[Qgis-user] Detect order of vertexs

[Andrea Peri]

Hi,

I have an invalid geometry due to a self-intersect
I find it using the tools for validating.
But the tool report the record with the wrong geometry not report
(obviously) the vertex .

Now I must to find the vertex to correct the problem.
But the shape of geometry is quite complex, has many vertex, and often it is
touchind itself without a real self-intersect.
These touches are not error. But most probably some of these touch are
instead intersection. So I must find what between all the touching are
instead intersections and correct them.

To understand where is the intersect I need follow all the vertex of the
shape.

I don't find nothing to do something to follow all vertexs of the geometry.

Because the geometry is a polygon, I try to build a rendering with a fill
empty and an outline with a decoration using an arrow to see the orientation
of the lines (hoping to detect the intersection) but this choice seem to be
impossible.

There a method to follow the vertex of a shape in qgis ?

Thx,


-- 
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Andrea Peri
. . . . . . . . .
qwerty àèìòù
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