attribute_parameters_obj = nau.InputTable(attribute_parameters)
#Keep a list of input copies so we can delete them just before exit
input_copies = (facilities_obj, incidents_obj, point_barriers_obj,
line_barriers_obj, polygon_barriers_obj,
attribute_parameters_obj)
#If the network dataset does not support hierarchy, set the useHierarchy parameter to false.
nds_has_hierarchy = nau.nds_supports_hierarchy(desc_nds_attributes)
if not nds_has_hierarchy:
use_hierarchy = False
#determine whether we should use time based or distance based impedance attribute based on measurement method
impedance_attribute = time_attribute if measurement_method == "TRAVEL_TIME" else distance_attribute
impedance_units = nau.verify_impedance_units(time_attribute,
time_attribute_units,
distance_attribute,
distance_attribute_units,
desc_nds_attributes,
False)[impedance_attribute]
#If the Cutoff is specified, convert the cutoff value from user specified unit to impedance unit
if default_cutoff:
converted_cutoff = nau.convert_units(default_cutoff, measurement_units,
impedance_units)
else:
converted_cutoff = default_cutoff
#Get counts for facilities, incidents, barrier features and attribute parameters
facility_count = facilities_obj.count
incident_count = incidents_obj.count
#Convert inputs from record sets to feature classes if they are not empty.
#determine whether we should use time based or distance based impedance attribute based on break units
#using python ternary operator here.
impedanceAttribute = timeImpedance if breakUnits.lower() in TIME_UNITS else distanceImpedance
#get the user supplied break values as list for easy processing
breakValueList = [val.encode("utf-8") for val in breakValues.strip().split()]
breakValueCount = len(breakValueList)
if breakValueCount == 0:
arcpy.AddIDMessage("ERROR",30117)
raise nau.InputError()
#Find the largest break value.
try:
endBreakValue = max([locale.atof(val) for val in breakValueList])
except ValueError:
arcpy.AddIDMessage("ERROR",30118)
raise nau.InputError()
impedanceUnit = nau.verify_impedance_units(timeImpedance,timeImpedanceUnits,distanceImpedance,
distanceImpedanceUnits,descNDSAttributes,False)[impedanceAttribute]
#Convert break values from user specified units to impedance units.
convertedBreakValueList = nau.convert_units(breakValueList,breakUnits,impedanceUnit)
converetedEndBreakValue = max([locale.atof(val) for val in convertedBreakValueList])
zeroString = nau.float_to_string(0,ROUND_PRECISION)
##Determine if the throtling conditions are met. If not raise an exception and quit
##If throtling parameters have zero value, then do not perform throtlling checks.
# Thortling Check 1: Check for number of facilities
if facilities_obj.count == 0:
arcpy.AddIDMessage("ERROR",30117)
raise nau.InputError()
if strMaxFacilities and facilities_obj.count > maxFacilities:
arcpy.AddIDMessage("ERROR", 30096,"Facilities", maxFacilities)
raise nau.InputError()
incidents_obj,
point_barriers_obj,
line_barriers_obj,
polygon_barriers_obj,
attribute_parameters_obj,
)
# If the network dataset does not support hierarchy, set the useHierarchy parameter to false.
nds_has_hierarchy = nau.nds_supports_hierarchy(desc_nds_attributes)
if not nds_has_hierarchy:
use_hierarchy = False
# determine whether we should use time based or distance based impedance attribute based on measurement method
impedance_attribute = time_attribute if measurement_method == "TRAVEL_TIME" else distance_attribute
impedance_units = nau.verify_impedance_units(
time_attribute, time_attribute_units, distance_attribute, distance_attribute_units, desc_nds_attributes, False
)[impedance_attribute]
# If the Cutoff is specified, convert the cutoff value from user specified unit to impedance unit
if default_cutoff:
converted_cutoff = nau.convert_units(default_cutoff, measurement_units, impedance_units)
else:
converted_cutoff = default_cutoff
# Get counts for facilities, incidents, barrier features and attribute parameters
facility_count = facilities_obj.count
incident_count = incidents_obj.count
# Convert inputs from record sets to feature classes if they are not empty.
if facility_count:
facilities_obj.copyFeatures(out_gdb_workspace, FACILITIES_FIELDS)
#get the user supplied break values as list for easy processing
breakValueList = [
val.encode("utf-8") for val in breakValues.strip().split()
]
breakValueCount = len(breakValueList)
if breakValueCount == 0:
arcpy.AddIDMessage("ERROR", 30117)
raise nau.InputError()
#Find the largest break value.
try:
endBreakValue = max([locale.atof(val) for val in breakValueList])
except ValueError:
arcpy.AddIDMessage("ERROR", 30118)
raise nau.InputError()
impedanceUnit = nau.verify_impedance_units(
timeImpedance, timeImpedanceUnits, distanceImpedance,
distanceImpedanceUnits, descNDSAttributes, False)[impedanceAttribute]
#Convert break values from user specified units to impedance units.
convertedBreakValueList = nau.convert_units(breakValueList, breakUnits,
impedanceUnit)
converetedEndBreakValue = max(
[locale.atof(val) for val in convertedBreakValueList])
zeroString = nau.float_to_string(0, ROUND_PRECISION)
##Determine if the throtling conditions are met. If not raise an exception and quit
##If throtling parameters have zero value, then do not perform throtlling checks.
# Thortling Check 1: Check for number of facilities
if facilities_obj.count == 0:
arcpy.AddIDMessage("ERROR", 30117)
raise nau.InputError()
