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numerix

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A collection of useful mathematical functions in Elixir with a slant towards statistics, linear algebra and machine learning

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numerix lib window.ex
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lib/window.ex 

defmodule Numerix.Window do

  @moduledoc """

  Functions used to smoothly bring a sampled signal down

  to zero at the edges of the sampled region.

  https://en.wikipedia.org/wiki/Window_function  

  """



  @doc """

  A bell curve function calculated based on the

  width (distance) and sigma (standard deviation).

  """

  @spec gaussian(number, number) :: float

  def gaussian(width, sigma \\ 1.0) do

    :math.exp(-0.5 * :math.pow(width / sigma, 2))

  end



end