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July 8, 2019 20:19
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import numpy as np # Importamos numpy con bajo el alias | |
a = np.arange(10) # Creo un rango del 1 al 9 | |
print(a + 10) # [10 11 12 13 14 15 16 17 18 19] | |
a = np.eye(3) # Creo una matriz diagonal de 3x3 | |
b = np.eye(3, k=-1) # Creo una matriz diagonal de 3x3 | |
print(a + b) | |
# [[1. 0. 0.] | |
# [1. 1. 0.] | |
# [0. 1. 1.]] | |
print(a - b) | |
# [[ 1. 0. 0.] | |
# [-1. 1. 0.] | |
# [ 0. -1. 1.]] | |
a = np.full((3, 2), 5) # Array de 3x2 de numeros 5 | |
b = np.full((2, 3), 5) # Array de 2x3 de numeros 5 | |
print(a @ b) # Producto punto de las dos Arrays | |
print(a.dot(b)) # Producto punto de las dos Arrays | |
# [[50 50 50] | |
# [50 50 50] | |
# [50 50 50]] | |
a = np.ones((3, 3)) # Array de unos de 3x3 | |
a *= 5 # Operadores de asignacion | |
print(a) | |
# [[5. 5. 5.] | |
# [5. 5. 5.] | |
# [5. 5. 5.]] | |
a = np.random.random(200) # Array de valores aleatoreos uniformes | |
print(a.sum()) # Sumatoria de los valores | |
print(a.min()) # Valor minimo de mi Array | |
print(a.max()) # Valor maximo de mi Array | |
a = np.array([[2, 5], [4, 7]]) # Array de valores aleatorios | |
print(np.sin(a)) # Seno | |
print(np.cos(a)) # Coseno | |
print(np.tan(a)) # Tangente | |
print(np.arccos(a)) # Arco Coseno | |
print(np.arcsin(a)) # Arco Seno | |
print(np.arctan(a)) # Arco Tangente | |
print(np.exp(a)) # Exponencial | |
print(np.tanh(a)) # Tangente Hiperbolica | |
print(np.arctanh(a)) # Arco Tangente Hiperbolica | |
# Operaciones Logicas | |
a = np.random.random((3, 2)) | |
print(a > 0.5) | |
# [[False False] | |
# [False True] | |
# [False True]] | |
# Operaciones de Bits | |
a = np.array([3, 2]) | |
print(~a) | |
# [-4 -3] | |
# Operaciones con numeros imaginarios | |
a = np.random.random((3, 2)) | |
a = a * 1j | |
print(a.dtype) | |
print(a) | |
# complex128 | |
# [[0.+0.95952142j 0.+0.84571813j] | |
# [0.+0.98370541j 0.+0.65914453j] | |
# [0.+0.92270371j 0.+0.60638011j]] | |
# Sumar Columnas | |
a = np.random.random((3, 2)) | |
print(a.sum(axis=1)) | |
# [0.56850895 0.51092 0.82053035] |
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