python - 如何将索引从 Matlab 转换为 Python？

Question

我正在尝试将此代码从 Matlab 转换为 Python：

index = Output_num - 3;

X = Data(1:end - 3, 1:end);
T = Data(end + index:end + index, 1:end);

我测试了许多选项，但其中任何一个都对我有用。

我试过这样：

index = Output_num -3 #this works good

X = Data[0:-3] # I think this works good ( I compared results with the one from Matlab)

T1 = Data[-1] # with this one I try to access to the last row of the 2d array. The aim was to access on it and then add index on all the rows with the following:

T = T1 + index

标签： pythonmatlabindexing

Answer 1

我不知道您的初始数据是什么样的，但我从您的回答中假设它是一个二维数组。

对于python中的二维数组：

rows, cols = (10, 10)
Data = [[1]*cols]*rows

要访问此数组，您需要以这种方式同时使用 rows 和 cols 索引：

print(Data[row_number][col_number])

额外的访问和分配：

Data[-1][-1] = 9 #assign constant to the last element of the 2D array
print(Data[0][0]) #print the first element of 2D array
print(Data[-1]) #print the last row of 2D array including the assigned number

输出：

Data[0][0] = 1
Data[-1] = [1, 1, 1, 1, 9]