def categorical_thresholds():
field = GroupParameter()
field.must_scroll = False
field.name = 'Categorical thresholds'
field.is_required = True
field.help_text = tr('Hazard classes thresholds.')
field.description = tr(
'Describe the upper thresholds of each hazard class. Each threshold '
'should be greater value than previous one.')
field.value = [
low_hazard_class(),
medium_hazard_class(),
high_hazard_class()
]
field.custom_validator = increasing_validator
return field
def threshold_group_parameter():
"""Generate group parameter of threshold to define constraints.
:return: a group parameter
:rtype: GroupParameter
"""
field = GroupParameter()
field.name = 'Hazard Threshold'
field.is_required = True
field.help_text = tr('Define thresholds for Ash hazard zones.')
field.description = tr('Define thresholds for Ash hazard zones.')
unaffected = unaffected_threshold()
very_low = very_low_threshold()
low = low_threshold()
moderate = moderate_threshold()
high = high_threshold()
field.value_map = {
'unaffected_threshold': unaffected,
'very_low_threshold': very_low,
'low_threshold': low,
'moderate_threshold': moderate,
'high_threshold': high
}
field.value = [unaffected, very_low, low, moderate, high]
def threshold_validator(param):
"""Inspect the value of the parameter
:param param: FloatParameter in validation
:type param: FloatParameter
:returns: True if valid
:rtype: bool
"""
valid = True
message = None
if ((param == unaffected and param.value >= very_low.value)
or (param == very_low and param.value < unaffected.value)):
message = tr(
'Unaffected threshold must less than Very Low threshold')
valid = False
if ((param == very_low and param.value >= low.value)
or (param == low and param.value < very_low.value)):
message = tr('Very Low threshold must less than Low threshold')
valid = False
if ((param == low and param.value >= moderate.value)
or (param == moderate and param.value < low.value)):
message = tr('Low threshold must less than Moderate threshold')
valid = False
if ((param == moderate and param.value >= high.value)
or (param == high and param.value < moderate.value)):
message = tr('Moderate threshold must less than High threshold')
valid = False
if not valid:
raise ValueError(message)
return valid
field.custom_validator = threshold_validator
return field
def threshold_group_parameter():
"""Generate group parameter of threshold to define constraints.
:return: a group parameter
:rtype: GroupParameter
"""
field = GroupParameter()
field.name = 'Hazard Threshold'
field.is_required = True
field.help_text = tr('Define thresholds for Ash hazard zones.')
field.description = tr('Define thresholds for Ash hazard zones.')
unaffected = unaffected_threshold()
very_low = very_low_threshold()
low = low_threshold()
moderate = moderate_threshold()
high = high_threshold()
field.value_map = {
'unaffected_threshold': unaffected,
'very_low_threshold': very_low,
'low_threshold': low,
'moderate_threshold': moderate,
'high_threshold': high
}
field.value = [
unaffected,
very_low,
low,
moderate,
high
]
def threshold_validator(param):
"""Inspect the value of the parameter
:param param: FloatParameter in validation
:type param: FloatParameter
:returns: True if valid
:rtype: bool
"""
valid = True
message = None
if ((param == unaffected and param.value >= very_low.value) or
(param == very_low and param.value < unaffected.value)):
message = tr(
'Unaffected threshold must less than Very Low threshold')
valid = False
if ((param == very_low and param.value >= low.value) or
(param == low and param.value < very_low.value)):
message = tr(
'Very Low threshold must less than Low threshold')
valid = False
if ((param == low and param.value >= moderate.value) or
(param == moderate and param.value < low.value)):
message = tr(
'Low threshold must less than Moderate threshold')
valid = False
if ((param == moderate and param.value >= high.value) or
(param == high and param.value < moderate.value)):
message = tr(
'Moderate threshold must less than High threshold')
valid = False
if not valid:
raise ValueError(message)
return valid
field.custom_validator = threshold_validator
return field
