\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u4e71\u6570\u914d\u5217a\u3092\u4f5c\u6210\u3059\u308b\u3002<\/p>\n
>>> import numpy as np\r\n>>> a = np.random.randint(0,5,10)\r\n>>> a\r\narray([1, 2, 2, 0, 1, 3, 2, 1, 1, 4])\r\n<\/pre>\n\u5024\u304c3\u4ee5\u4e0a\u306e\u8981\u7d20\u3092\u691c\u7d22\u3059\u308b\u3002\u2192 [5]\u306b3, [9]\u306b4\u304c\u691c\u51fa\u3055\u308c\u305f\u3002<\/p>\n
>>> b = np.where(a >= 3)<\/span>\r\n>>> b\r\n(array([5, 9]),)\r\n>>> a[b]\r\narray([3, 4])\r\n<\/pre>\n\u975e0\u306e\u8981\u7d20\u3092\u691c\u7d22\u3059\u308b\u3002<\/p>\n
>>> c = np.nonzero(a)<\/span>\r\n>>> c\r\n(array([0, 1, 2, 4, 5, 6, 7, 8, 9]),)\r\n>>> a\r\narray([1, 2, 2, 1, 3, 2, 1, 1, 4])\r\n<\/pre>\n\u3053\u308c\u3067\u3082\u540c\u3058\u3053\u3068\u3002<\/p>\n
>>> d = np.where(a != 0)<\/span>\r\n>>> d\r\n(array([0, 1, 2, 4, 5, 6, 7, 8, 9]),)\r\n>>> a[d]\r\narray([1, 2, 2, 1, 3, 2, 1, 1, 4])\r\n<\/pre>\n
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