Meshing an ancient bathymetry. Extracted a coastline from bathymetry (after projecting into stereographic space), tidied up the shapefile (removing lakes, isolated nodes, etc) and meshed and got the error below. I can provide the shapefile on request, but it's commercial-in-confidence so can't post it here.
What does the error mean? Is it possible to get more diagnostic info (which ring?)
An error has occured while executing Python code:
Traceback (most recent call last):
File "/usr/share/qgis/python/plugins/mesh_netcdf/meshnetcdf.py", line 170, in run
self.meshNetCDF()
File "/usr/share/qgis/python/plugins/mesh_netcdf/meshnetcdf.py", line 71, in meshNetCDF
MeshOperations.MeshOp.meshNetCDF(self)
File "/usr/share/qgis/python/plugins/mesh_netcdf/MeshOperations.py", line 146, in meshNetCDF
self.getFiles()
File "/usr/share/qgis/python/plugins/mesh_netcdf/meshnetcdf.py", line 56, in getFiles
PreMeshingFunctions.PreMesh.getFiles(self)
File "/usr/share/qgis/python/plugins/mesh_netcdf/PreMeshingFunctions.py", line 85, in getFiles
self.runIdDef()
File "/usr/share/qgis/python/plugins/mesh_netcdf/meshnetcdf.py", line 54, in runIdDef
PreMeshingFunctions.PreMesh.runIdDef(self)
File "/usr/share/qgis/python/plugins/mesh_netcdf/PreMeshingFunctions.py", line 61, in runIdDef
self.define_bounds(self.dlg.ui.grpDefID.isChecked())
File "/usr/share/qgis/python/plugins/mesh_netcdf/PreMeshingFunctions.py", line 39, in define_bounds
DefineDomain.define_bounds(self, ok)
File "/usr/share/qgis/python/plugins/mesh_netcdf/define_id.py", line 12, in define_bounds
self.assignIDsMethod(isIdLayer)
File "/usr/share/qgis/python/plugins/mesh_netcdf/define_id.py", line 18, in assignIDsMethod
assignIDs.assignIDsMethod(self,ok)
File "/usr/share/qgis/python/plugins/mesh_netcdf/define_boundary_id.py", line 21, in assignIDsMethod
self.IDPolygons.append(Polygon([self.boundaryData.points[j][i] for i in range(len(self.boundaryData.points[j]))]))
File "/usr/lib/python2.7/dist-packages/shapely/geometry/polygon.py", line 214, in __init__
self._geom, self._ndim = geos_polygon_from_py(shell, holes)
File "/usr/lib/python2.7/dist-packages/shapely/geometry/polygon.py", line 422, in geos_polygon_from_py
geos_shell, ndim = geos_linearring_from_py(shell)
File "/usr/lib/python2.7/dist-packages/shapely/geometry/polygon.py", line 370, in geos_linearring_from_py
"A LinearRing must have at least 3 coordinate tuples")
ValueError: A LinearRing must have at least 3 coordinate tuples
Python version:
2.7.3 (default, Aug 1 2012, 05:25:23)
[GCC 4.6.3]
QGIS version:
1.8.0-Lisboa Lisboa, exported
Python path: ['/usr/share/qgis/python', '/home/jhill1/.qgis//python', '/home/jhill1/.qgis//python/plugins', '/usr/share/qgis/python/plugins', '/data2/jhill1/projects/Ancient_seas/data/palaeo_bathy/i', '/data2/jhill1/projects/Ancient_seas/data/palaeo_bathy', '/home/jhill1/projects/python', '/data2/jhill1/fluidity/trunk/tools', '/data2/jhill1/fluidity/trunk/python', '/home/jhill1/Data/software/p4-phylogenetics-read-only', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-linux2', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages/PIL', '/usr/lib/python2.7/dist-packages/gst-0.10', '/usr/lib/python2.7/dist-packages/gtk-2.0', '/usr/lib/pymodules/python2.7', '/usr/lib/python2.7/dist-packages/ubuntu-sso-client', '/usr/lib/python2.7/dist-packages/ubuntuone-client', '/usr/lib/python2.7/dist-packages/ubuntuone-control-panel', '/usr/lib/python2.7/dist-packages/ubuntuone-couch', '/usr/lib/python2.7/dist-packages/ubuntuone-installer', '/usr/lib/python2.7/dist-packages/ubuntuone-storage-protocol', '/usr/lib/python2.7/dist-packages/wx-2.6-gtk2-unicode', '/usr/share/qgis/python/plugins/QuickMultiAttributeEdit/forms', '/usr/lib/python2.7/dist-packages/Scientific/linux2', '/usr/share/qgis/python/plugins/fTools/tools']
