def get_moran(self, w_type, params):
"""fetch data for moran's i analyses"""
try:
query = pu.construct_neighbor_query(w_type, params)
data = plpy.execute(query)
# if there are no neighbors, exit
if len(data) == 0:
return pu.empty_zipped_array(2)
return data
except plpy.SPIError, err:
plpy.error('Analysis failed: %s' % e)
return pu.empty_zipped_array(2)
def get_getis(self, w_type, params):
"""fetch data for getis ord's g"""
try:
query = pu.construct_neighbor_query(w_type, params)
result = plpy.execute(query)
# if there are no neighbors, exit
if len(result) == 0:
return pu.empty_zipped_array(4)
else:
return result
except plpy.SPIError, err:
plpy.error('Analysis failed: %s' % err)
def get_markov(self, w_type, params):
"""fetch data for spatial markov"""
try:
query = pu.construct_neighbor_query(w_type, params)
data = plpy.execute(query)
if len(data) == 0:
return pu.empty_zipped_array(4)
return data
except plpy.SPIError, err:
plpy.error('Analysis failed: %s' % err)