Public bug reported: When converting state outline data, I found that for various states that inkscape would perform an unauthorized partial fill of the outline at various zoom levels, especially low zoom levels. This was seen for all states combined and for individual state files.
Looks like a classic case of a rasterization/fill algorithm being confused counting edges by minute details but why is such an algorithm even running on unfilled region? What happens if you actually try to fill is an exercise for the reader. One such state outline is attached. Converted using: http://www.carto.net/svg/utils/shp2svg/ Original data from: http://www.census.gov/geo/www/cob/st2000.html wget http://www.census.gov/geo/cob/bdy/st/st00shp/st51_d00_shp.zip ./ogis2svg.pl --input st51_d00.shp --output virginia.svg --roundval 0.000001 --outputunits mm <<\...EOF... y y y y y y y y y y y none y name y a n ...EOF... inkscape virginia.svg & To see the same error on multiple states, use the st99 file. ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: inkscape 0.48.2-0ubuntu1 ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4 Uname: Linux 3.0.0-12-generic x86_64 NonfreeKernelModules: fglrx ApportVersion: 1.23-0ubuntu4 Architecture: amd64 CheckboxSubmission: 1e1a99f31ec2933306456e1f141c45d8 CheckboxSystem: edda5d4f616ca792bf437989cb597002 Date: Wed Dec 14 23:34:48 2011 InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) ProcEnviron: PATH=(custom, user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: inkscape UpgradeStatus: Upgraded to oneiric on 2011-11-09 (35 days ago) ** Affects: inkscape (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug oneiric running-unity -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/904580 Title: spurious horizontal fill lines on unfilled polygons at low zoom levels To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/inkscape/+bug/904580/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs