TypeError: object of type 'NoneType' has no len()

[maphew]

First attempt to use esri2topo. Haven't attempted any troubleshooting yet, filing the issue new to have something to hang more info on as it progresses.

input shapefile: https://dl.dropboxusercontent.com/u/227354/gisdata/simple_tissot.zip

D:\GitHub\esri2topo\scripts>python single.py b:\code\cahill-keyes\data\tissot.shp simple_tissot.topojson
Found 60 features
Traceback (most recent call last):
  File "single.py", line 9, in <module>
    topojson(tempfl,GetParameterAsText(1))
  File "D:\GitHub\esri2topo\scripts\topojson\conversion.py", line 16, in convert
    out = topology(inpt,options)
  File "D:\GitHub\esri2topo\scripts\topojson\topology.py", line 151, in topology
    makeTopoInst = makeTopo(objects)
  File "D:\GitHub\esri2topo\scripts\topojson\mytypes.py", line 14, in __init__
    self.obj(obj)
  File "D:\GitHub\esri2topo\scripts\topojson\mytypes.py", line 46, in obj
    self.outObj[fName]=self.FeatureCollection(obj[fName])
  File "D:\GitHub\esri2topo\scripts\topojson\topology.py", line 120, in FeatureCollection
    collection['geometries'] = map(self.Feature,collection['features'])
  File "D:\GitHub\esri2topo\scripts\topojson\topology.py", line 117, in Feature
    return self.geometry(geometry);
  File "D:\GitHub\esri2topo\scripts\topojson\topology.py", line 137, in geometry
    types.geometry(self,geometry)
  File "D:\GitHub\esri2topo\scripts\topojson\mytypes.py", line 68, in geometry
    return self.Polygon(geometry)
  File "D:\GitHub\esri2topo\scripts\topojson\topology.py", line 128, in Polygon
    polygon['arcs'] = map(ln.lineClosed,polygon['coordinates'])
  File "D:\GitHub\esri2topo\scripts\topojson\line.py", line 141, in lineClosed
    return self.line(points,False)
  File "D:\GitHub\esri2topo\scripts\topojson\line.py", line 104, in line
    if k == n and len(p) > 1:
TypeError: object of type 'NoneType' has no len()

[calvinmetcalf]

Null geometry On Dec 20, 2013 7:02 PM, "matt wilkie" notifications@github.com wrote:

First attempt to use esri2topo. Haven't attempted any troubleshooting yet, filing the issue new to have something to hang more info on as it progresses.

D:\GitHub\esri2topo\scripts>python single.py b:\code\cahill-keyes\data\tissot.shp simple_tissot.topojson Found 60 features Traceback (most recent call last): File "single.py", line 9, in topojson(tempfl,GetParameterAsText(1)) File "D:\GitHub\esri2topo\scripts\topojson\conversion.py", line 16, in convert out = topology(inpt,options) File "D:\GitHub\esri2topo\scripts\topojson\topology.py", line 151, in topology makeTopoInst = makeTopo(objects) File "D:\GitHub\esri2topo\scripts\topojson\mytypes.py", line 14, in init self.obj(obj) File "D:\GitHub\esri2topo\scripts\topojson\mytypes.py", line 46, in obj self.outObj[fName]=self.FeatureCollection(obj[fName]) File "D:\GitHub\esri2topo\scripts\topojson\topology.py", line 120, in FeatureCollection collection['geometries'] = map(self.Feature,collection['features']) File "D:\GitHub\esri2topo\scripts\topojson\topology.py", line 117, in Feature return self.geometry(geometry); File "D:\GitHub\esri2topo\scripts\topojson\topology.py", line 137, in geometry types.geometry(self,geometry) File "D:\GitHub\esri2topo\scripts\topojson\mytypes.py", line 68, in geometry return self.Polygon(geometry) File "D:\GitHub\esri2topo\scripts\topojson\topology.py", line 128, in Polygon polygon['arcs'] = map(ln.lineClosed,polygon['coordinates']) File "D:\GitHub\esri2topo\scripts\topojson\line.py", line 141, in lineClosed return self.line(points,False) File "D:\GitHub\esri2topo\scripts\topojson\line.py", line 104, in line if k == n and len(p) > 1: TypeError: object of type 'NoneType' has no len()

— Reply to this email directly or view it on GitHubhttps://github.com/calvinmetcalf/esri2topo/issues/1 .

[maphew]

Nope, not empty. Here's the output of the same shape file fed through Mapshaper online conversion service: https://gist.github.com/maphew/8063635

Maybe because it crosses hemispheres?

I'm away from my arcgis computer until January; will follow up more then.

[calvinmetcalf]

it's the ellipse, when you export it to a shapefile it's turned into a polygon by arcmap, but topojson.py sees that as invalid geometry, Try using the topo branch of esri2open, it has my more recent work