FunctionBestFitFrequency

Library "FunctionBestFitFrequency"
TODO: add library description here

array_moving_average(sample, length, ommit_initial, fillna) Moving Average values for selected data.
Parameters:

• sample: float array, sample data values.
  
• length: int, length to smooth the data.
  
• ommit_initial: bool, default=true, ommit values at the start of the data under the length.
  
• fillna: string, default='na', options='na', '0', 'avg'

Returns: float array
errors:
length > sample size "Canot call array methods when id of array is na."

best_fit_frequency(sample, start, end) Search a frequency range for the fairest moving average frequency.
Parameters:

• sample: float array, sample data to based the moving averages.
  
• start: int lowest frequency.
  
• end: int highest frequency.

Returns: tuple with (int frequency, float percentage)