- fix for issue 166 
- fix for issue 166 

tectronics/pysal,Alwnikrotikz/pysal,Alwnikrotikz/pysal,AlanZatarain/pysal,tectronics/pysal,AlanZatarain/pysal,Alwnikrotikz/pysal,AlanZatarain/pysal,tectronics/pysal