics :

Text antialiasing can also be turned off :

The default are --GraphicsAlphaBits=4 and --TextAlphaBits=4

Could it be included in octave ? should it be documented ?

John Hunt <huntj>

 

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Attach File(s):
   
   
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Attached Files
file #25852:  antialiasing.patch added by huntj (2KiB - text/x-patch)

 

Depends on the following items: None found

Items that depend on this one: None found

 

Carbon-Copy List
  • -unavailable- added by rik5 (Updated the item)
  • -unavailable- added by bpabbott (Updated the item)
  • -unavailable- added by huntj (Submitted the item)
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    Follow 7 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Fri 29 Jun 2012 05:21:44 PM UTCrik5StatusReady For Test=>Fixed
      Open/ClosedOpen=>Closed
    Sat 16 Jun 2012 01:18:04 AM UTCbpabbottStatusIn Progress=>Ready For Test
    Fri 15 Jun 2012 12:56:13 AM UTCbpabbottStatusNone=>In Progress
      Assigned toNone=>bpabbott
      Release3.6.1=>dev
    Sun 13 May 2012 01:19:34 PM UTChuntjAttached File-=>Added antialiasing.patch, #25852

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