Examples¶

indices¶

[2]:

import numpy as np
from spector import indices
ind = indices([0, 2])
ind

[2]:

indices([2 0])

[3]:

np.array(ind)

[3]:

array([2, 0])

[4]:

1 in ind

[4]:

False

[5]:

ind.add(1)

[5]:

True

[6]:

ind.todense()

[6]:

array([ True,  True,  True])

[7]:

indices.fromdense([True, False, True])

[7]:

indices([2 0])

[8]:

from spector import vector
vec = vector({0: 1.0, 2: 2.0, 4: 1.0})
vec

[8]:

vector([4 0 2], [1. 1. 2.])

[9]:

np.array(vec)

[9]:

array([1., 1., 2.])

[10]:

vec[2] += 1.0
vec[2]

[10]:

3.0

[11]:

vec.sum()

[11]:

5.0

[12]:

vec.todense()

[12]:

array([1., 0., 3., 0., 1.])

[13]:

vector.fromdense([1, 0, 2, 0, 1])

[13]:

vector([4 2 0], [1. 2. 1.])

[14]:

from spector import matrix
mat = matrix({0: {1: 2.0}})
mat

[14]:

matrix(spector.vector.vector, {0: vector([1], [2.])})

[15]:

mat.row, mat.col, mat.data

[15]:

(array([0]), array([1]), array([2.]))