Opened 9 years ago

Closed 9 years ago

#2613 closed defect (fixed)

Polygons disappear after v.overlay AND operation

Reported by: dido Owned by: grass-dev@…
Priority: major Milestone:
Component: Vector Version: 7.0.0
Keywords: v.overlay and polygons damaged Cc:
CPU: x86-64 Platform: MSWindows 7

Description (last modified by martinl)

A shapefile polygon set A has been cut using a grid polygon B using a v.overlay AND operation. The result is expected to contain all the A polygons that are enclosed within the grid polygon B.

The output is almost as expected but several A polygons within the B rectangle are missing. GRASS version is 7.0.0.RC1. Here is the io console log:

(Fri Mar 06 11:07:12 2015)                                                      
v.overlay ainput=K3445_NEW_FISH@BGM_POLY_UTM binput=GRID_K34058@BGM_POLY_UTM operator=and output=K34058_NEW
Copying vector features from <K3445_NEW_FISH@BGM_POLY_UTM>...
Copying vector features from <GRID_K34058@BGM_POLY_UTM>...
Snapping boundaries with 1e-008 ...
Breaking lines...
Removing duplicates...
Cleaning boundaries at nodes...
Breaking lines...
Removing duplicates...
Cleaning boundaries at nodes...
Breaking lines...
Removing duplicates...
Cleaning boundaries at nodes...
WARNING: Number of incorrect boundaries: 949
Merging lines...
Attaching islands...
Building areas...
25262 areas built
7375 isles built
Attaching islands...
Number of nodes: 41280
Number of primitives: 60697
Number of points: 0
Number of lines: 0
Number of boundaries: 60697
Number of centroids: 0
Number of areas: 25262
Number of isles: 7375
Querying vector map <K3445_NEW_FISH@BGM_POLY_UTM>...
Querying vector map <GRID_K34058@BGM_POLY_UTM>...
Writing centroids...
WARNING: Unable to delete file 'E:\mapping\GRASS7DB/BGM_POLY_UTM/BGM_POLY_UTM/.tmp/unknown/vector/tmp_7316/coor'
Building topology for vector map <K34058_NEW@BGM_POLY_UTM>...
Registering primitives...
42630 primitives registered
642388 vertices registered
Building areas...
12823 areas built
2888 isles built
Attaching islands...
Attaching centroids...
Number of nodes: 19873
Number of primitives: 42630
Number of points: 0
Number of lines: 0
Number of boundaries: 29808
Number of centroids: 12822
Number of areas: 12823
Number of isles: 2888
v.overlay complete.
(Fri Mar 06 11:07:46 2015) Command finished (34 sec)  

Files can be provided upon request (~50 Mb).

Change History (3)

comment:1 by mmetz, 9 years ago

A number of bugs related to vector topology have been found in 7.0.0RC1 and fixed in the final release of 7.0.0. Please try gain with the final release.

comment:2 by dido, 9 years ago

Hi,

I've checked the same workflow on the stable 7.0.0 release and it seems to be OK. You may close the issue.

Best regards, Deyan.

comment:3 by martinl, 9 years ago

Description: modified (diff)
Resolution: fixed
Status: newclosed
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