Hi
Please see the attached screenshots. These are supposed to be the 30km buffers for the 'odra_glogow_brzeg_cl' (blue), a vector line, topologically clean for sure.
Why are the buffers so awfull? There isn't anything special about my input data or whatever. Any guess?
The vbuffer.png was made with 'debug=buffer':
v.buffer input=odra_glogow_brzeg_cl output=odra_glogow_brzeg_cl_buf30
type=line layer=1 buffer=30000 tolerance=0.01 debug=buffer
GRASS_INFO_MESSAGE(20920,1): The tolerance in map units: 300
Lines buffers ...
Rebuilding topology ...
Building topology ...
Registering lines:
1 primitives registered
Building areas:
1 areas built
1 isles built
Attaching islands:
Attaching centroids:
Topology was built.
Number of nodes : 1
Number of primitives: 1
Number of points : 0
Number of lines : 0
Number of boundaries: 1
Number of centroids : 0
Number of areas : 1
Number of isles : 1
Number of areas without centroid : 1
And vbuffer2.png made with debug=clean:
v.buffer input=odra_glogow_brzeg_cl output=odra_glogow_brzeg_cl_buf30
type=line layer=1 buffer=30000 tolerance=0.01 debug=clean
GRASS_INFO_MESSAGE(21567,1): The tolerance in map units: 300
Lines buffers ...
Building parts of topology ...
Building topology ...
Registering lines:
1 primitives registered
Topology was built.
Number of nodes : 1
Number of primitives: 1
Number of points : 0
Number of lines : 0
Number of boundaries: 1
Number of centroids : 0
Number of areas : -
Number of isles : -
Snapping boundaries ...
Registering points ...
All vertices: 117
Registered points (unique coordinates): 116
Nodes marked as anchor : 116
Nodes marked to be snapped : 0
Snaps: 0
Snapped vertices : 0
New vertices : 0
Breaking boundaries ...
Intersections: 0
Intersections: 22
Removing duplicates ...
Duplicates: 0
Duplicates: 1
Duplicates: 2
Duplicates: 3
Duplicates: 4
Attaching islands ...
Building topology ...
Building areas:
5 areas built
0 isles built
Attaching islands: Topology was built.
Number of nodes : 12
Number of primitives: 36
Number of points : 0
Number of lines : 0
Number of boundaries: 36
Number of centroids : 0
Number of areas : 5
Number of isles : 0
Number of incorrect boundaries : 14
Number of areas without centroid : 5
Rebuilding topology ...
Building topology ...
Registering lines:
24 primitives registered
Building areas:
5 areas built
0 isles built
Attaching islands: Attaching centroids:
Topology was built.
Number of nodes : 16
Number of primitives: 24
Number of points : 0
Number of lines : 0
Number of boundaries: 19
Number of centroids : 5
Number of areas : 5
Number of isles : 0
Number of incorrect boundaries : 14
Maciek
(attachments)
