
What does .shape [] do in "for i in range (Y.shape [0])"?
shape is a tuple that gives you an indication of the number of dimensions in the array. So in your case, since the index value of Y.shape[0] is 0, your are working along the first dimension of …
Difference between numpy.array shape (R, 1) and (R,)
Shape n, expresses the shape of a 1D array with n items, and n, 1 the shape of a n-row x 1-column array. (R,) and (R,1) just add (useless) parentheses but still express respectively 1D …
python - x.shape [0] vs x [0].shape in NumPy - Stack Overflow
Jan 7, 2018 · x[0].shape will give the Length of 1st row of an array. x.shape[0] will give the number of rows in an array. In your case it will give output 10. If you will type x.shape[1], it will …
python - What does -1 mean in numpy reshape? - Stack Overflow
Sep 9, 2013 · When reshaping an array, the new shape must contain the same number of elements as the old shape, meaning the products of the two shapes' dimensions must be …
arrays - what does numpy ndarray shape do? - Stack Overflow
Nov 30, 2017 · yourarray.shape or np.shape() or np.ma.shape() returns the shape of your ndarray as a tuple; And you can get the (number of) dimensions of your array using yourarray.ndim or …
PyTorch: How to get the shape of a Tensor as a list of int
Oct 19, 2017 · P.S.: Note that tensor.shape is an alias to tensor.size(), though tensor.shape is an attribute of the tensor in question whereas tensor.size() is a function. Share Improve this answer
I want to know what it means (height,width)=img.shape [:2]
Feb 1, 2021 · Then the shape of the object holds a tuple (rows, columns, channels). (height,width)=img.shape[:2] is an example of tuple unpacking, with it you extract the rows and …
python - shape vs len for numpy array - Stack Overflow
May 24, 2016 · So maybe df.shape[0] + df.shape[1] is slower than len(df.index) + len(df.columns). Still, performance-wise, the difference should be negligible except for a giant giant 2D …
Changing shapes used for scale_shape () in ggplot2
Jun 9, 2015 · To complement Harlan's answer, here is a references for the available shapes - start from 0 at bottom left and read right then up (10y + x):
Pandas Dataframe ValueError: Shape of passed values is (X, ), …
ValueError: Shape of passed values is (5,), indices imply (5, 5) I've been wrestling with this for a few days now and nothing seems to work. What is interesting is that when I change . def …