If I start with a 3×4 array, and concatenate a 3×1 array, with axis 1, I get a 3×5 array: Note that both inputs to concatenate have 2 dimensions. Omit the :, and x[:,-1] is (3,) shape – it is 1d, and hence the error: The code for np.append is (in this case where axis is specified) So with a … Read more
TensorFlow 2.x Eager Execution is enabled by default, so just call .numpy() on the Tensor object. See NumPy Compatibility for more. It is worth noting (from the docs), Numpy array may share memory with the Tensor object. Any changes to one may be reflected in the other. Bold emphasis mine. A copy may or may not be returned, and this is … Read more
sort() was deprecated for DataFrames in favor of either: sort_values() to sort by column(s) sort_index() to sort by the index sort() was deprecated (but still available) in Pandas with release 0.17 (2015-10-09) with the introduction of sort_values() and sort_index(). It was removed from Pandas with release 0.20 (2017-05-05).
The .T accesses the attribute T of the object, which happens to be a NumPy array. The T attribute is the transpose of the array, see the documentation. Apparently you are creating random coordinates in the plane. The output of multivariate_normal() might look like this: The transpose of this matrix is: which can be conveniently separated in x and y parts by sequence unpacking.
TensorFlow 2.x Eager Execution is enabled by default, so just call .numpy() on the Tensor object. See NumPy Compatibility for more. It is worth noting (from the docs), Numpy array may share memory with the Tensor object. Any changes to one may be reflected in the other. Bold emphasis mine. A copy may or may not be returned, and this is … Read more
sort() was deprecated for DataFrames in favor of either: sort_values() to sort by column(s) sort_index() to sort by the index sort() was deprecated (but still available) in Pandas with release 0.17 (2015-10-09) with the introduction of sort_values() and sort_index(). It was removed from Pandas with release 0.20 (2017-05-05).
So, what im trying to do is get certain numbers from certain positions in a array of a given > range and put them into an equation I try to run it and I get this.. I get error.. how can I use certain numbers in an array and put them into an equation?
So, what im trying to do is get certain numbers from certain positions in a array of a given > range and put them into an equation I try to run it and I get this.. I get error.. how can I use certain numbers in an array and put them into an equation?
I’m using Windows, and I’m trying to install package cv2 for python3. I did a pip3 install opencv-python and it reports successful: But when I do the import cv2 from python3, it’s not found and I get weird errors: What am I doing wrong?
You can use a list comprehension: The iterator enumerate(my_list) yields pairs (index, item) for each item in the list. Using i, x as loop variable target unpacks these pairs into the index i and the list item x. We filter down to all x that match our criterion, and select the indices i of these elements.