[docs]class Factor:
"""Factor
The Factor class holds information about an individual Factor in
Stat-Ease 360. Instances of this class are typically created by
:func:`statease.client.SEClient.get_factor`
Attributes:
name (str): the name of the factor
units (str): the units of the factor
values (tuple): the values of the factor, in run order
low (str, **read only**): the actual low that corresponds to the *coded* low (this is usually, but not necessarily, the minimum observed value)
high (str, **read only**): the actual high that corresponds to the *coded* high (this is usually, but not necessarily, the maximum observed value)
coded_low (str, **read only**): the coded low value, typically -1 or 0
coded_high (str, **read only**): the coded high value, typically 1
"""
def __init__(self, client, name):
self._client = client
self._name = name
result = self._client.send_payload({
"method": "GET",
"uri": "design/factor/" + self._name,
})
# overwrite the user entered name with the properly capitalized one
self._name = result['payload'].get('name', self.name)
self._variable_id = result['payload'].get('variable_id',None)
self._units = result['payload'].get('units', '')
self._values = tuple(result['payload'].get('values', []))
self._coded_low = result['payload'].get('coded_low', -1)
self._coded_high = result['payload'].get('coded_high', 1)
self._actual_low = result['payload'].get('actual_low', -1)
self._actual_high = result['payload'].get('actual_high', 1)
self._is_categorical = result['payload'].get('is_categorical',None)
self._coded_values = tuple(result['payload'].get('coded_values', []))
if (self._is_categorical):
# Convert inner nested lists to tuples for efficiency
self._coded_values = tuple([ tuple(sublist) if sublist is not None else None for sublist in self._coded_values])
def __str__(self):
return 'name: "{}"\nunits: "{}"\nvariable_id:"{}"\ncoded low: {} <-> {}\ncoded high: {} <-> {}\nis_categorical: {}'.format(
self._name,
self._variable_id,
self._units,
self._actual_low,
self._coded_low,
self._actual_high,
self._coded_high,
self._is_categorical
)
@property
def name(self):
return self._name
@property
def variable_id(self):
return self._variable_id
@property
def units(self):
return self._units
@property
def coded_high(self):
return self._coded_high
@property
def coded_low(self):
return self._coded_low
@property
def low(self):
return self._actual_low
@property
def high(self):
return self._actual_high
@property
def actual_low(self):
return self._actual_low
@property
def actual_high(self):
return self._actual_high
@property
def values(self):
"""Get or set the factor values. When setting the factor values, you may use
either a list or a dictionary. If fewer values are assigned than there are rows
in the design, they will be filled in starting with first row. If a dictionary
is used, it must use integers as keys, and it will fill factor values in rows
indexed by the dictionary keys. The indices are 0-based, so the first row is
index 0, the second index 1, and so on.
:Example:
>>> # sets the first 4 rows to a list of values
>>> factor.values = [.1, .2, .3, .4]
>>> # sets the 7th through 10th rows to specific values
>>> factor.values = { 6: .1, 7: .2, 8: .3, 9: .4 }
>>> # sets the 6th run to a specific value
>>> factor.values = { 5: .8 }
"""
return self._values
@values.setter
def values(self, factor_values):
result = self.post("set", {"factor_values": factor_values })
self._values = tuple(result['payload']['values'])
self._coded_values = tuple(result['payload']['coded_values'])
self._coded_high = result['payload'].get('coded_high', 1)
self._coded_low = result['payload'].get('coded_low', -1)
self._actual_low = result['payload'].get('actual_low', -1)
self._actual_high = result['payload'].get('actual_high', 1)
@property
def coded_values(self):
"""Get the coded factor values in the current coding.
:Example:
>>> # get a list of the coded values
>>> xc = factor.coded_values
"""
return self._coded_values
[docs] def is_categorical(self):
"""Test for categorical factor type.
:Example:
>>> # get a list of the coded values
>>> # values if the factor is categorical
>>> x = []
>>> if (factor.is_categorical):
>>> x = factor.coded_values
>>> else: # Factor is not categorical
>>> x = factor.values
"""
return self._is_categorical
def post(self, endpoint, payload):
return self._client.send_payload({
"method": "POST",
"uri": "design/factor/{}/{}".format(self._name, endpoint),
**payload,
})
