numpy 요약

https://docs.scipy.org/doc/numpy/user/quickstart.html

import numpy as np

a = np.array([1,2,3,4,5,6,7])

alist = list(a)

print( a.ndim )

print( a.shape )

print( a.size )

b = np.arange(x1,x2,dx)

b.reshape(ny, nx)

np.zero( (ny,nx) )

np.ones( (ny,nx) )

np.empty( (ny,nx) )

np.linspace( x1,x2,numpts )

h = np.hstack( (a,a,a,...) )

v = np.vstack( (a,a,a,...) )

# subset

c = d[ 1:5, 2:4, ...]

a.ravel()  # flattened array

a.T # transpose

view, shallow/deep copy