# -*- coding: utf-8 -*-
"""
@Author:
| Samuel Frederick, NSSC Contractor (ORAU)
| U.S. EPA / ORD / CEMM / AMCD / SFSB
Created:
Fri Sep 10 09:11:01 2021
Last Updated:
Fri Sep 10 09:11:01 2021
"""
import pandas as pd
import numpy as np
[docs]def convert_temp(data, from_unit='F', to_unit='C', **kwargs):
"""Convert temperature from one unit basis to another.
Can convert from Fahrenheit to Celsius or vice versa.
Args:
data (pandas DataFrame or pandas Series): DESCRIPTION.
from_unit (str, optional): DESCRIPTION. Defaults to 'F'.
to_unit (str, optional): DESCRIPTION. Defaults to 'C'.
Raises:
KeyError: DESCRIPTION.
AttributeError: DESCRIPTION.
Returns:
converted_data (pandas DataFrame): DESCRIPTION.
"""
verbose = kwargs.get('verbose', True)
# # Convert input type to pandas dataframe
# data_type = type(data)
# if data_type is not pd.core.frame.DataFrame:
# data = pd.Series(data).to_frame(name='Temp_Value')
# # Passed datatype is pandas dataframe but expected header not found
# if 'Temp_Value' not in data:
# raise KeyError('Column header "Temp_Value" not in passed dataframe.')
if from_unit == 'F' and to_unit == 'C':
if verbose:
print('....converting from Fahrenheit to Celsius')
try:
converted_data = _f_to_c(data)
except TypeError as e:
print(e)
elif from_unit == 'C' and to_unit == 'F':
if verbose:
print('....converting from Celsius to Fahrenheit')
try:
converted_data = _c_to_f(data)
except TypeError as e:
print(e)
else:
raise AttributeError('Invalid conversion. Arguments for "from_unit"'
' and "to_unit" must be either "C" or "F" and'
' should not be the same unit.')
return converted_data
def _f_to_c(x):
func = lambda x: (x - 32.0) / 1.8
try:
val = func(x)
except TypeError as e:
val = np.nan
return val
def _c_to_f(x):
func = lambda x: 1.8*(x) + 32.0
try:
val = func(x)
except TypeError as e:
val = np.nan
return val