Adding a new vertex ignore snap on polygon whit self intersection

[qgib]

Author Name: Antonio Viscomi (@Antoviscomi)
Original Redmine Issue: 20172
Affected QGIS version: 3.3(master)
Redmine category:editing

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Hi all,
I noticed another issues...
If there are some topological errors,
and I edit the feature to solve them,
in some polygon with self intersection, adding a new vertex on polygon ignore snap settings adding the new vertex anywhere in the shapefile and snapping this vertex to any polygon very far to the poligon I need to edit.
Then this point cause a hole that goes through the entire areal extension of map.

Regards

Antonio

[qgib]

Author Name: Giovanni Manghi (@gioman)

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It could be me, but I have not understand exactly what the issue is. Can you add detailed step by step operations to follow? Thanks.

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• status_id was changed from Open to Feedback

[qgib]

Author Name: Antonio Viscomi (@Antoviscomi)

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Giovanni Manghi wrote:

It could be me, but I have not understand exactly what the issue is. Can you add detailed step by step operations to follow? Thanks.

I need to edit a shapefile with topological error in (self intersections) the steps are:
-I try to add a vertex to a polygon with self intersection in;
-the vertex that I need to add don't snap to the neae adjacent polygon but on a far polygon in the same shape;

• then the added vertex it will cause a hole that goes through the shapefile;

[qgib]

Author Name: Antonio Viscomi (@Antoviscomi)

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-I try to add a vertex to a polygon with self intersection in;
-the vertex that I need to add don't snap to the neae adjacent polygon but on a far polygon in the same shape;

why these lines are underlined?

sorry I don't know how explain it better

[qgib]

Author Name: Giovanni Manghi (@gioman)

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sorry I don't know how explain it better

make a screencast, thanks.

[qgib]

Author Name: Antonio Viscomi (@Antoviscomi)

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Giovanni Manghi wrote:

sorry I don't know how explain it better

make a screencast, thanks.

Sorry,
I'm not able to reproduce this issue because I'd solved topological errors in the shapefile on which I noticed the issues appear.
I'll capture a screencast if the issues will appear again on other file
Greetings

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• resolution was changed from to not reproducable
• status_id was changed from Feedback to Closed