{"id":10519,"date":"2013-07-24T11:03:00","date_gmt":"2013-07-24T11:03:00","guid":{"rendered":"http:\/\/melotopia.net\/b\/?p=10519"},"modified":"2013-07-24T11:03:00","modified_gmt":"2013-07-24T11:03:00","slug":"%ed%8c%8c%ec%9d%b4%ec%8d%ac-%ea%b8%b0%ec%b4%882","status":"publish","type":"post","link":"http:\/\/melotopia.net\/b\/?p=10519","title":{"rendered":"\ud30c\uc774\uc36c \uae30\ucd082"},"content":{"rendered":"
\n
\n

\n \ud30c\uc774\uc36c \uae30\ucd08 \uac15\uc88c \ub450\ubc88\uc9f8.
\n \n<\/p>\n

\n
\n
\n\"\"
\n lecture2.py
\n <\/a>
\n<\/span>\n<\/p>\n

\n\n<\/p>\n

\n # -*- coding:utf-8 -*-
\n
\n # Python lecture 2
\n
\n # keeHwan Nam, Dept. of physics, KAIST, 2013.<\/p>\n

# scipy \/ numpy \uc0ac\uc6a9\ud558\uae30
\n
\n ”’
\n
\n \ubb3c\ub9ac\ud559, \uc218\ud559, \uacf5\ud559 \ub4f1 \uc774\uacf5\uacc4 \uc804\ubc18\uc5d0\uc11c \ud30c\uc774\uc36c\uc744 \uc0ac\uc6a9\ud558\ub294 \uc0ac\ub78c\ub4e4 \uc218\uac00 \ub298\uc5b4\ub098\uba74\uc11c \uc774\uacf5\uacc4\uc5d0\uc11c \uc0ac\uc6a9\ud558\ub294 \uc218\ud559 \ud568\uc218\ub4e4\uc5d0 \ub300\ud55c \uc694\uad6c\uac00 \ub298\uc5b4\ub0ac\uace0, \ub530\ub77c\uc11c \uc0ac\ub78c\ub4e4\uc740 \uadf8\ub7f0 \uc218\ud559 \ud568\uc218\ub97c \ud30c\uc774\uc36c \ubaa8\ub4c8\ub85c \ub9cc\ub4e4\uc5b4\uc11c \uc81c\uacf5\ud55c\ub2e4. \uac70\uc758 \ub300\ubd80\ubd84\uc758 \uc774\uacf5\uacc4\uc6a9 \ubaa8\ub4c8\ub4e4\uc774 \uacf5\uc9dc\ub85c \uc81c\uacf5\ub418\uba70, \uc2ec\uc9c0\uc5b4 \uc18c\uc2a4\ub3c4 \uacf5\uac1c\ub418\uc5b4 \uc788\ub294 \uc624\ud508\uc18c\uc2a4\ub85c \uc81c\uacf5\ub41c\ub2e4.
\n
\n \uc774 \uc0ac\ub78c\ub4e4\uc774 \uc5b4\ub5bb\uac8c \uad6c\ud604\ud588\ub294\uc9c0 \uc54c\uc544\ubcf4\uace0 \uc2f6\uc744 \ub54c, \uc9c1\uc811 \uc18c\uc2a4\ub97c \uc5f4\uc5b4\uc11c \uc0b4\ud3b4\ubcfc \uc218\ub3c4 \uc788\uace0, \ub9cc\uc57d \ubb54\uac00 \uac1c\uc120\ud560 \ubd80\ubd84\uc774 \uc788\ub2e4\uba74 \uc9c1\uc811 \uace0\uccd0\uc11c \ud22c\uace0\ud560 \uc218\ub3c4 \uc788\ub2e4. \ubb3c\ub860 \uc774\ub7f0\uac70 \ub9cc\ub4dc\ub294 \uc0ac\ub78c\ub4e4\uc774 \uace0\uc218\ub4e4\uc774\ub77c \uc6cc\ub099\uc5d0 \uc798 \ub9cc\ub4e4\uc5b4\uc838 \uc788\uae30 \ub54c\ubb38\uc5d0 \ub0b4\uac00 \uc190\ub308\ub9cc\ud55c \ubd80\ubd84\uc740 \uc5c6\uc9c0\ub9cc, \uac00\ub054 \ubb54\uac00 \uace0\uccd0\uc57c \ud560 \ubd80\ubd84\uc774 \uc788\uc744\uc9c0\ub3c4 \ubaa8\ub974\uc9c0 \uc54a\uc740\uac00.
\n
\n \uc5b4\uca0c\ub4e0, \uadf8 \uc548\uc5d0 \uc5b4\ub5bb\uac8c \uad6c\ud604\ub418\uc5c8\ub294\uc9c0\ub294 \ubaa8\ub974\ub354\ub77c\ub3c4, \uc774\ub7f0 \ubaa8\ub4c8\ub4e4\uc744 \ud544\uc694\ud560 \ub54c \uac00\uc838\ub2e4 \uc4f0\ub294 \uac83\uc740 \uc911\uc694\ud55c \uc77c\uc774\ub2e4. \uadf8\ub798\uc11c \uc18c\uac1c\ud558\ub294 \ubaa8\ub4c8\uc774 scipy\uc640 numpy\uc774\ub2e4.<\/p>\n

