[Qgis-developer] qgis 2.2: removing spit and disabling "avoid intersection of new polygons"

Giovanni Manghi giovanni.manghi at faunalia.pt
Fri Jan 24 09:30:18 PST 2014

Hi all,

a while ago I proposed to get rid of SPIT as it is unmaintained and
now redundant with a similar tool in the processing toolbox. This will
happen for 2.2?

More serious is the issue with the "avoid intersection" option in the
snapping dialog:

the functionality is broken as it often does not remove all the
overlapped parts, leaving behind (very) small areas and creating
multipart polygons when it is supposed to not happen.

There have been some discussion (and even a fix funding proposal) but
afaik no work has been done.

As this tool does not work as advertised and creates a lot of issues
when digitizing maps than need to be topologically correct, then I
propose to disable it until fixed (and this is a pity, as is one of
the most powerful options in qgis regarding dizigiting).

What is your opinion?

Giovanni Manghi
Sistemas de Informação Geográfica Open Source

Web: http://www.faunalia.pt
Email & Jabber: giovanni.manghi at faunalia.pt
PGP Key available
Tel. + 351 96 7058216

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