emel

v0.3.0

emel v0.3.0 Emel.Math.Geometry View Source

Link to this section Summary

Functions

centroid(points)

The arithmetic mean position of the points

dot_product(x, y)

The sum of the products of the corresponding entries of x and y

euclidean_distance(x, y)

The ordinary straight-line distance between two points in Euclidean space

magnitude(vector)

The euclidean distance between the initial and terminal point of the vector

nearest_neighbor(point, neighbors)

The neighbor that is closest to the given point

Link to this section Functions

Link to this function centroid(points) View Source

The arithmetic mean position of the points.

Examples 

iex> Emel.Math.Geometry.centroid([[0.0, 0.0], [0.0, 1.0], [1.0, 0.0], [1.0, 1.0]])
[0.5, 0.5]
Link to this function dot_product(x, y) View Source

The sum of the products of the corresponding entries of x and y.

Examples 

iex> Emel.Math.Geometry.dot_product([-4.0, -9.0], [-1.0, 2.0])
-14.0

iex> Emel.Math.Geometry.dot_product([1.0, 2.0, 3.0], [4.0, -5.0, 6.0])
12.0
Link to this function euclidean_distance(x, y) View Source

The ordinary straight-line distance between two points in Euclidean space.

Examples 

iex> Emel.Math.Geometry.euclidean_distance([2.0, -1.0], [-2.0, 2.0])
5.0

iex> Emel.Math.Geometry.euclidean_distance([0.0, 3.0, 4.0, 5.0], [7.0, 6.0, 3.0, -1.0])
9.746794344808963
Link to this function magnitude(vector) View Source

The euclidean distance between the initial and terminal point of the vector.

Examples 

iex> Emel.Math.Geometry.magnitude([0.0, 2.0])
2.0

iex> Emel.Math.Geometry.magnitude([6.0, 8.0])
10.0

iex> Emel.Math.Geometry.magnitude([1.0, -2.0, 3.0])
3.7416573867739413
Link to this function nearest_neighbor(point, neighbors) View Source

The neighbor that is closest to the given point.

Examples 

iex> Emel.Math.Geometry.nearest_neighbor([0.9, 0.0], [[0.0, 0.0], [0.0, 0.1], [1.0, 0.0], [1.0, 1.0]])
[1.0, 0.0]