numpy\ub294 \uc218\uce58\ud574\uc11d\uc744 \ud30c\uc774\uc36c\uc73c\ub85c \ud558\uae30 \uc704\ud574 \ud544\uc694\ud55c \uac70\uc758 \ubaa8\ub4e0 \uac83\uc774 \ub4e4\uc5b4 \uc788\ub294 \ud328\ud0a4\uc9c0\uc774\ub2e4.
\n
\n \uacf5\uc2dd \ud648\ud398\uc774\uc9c0: http:\/\/www.numpy.org\/<\/p>\n

scipy\ub294 \uc774\uacf5\uacc4\uc5d0\uc11c \uc4f0\ub294 \uc218\ub9ce\uc740 \ud568\uc218\ub4e4\uc774 \ub9ce\uc774 \ub4e4\uc5b4 \uc788\ub294 \ud328\ud0a4\uc9c0\uc774\ub2e4.
\n
\n \uacf5\uc2dd \ud648\ud398\uc774\uc9c0: http:\/\/www.scipy.org\/<\/p>\n

\uc5b4\uca0c\uac70\ub098 \ub458 \ub2e4 \ud544\uc694\ud558\ubbc0\ub85c \ub458 \ub2e4 \uc124\uce58\ud558\ub3c4\ub85d \ud558\uc790.<\/p>\n

\uc124\uce58\ud558\ub2e4\ubcf4\uba74, \uc6b4\uc601\uccb4\uc81c \ubc84\uc804, \ud2b9\ud788 \uc708\ub3c4\uc6b0\uc988\uc5d0\uc11c \uc124\uce58\ud558\ub294 \uacbd\uc6b0 32\ube44\ud2b8\/64\ube44\ud2b8 \ubb38\uc81c\uc640 \ud30c\uc774\uc36c2.7\uc774\ub0d0 \ud30c\uc774\uc36c3.3\uc774\ub0d0 \ub9e4\uc6b0 \uace8\uce58\uc544\ud504\uac8c \ub2e4\uac00\uc628\ub2e4. \uc2e4\uc81c\ub85c \ub2f9\uc2e0\uc774 \uc774 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\ub824\uba74 \ub098\ub3c4 \uc798 \uc54c \uc218 \uc5c6\ub294 \uc0bd\uc9c8\uc744 \ud574\uc57c \ud558\ub294\ub370, \uadf8 \ubaa8\ub4e0 \uc0bd\uc9c8\uc744 \ubbf8\ub9ac \ud574\ub450\uc2e0 \uc131\uc778\uc774 \uacc4\uc154\uc11c \uc774 \uc6b0\uc8fc\ub294 \uc0b4\ub9cc\ud558\ub2e4\ub294 \uc0ac\uc2e4\uc744 \uc54c \uc218 \uc788\ub2e4.<\/p>\n

