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Return an array of ones with the same shape and type as a given array. Parameters: a : array_like The shape and data-type of a define these same attri 阅读全文
posted @ 2016-03-25 12:00
qqhfeng16
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numpy.zeros Return a new array of given shape and type, filled with zeros. shape : int or sequence of ints Shape of the new array, e.g., (2, 3) or 2. 阅读全文
posted @ 2016-03-25 11:58
qqhfeng16
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摘要:
Return a new array of given shape and type, filled with ones. shape : int or sequence of ints Shape of the new array, e.g., (2, 3) or 2. dtype : data- 阅读全文
posted @ 2016-03-25 11:55
qqhfeng16
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摘要:
一、数组方法创建数组:arange()创建一维数组;array()创建一维或多维数组,其参数是类似于数组的对象,如列表等创建数组:np.zeros((2,3)),或者np.ones((2,3)),参数是一个元组分别表示行数和列数对应元素相乘,a * b,得到一个新的矩阵数学上定义的矩阵乘法 np.d 阅读全文
posted @ 2016-03-25 10:48
qqhfeng16
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