numeric — replace the numeric module of CodeSkulptor

numeric (June 16, 2014)

Replace the numeric module of CodeSkulptor.

Piece of SimpleGUICS2Pygame. https://bitbucket.org/OPiMedia/simpleguics2pygame

GPLv3 — Copyright (C) 2013, 2014 Olivier Pirson http://www.opimedia.be/

class SimpleGUICS2Pygame.numeric.Matrix(data, _copy=True)[source]

Matrix (m x n).

See http://en.wikipedia.org/wiki/Matrix_%28mathematics%29 .

__add__(other)[source]

To a matrix (m x n) return the matrix plus other.

Parameters:other – Matrix (m x n)
Returns:Matrix (m x n)
__getitem__(i_j)[source]

Returns the value of the (m x n) matrix at row i and column j.

Parameters:i_j – (0 <= int < m, 0 <= int < n) or [0 <= int < m, 0 <= int < n]
Returns:float
__init__(data, _copy=True)[source]

Create a matrix with the 2-dimensional data.

If not _copy then data is directly used without copy. In this case, data must be a correct list of list of float. (Option not available in SimpleGUI of CodeSkulptor.)

Parameters:
  • data – (not empty tuple or list) of (same size tuple or list) of (int or float)
  • _copy – bool
__mul__(other)[source]

To a matrix (m x k) return the matrix multiply by other.

Parameters:other – Matrix (k x n)
Returns:Matrix (m x n)
__setitem__(i_j, value)[source]

Change the value of the element at row i and column j, to the (m x n) matrix.

Parameters:
  • i_j – (0 <= int < m, 0 <= int < n) or [0 <= int < m, 0 <= int < n]
  • value – int or float
__str__()[source]

Returns the string representation of the matrix.

Returns:string
__sub__(other)[source]

To a matrix (m x n) return the matrix minus other.

Parameters:other – Matrix (m x n)
Returns:Matrix (m x n)
_is_identity(epsilon=2.220446049250313e-16)[source]

If the matrix is an identity matrix then return True, else return False.

(Not available in SimpleGUI of CodeSkulptor.)

Parameters:epsilon – 0 <= float < 1
Returns:bool
_is_zero(epsilon=2.220446049250313e-16)[source]

If the matrix is a zeros matrix then return True, else return False.

(Not available in SimpleGUI of CodeSkulptor.)

Parameters:epsilon – 0 <= float < 1
Returns:bool
_nb_columns()[source]

Return n for a (m x n) matrix.

(Not available in SimpleGUI of CodeSkulptor.)

Returns:int >= 1
_nb_lines()[source]

Return m to a (m x n) matrix.

(Not available in SimpleGUI of CodeSkulptor.)

Returns:int >= 1
abs()[source]

To a matrix (m x n) return the matrix with each element is the absolute value.

Returns:Matrix (m x n)
copy()[source]

Return a copy of the matrix (m x n).

Returns:Matrix (m x n)
getcol(j)[source]

Returns the (1 x m) matrix that is a copy of column j of the (m x n) matrix.

Parameters:j – 0 <= int < n
Returns:Matrix (1 x m)
getrow(i)[source]

Returns the (1 x n) matrix that is a copy of row i of the (m x n) matrix.

Parameters:i – 0 <= int < m
Returns:Matrix (1 x n)
inverse(_epsilon=2.220446049250313e-16)[source]

If the square matrix (n x n) is inversible then return the inverse, else raise an ValueError exception.

Algorithm used: Gaussian elimination. See http://en.wikipedia.org/wiki/Gaussian_elimination .

Parameters:_epsilon – 0 <= float < 1 (Option not available in SimpleGUI of CodeSkulptor.)
Returns:Matrix (n x n)
Raise:ValueError if the matrix is not inversible
scale(factor)[source]

To a matrix (m x n) return the matrix with each element multiply by factor.

Parameters:factor – int or float
Returns:Matrix (m x n)
shape()[source]

Return (m, n) to a matrix (m x n).

Returns:(int >= 1, int >= 1)
summation()[source]

Return the sum of all the elements of the matrix.

Returns:float
transpose()[source]

Return the transposition of the matrix (m x n).

Returns:Matrix (n x m)
__weakref__

list of weak references to the object (if defined)

SimpleGUICS2Pygame.numeric._zero(m, n)[source]

Return a (m x n) zeros matrix.

Parameters:
  • m – int >= 1
  • n – int >= 1
Returns:

Matrix (m x n)

SimpleGUICS2Pygame.numeric.identity(size)[source]

Return a (size x size) identity matrix.

Parameters:size – int >= 1
Returns:Matrix (size x size)

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