http:\/\/www.lfd.uci.edu\/~gohlke\/pythonlibs\/<\/p>\n

\uc704\uc758 \ud648\ud398\uc774\uc9c0\uc5d0\uc11c \ud544\uc694\ud55c \ud328\ud0a4\uc9c0\ub4e4\uc744 \ubc1b\uc544\uc11c \uc124\uce58\ud558\uae30 \uc804\uc5d0 \ud06c\ub9ac\uc2a4\ud1a0\ud504 \uace8\ucf00 \ub2d8\uc5d0\uac8c \uac10\uc0ac\uc758 \uc778\uc0ac\ub97c \ub9c8\uc74c\uc18d\uc73c\ub85c \ud558\ub3c4\ub85d \ud558\uc790.<\/p>\n

http:\/\/wiki.scipy.org\/Tentative_NumPy_Tutorial<\/p>\n

numpy\uc640 scipy\uc758 \uacbd\uc6b0, \ub9e4\uc6b0 \uc124\uba85\uc774 \uc798 \ub418\uc5b4 \uc788\ub294 \uc790\uc2b5\uc11c(Tutorial)\ub97c \uc81c\uacf5\ud55c\ub2e4. \uc601\uc5b4\ub97c \uc798 \ubab0\ub77c\ub3c4, \uac70\uae30\uc5d0 \ub098\uc640 \uc788\ub294 \uc608\uc81c\ub4e4\ub9cc \ud55c\ubc88\uc529 \ub2e4 \uc2e4\ud589\uc2dc\ucf1c \ubcf4\uba74 \ub300\ucda9 \ubb50\uac00 \uc5b4\ub5bb\uac8c \ub3cc\uc544\uac00\ub294\uc9c0 \uc54c \uc218 \uc788\uc744 \uac83\uc774\ub2e4.<\/p>\n

”’<\/p>\n

import numpy as np<\/p>\n

# numpy\ub294 \ub300\uccb4\ub85c as np\ub85c \uc904\uc5ec\uc11c \ubd88\ub7ec\uc628\ub2e4.
\n
\n # \uc5b4\uca0c\uac70\ub098 \uc704\uc640 \uac19\uc774 \ud558\uba74 np.\uc73c\ub85c \uc2dc\uc791\ud558\ub294 \ud568\uc218\ub4e4\uc744 \ubaa8\ub450 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub2e4. np.\uc870\ucc28 \uc0ac\uc6a9\ud558\uae30 \uadc0\ucc2e\ub2e4\uba74<\/p>\n

from numpy import *<\/p>\n

# \ubc30\uc6e0\ub4ef\uc774, \uc704\uc640 \uac19\uc774 \ubd88\ub7ec\uc624\ub3c4\ub85d \ud558\uc790. \ub2e4\ub9cc, \ud30c\uc774\uc36c \ub0b4\uc7a5\ud568\uc218\uc640 numpy\uc758 \ud568\uc218\ub4e4 \uc911 \uba87\uac1c\uac00 \uc774\ub984\uc774 \uacb9\uce58\uae34 \ud55c\ub2e4. \ud639\uc2dc \uadf8\ub7f0 \ud568\uc218\ub4e4\uc744 \uad6c\ubd84\ud574\uc11c \uc0ac\uc6a9\ud574\uc57c \ud558\ub294 \uacbd\uc6b0\ub77c\uba74 \uc8fc\uc758\ud558\ub3c4\ub85d \ud558\uc790.<\/p>\n

