matrix_a = np.array([[1, 2], [3, 4]]) matrix_b = np.array([[5, 6], [7, 8]]) # 矩阵乘法 result_matrix = np.dot(matrix_a, matrix_b) print("Matrix Multiplication Result:") print(result_matrix) # 矩阵转置 transposed_matrix
DataFrame.plot(self,*args,**kwargs) 参数: 数据是DataFrame/ Series x是label或position,默认None 类型:有多种,比如scatter散点图, bar垂直条 很多参数。 例子:绘制散点图: df = pd.DataFrame({"xs":[1,5,2,8,1],"ys":[4,2,1,9,6]})df.plot.scatter("xs","ys", color ="red", marker ...
matrix_a=np.array([[1,2],[3,4]])matrix_b=np.array([[5,6],[7,8]]) # 矩阵乘法 result_matrix=np.dot(matrix_a,matrix_b)print("Matrix Multiplication Result:")print(result_matrix) # 矩阵转置 transposed_matrix_a=np.transpose(matrix_a)print("\nTransposed Matrix A:")print(tra...
The dot() function is used to compute the matrix multiplication between the DataFrame and other. Syntax: DataFrame.dot(self, other) Parameters: Returns:Series or DataFrame If other is a Series, return the matrix product between self and other as a Serie. If other is a DataFrame or a numpy...
importnumpyasnp# 创建两个矩阵matrix_a=np.array([[1,2],[3,4]])matrix_b=np.array([[5,6],[7,8]])# 矩阵乘法result_matrix=np.dot(matrix_a,matrix_b)print("Matrix Multiplication Result:")print(result_matrix)# 矩阵转置transposed_matrix_a=np.transpose(matrix_a)print("\nTransposed Matrix...
Pandas 之 Series / DataFrame 初识 importnumpyasnpimportpandasaspd Pandas will be a major tool of interest throughout(贯穿) much of the rest of the book. It contains data structures and manipulation tools designed to make data cleaning(数据清洗) and analysis fast and easy in Python. pandas is...
12 13 14 15 print(data < 5) # 残生相应的Boolean值matrix data[data < 5] = 0 """ Selection with loc and iloc They enable you to select a subset of the rows and columns from a DataFrame with NumPy-like notation using either axis labels (loc) or integers(iloc...
Pandas 之 Series / DataFrame 初识 numpyasnp importpandasaspd 1. 2. Pandas will be a major tool of interest throughout(贯穿) much of the rest of the book. It contains data structures and manipulation tools designed to make data cleaning(数据清洗) and analysis fast and easy in Python. ...
def dot(self, other: AnyArrayLike | DataFrame) -> DataFrame | Series: """ Compute the matrix multiplication between the DataFrame and other. This method computes the matrix product between the DataFrame and the values of an other Series, DataFrame or a numpy array. It can also be...
3.3 Matrix multiplication 点积和矩阵乘法由于 NumPy 数组基本上是向量和矩阵，因此存在用于点积和矩阵...