pygeomath

array(sequence, typecode=None, copy=1, savespace=0) will return a new array formed from the given (potentially nested) sequence with type given by typecode. If no typecode is given, then the type will be determined as the minimum type required to hold the objects in sequence. If copy is zero and sequence is already an array, a reference will be returned. If savespace is nonzero, the new array will maintain its precision in operations.

reshape(a, (d1, d2, ..., dn)). Change the shape of a to be an n-dimensional array with dimensions given by d1...dn. Note: the size specified for the new array must be exactly equal to the size of the old one or an error will occur.

The cross product between two vectors.

arange(start, stop=None, step=1, typecode=None)

Just like range() except it returns an array whose type can be specified by the keyword argument typecode.

return a 3 element array representing the origin centered projection of the given point to the plane parallel with the XY plane at unit distance

the return the roots of the quadratic equation with the three given values as coefficients - i.e. a*x**2 + b&x +c

return the crossproduct of the vectors connecting the 1st given position with that of the 2nd and 3rd given positions

return a 4 element array as a homogenous coordinate of the given 3 element vector

return the crossratio of 4 ordered points

asarray(a,typecode=None) returns a as a NumPy array. Unlike array(), no copy is performed if a is already an array.

return the modulus (absolute value) of the given complex number

return the square of the modulus of the given complex number

eigenvectors(a) returns u,v where u is the eigenvalues and v is a matrix of eigenvectors with vector v[i] corresponds to eigenvalue u[i]. Satisfies the equation dot(a, v[i]) = u[i]*v[i]

transpose(a, axes=None) returns array with dimensions permuted according to axes. If axes is None (default) returns array with dimensions reversed.

dot(a,b) returns matrix-multiplication between a and b. The product-sum is over the last dimension of a and the second-to-last dimension of b.

dot(a,b) returns matrix-multiplication between a and b. The product-sum is over the last dimension of a and the second-to-last dimension of b.

trace(a,offset=0, axis1=0, axis2=1) returns the sum along diagonals (defined by the last two dimenions) of the array.

ones(shape, typecode=Int, savespace=0) returns an array of the given dimensions which is initialized to all ones.

identity(n) returns the identity matrix of shape n x n.

Get the shape of sequence a