”’
\n
\n http:\/\/docs.scipy.org\/doc\/numpy\/reference\/
\n
\n http:\/\/docs.scipy.org\/doc\/scipy\/reference\/
\n
\n \uc704\uc758 \uc8fc\uc18c\uc5d0 \ub4e4\uc5b4\uac00 \ubcf4\uba74, numpy\uc640 scipy\uc5d0\uc11c \uc81c\uacf5\ud558\ub294 \uc5ec\ub7ec \uae30\ub2a5\ub4e4\uc5d0 \uad00\ud55c \uc124\uba85\uc774 \uc801\ud600 \uc788\ub2e4.
\n
\n \ucb49 \uc0b4\ud3b4\ubcf4\ub2e4\uac00, ‘\uc774\uac70\ub2e4!’ \uc2f6\uc73c\uba74 \ud074\ub9ad\ud574\uc11c \uc5f4\uc5b4\ubcf4\uace0 \uadf8 \uc548\uc5d0 \uc6d0\ud558\ub294 \ud568\uc218\ub97c \ucc3e\uc544\uc11c \uc0ac\uc6a9\ud558\uba74 \ub41c\ub2e4.
\n
\n \ubabb\ub4e4\uc5b4\ubcf8\uac8c \ub9ce\uc744 \uc21c \uc788\uc5b4\ub3c4, \ud544\uc694\ud55c\uac8c \uc5c6\ub294 \uacbd\uc6b0\ub294 \uac70\uc758 \uc5c6\uc744 \uac83\uc774\ub2e4.
\n
\n ”’<\/p>\n

# \uc608\ub97c \ub4e4\uc5b4, \uae08\uc735\uc744 \ud558\ub2e4 \ubcf4\uba74 \ub9cc\ub0a0 \uc218 \uc788\ub2e4\ub294 \ud604\uc7ac \uac00\uce58\uc5d0 \uad00\ud55c \ud568\uc218\uac00 \uc788\ub2e4. fv()\ub77c\uace0 \ud55c\ub2e4.<\/p>\n

print numpy.pv(12., 2., 1)<\/p>\n

# \uc704\uc640 \uac19\uc774 \uc2e4\ud589\uc2dc\ud0a4\uba74 -0.082840236686390539 \uc774\ub77c\ub294 \uac12\uc744 \uc5bb\uc744 \uc218 \uc788\uc744 \uac83\uc774\ub2e4.<\/p>\n

# \uadf8\ub9ac\uace0 numpy\uc758 \ubaa8\ub4e0 \ud568\uc218\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uc785\ub825\ub3c4 \ucc98\ub9ac\ud574 \uc900\ub2e4.<\/p>\n

print numpy.pv([12.,3], [2.,4], [1,4])<\/p>\n

# \uc55e\uc5d0\uc11c\ub294 \uc22b\uc790 \ud55c\uac1c\uc529 \uc785\ub825\ud588\uc9c0\ub9cc, \uc774\ubc88\uc5d4 \uc5ec\ub7ec\uac1c\uc758 \ub9ac\uc2a4\ud2b8\ub97c \uc785\ub825\ud588\ub2e4. \uc774\ub807\uac8c \ub418\uba74, “\uc54c\uc544\uc11c, \ucc99\ucc99” \uccab\ubc88\uc9f8 \uac12\ub07c\ub9ac \ub300\uc785\ud55c \ud568\uc218\uac12, \ub450\ubc88\uc9f8 \uac12\ub07c\ub9ac \ub300\uc785\ud55c \ud568\uc218\uac12\uc744 \ucd9c\ub825\ud574\uc900\ub2e4. \uc989, \uacb0\uacfc\ub294 array([-0.08284024, -1.328125 ])\uc774 \ub41c\ub2e4.<\/p>\n

