AW: [Qgis-developer] Trace edit

Paolo Cavallini cavallini at
Sun Nov 28 09:57:58 EST 2010

Il 28/11/2010 13:26, cmoe ha scritto:

> what version of Qgis are using with the traceDigitize? I have quite


> problems to reproduce the errors in trunk. What layer types are you
> using (shape/postgres)? Is it possible to provide a step by step list to
> reproduce it, maybe with some sample data?

Checked, I cannot reproduce it either (after upgrading to the latest version), no
idea why.

> On the other hand it is very easy with the tool to produce invalid
> geometries. If you have a snapping distance of e,g, 20 pixels and your
> snapping in the middle of a segment thats about 40 px long or your too
> close to a vertex, the tool will snap some vertices that you are not
> aware of it. This should only be true if you have set the snapping layer
> to "vertex and segment". I have to think about, how to solve this.

Right. Maybe snapping to segments should be disabled?
All the best.
Paolo Cavallini:

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