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【Python】pandasのSeries、DataFrameとは ref: http://qiita.com/kiimiiis/items/0e1646adf0dab0061845
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#数値計算ライブラリインポート | |
import numpy | |
#データ分析ライブラリからSeriesとDataFrameをインポート | |
from pandas import Series, DataFrame | |
#Series | |
#data仮引数 : データ。array-like, dict, or scalar value | |
#index仮引数 : データの添え字。array-like or Index (1d) | |
#dtype仮引数 : データタイプ。numpy.dtype or None | |
#copy仮引数 : コピー。デフォルトはfalse | |
#name仮引数 : 結果につける名前 | |
#1 | |
print(Series(data=[0,1])) | |
#2 | |
print(Series(data=[2,3], index=['x', 'y'], name='value')) | |
#DataFrame | |
#data仮引数 : データ ( numpy ndarray (structured or homogeneous), dict, or DataFrame) | |
#index仮引数 : 要素のインデックス。デフォルトは添え字配列みたいに数字 | |
#columns仮引数 : 2次元のインデックス。デフォルトは数字 | |
#dtype仮引数 : データタイプ。dtype, default None | |
#copy仮引数 : コピー。デフォルトはfalse。 | |
#3 | |
print(DataFrame(numpy.array([[0,0],[1,1]]))) | |
#4 | |
print(DataFrame(numpy.array([[0,0],[1,1]]), index=['a', 'b'])) | |
#5 | |
print(DataFrame(numpy.array([[0,0],[1,1]]), index=['a', 'b'], columns=['x', 'y'])) |
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#1 | |
0 0 | |
1 1 | |
dtype: int64 | |
#2 | |
x 2 | |
y 3 | |
Name: value, dtype: int64 | |
#3 | |
0 1 | |
0 0 0 | |
1 1 1 | |
#4 | |
0 1 | |
a 0 0 | |
b 1 1 | |
#5 | |
x y | |
a 0 0 | |
b 1 1 |
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