# \uc544\uc8fc \ub9ce\uc774 \uc0ac\uc6a9\ub418\ub294 \ubaa8\ub4c8 \uc911, \uace0\uc18d \ud478\ub9ac\uc5d0 \ubcc0\ud658(FFT) \ubaa8\ub4c8\uc774 \uc788\uc744 \uac83\uc774\ub2e4. \uc774 \ubaa8\ub4c8\uc758 \uacbd\uc6b0, \uc544\ubb34 \uc0dd\uac01 \uc5c6\uc774 import numpy \ub77c\uace0 \ud558\uba74 \uc548\ub41c\ub2e4. \uc989,<\/p>\n

numpy.fft.fft(array[1,2,3,4])<\/p>\n

# \uc704\uc640 \uac19\uc774 \uc2e4\ud589\uc2dc\ud0a4\uba74 \uc548\ub41c\ub2e4\ub294 \ub73b\uc774\ub2e4.<\/p>\n

# \uc774 \ubaa8\ub4c8\uc740 numpy\uac00 \uc544\ub2c8\ub77c numpy.fft\ub97c \ubd88\ub7ec\uc640\uc57c \ud55c\ub2e4. \uc774\uac83\uc740 \uc2e4\uc81c\ub85c \ub514\ub809\ud1a0\ub9ac\ub97c \ucc3e\uc544\uac00 \ubcf4\uba74, fft\ub294 \ub369\uc5b4\ub9ac\uac00 \ud06c\uae30 \ub54c\ubb38\uc5d0 \ubcc4\ub3c4\uc758 \ub514\ub809\ud1a0\ub9ac\uc5d0 \ub098\ub204\uc5b4\uc838 \ub4e4\uc5b4\uac00 \uc788\ub2e4. \uc989, numpy\uac00 \uc124\uce58\ub41c \ub514\ub809\ud1a0\ub9ac \ubc11\uc5d0 fft\ub77c\ub294 \ub514\ub809\ud1a0\ub9ac\uac00 \ub530\ub85c \uc788\uc5b4\uc11c, \uadf8 \ubc11\uc5d0 \uc788\ub294 \ud30c\uc77c\ub4e4\uc744 \ubd88\ub7ec\uc640\uc57c \ud55c\ub2e4\ub294 \ub73b\uc774\ub2e4. \ub530\ub77c\uc11c numpy\ub77c\uace0\ub9cc \ud558\uba74 \uc548\ub41c\ub2e4.<\/p>\n

import numpy.fft
\n
\n import numpy.fft as npfft<\/p>\n

# \uc798 \ubaa8\ub974\uaca0\ub2e4\uba74, fft\uac19\uc740 \ubaa8\ub4c8\ub4e4\uc740 \uc704\uc640 \uac19\uc774(\ub458 \uc911 \ud558\ub098\ub85c) \ubd88\ub7ec\uc640\uc11c \uc368\uc57c \ud55c\ub2e4\ub294 \uc0ac\uc2e4\ub9cc \uae30\uc5b5\ud558\uba74 \ub41c\ub2e4.
\n
\n # \uc774\ub7f0 \ubaa8\ub4c8\ub4e4\uc774 \uba87\uac1c(\uc740\uadfc\ud788 \ub9ce\uc774) \uc788\ub294\ub370, \uc704\uc758 reference\ub97c \uaf3c\uaf3c\ud788 \uc798 \uc77d\uc5b4\ubcf4\uba74 \uc5b4\ub5bb\uac8c \uc0ac\uc6a9\ud574\uc57c \ud558\ub294\uc9c0 \uc54c \uc218 \uc788\uc744 \uac83\uc774\ub2e4.<\/p>\n

# \uc774\ub7ec\ud55c \ub0b4\uc6a9\uc740 scipy\ub3c4 \ub9c8\ucc2c\uac00\uc9c0\uc774\ub2e4.<\/p>\n

import scipy<\/p>\n

# scipy\uc758 \uc0ac\uc6a9\uc740 \uc704\uc640 \uac19\uc774 \uc0ac\uc6a9\ud55c\ub2e4.<\/p>\n

# \ubca0\uc140 \ud568\uc218, \ub974\uc7a5\ub4dc\ub974 \ud568\uc218 \ub4f1 \ud2b9\ubcc4\ud55c \ud568\uc218\ub4e4\uc740 scipy.special\uc774\ub77c\ub294 \ubaa8\ub4c8\uc5d0 \ubcc4\ub3c4\ub85c \uc800\uc7a5\ub418\uc5b4 \uc788\ub2e4. \ub530\ub77c\uc11c \ubca0\uc140 \ud568\uc218\ub97c \ubd88\ub7ec\uc624\uace0 \uc2f6\ub2e4\uba74,<\/p>\n

import scipy.special<\/p>\n

# \uc704\uc640 \uac19\uc740 \ubc29\uc2dd\uc73c\ub85c \ubaa8\ub4c8\uc744 \ubd88\ub7ec\uc640\uc57c \ud55c\ub2e4.<\/p>\n

# \uadf8\ub807\uac8c \ub418\uba74, \uc774\uc81c 0\ucc28 1\uc885 \ubca0\uc140 \ud568\uc218\ub97c \ub2e4\uc74c\uacfc \uac19\uc774 \ubd88\ub7ec\uc62c \uc218 \uc788\ub2e4.<\/p>\n

print scipy.special.j0(0.5)<\/p>\n

# \uadf8 \uc678\uc5d0, \uc544\uc8fc \ub9ce\uc740 \ud568\uc218\ub4e4\uc774 \uc788\uc9c0\uba74 \uc5ec\uae30\uc11c \ubaa8\ub450 \uc18c\uac1c\ud558\ub294 \uac83\uc740 scipy \uc0ac\uc6a9\uc124\uba85\uc11c \ubc88\uc5ed\uacfc \uac19\uc740 \uc791\uc5c5\uc774\ubbc0\ub85c \uc0dd\ub7b5\ud558\ub3c4\ub85d \ud558\uaca0\ub2e4.<\/p>\n

\n
\n
\n\"\uc2e0\uace0\"
\n<\/a>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

\ud30c\uc774\uc36c \uae30\ucd08 \uac15\uc88c \ub450\ubc88\uc9f8. lecture2.py # -*- coding:utf-8 -*- # Python lecture 2 # keeHwan Nam, Dept. of physics, KAIST, 2013. # scipy \/ numpy \uc0ac\uc6a9\ud558\uae30 ”’ \ubb3c\ub9ac\ud559, \uc218\ud559, \uacf5\ud559 \ub4f1 \uc774\uacf5\uacc4 \uc804\ubc18\uc5d0\uc11c \ud30c\uc774\uc36c\uc744 \uc0ac\uc6a9\ud558\ub294 \uc0ac\ub78c\ub4e4 \uc218\uac00 \ub298\uc5b4\ub098\uba74\uc11c \uc774\uacf5\uacc4\uc5d0\uc11c \uc0ac\uc6a9\ud558\ub294 \uc218\ud559 \ud568\uc218\ub4e4\uc5d0 \ub300\ud55c \uc694\uad6c\uac00 \ub298\uc5b4\ub0ac\uace0, \ub530\ub77c\uc11c \uc0ac\ub78c\ub4e4\uc740 \uadf8\ub7f0 \uc218\ud559 \ud568\uc218\ub97c \ud30c\uc774\uc36c \ubaa8\ub4c8\ub85c \ub9cc\ub4e4\uc5b4\uc11c \uc81c\uacf5\ud55c\ub2e4. \uac70\uc758 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[12],"tags":[],"class_list":["post-10519","post","type-post","status-publish","format-standard","hentry","category-12"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8o6gA-2JF","jetpack-related-posts":[],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/10519","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10519"}],"version-history":[{"count":0,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/10519\/revisions"}],"wp:attachment":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10519"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10519"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10519"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}