python - How does numpy reshape works? - Stack Overflow
Apr 2, 2015 · When you use b = a.reshape((5,4,5)) you just create a different view on the same data used by the array a. (ie changes to the elements of a will appear in b). reshape() does not …
What is x_train.reshape() and What it Does? - Stack Overflow
May 2, 2020 · reshape() function is generally used to change the shape of an array without changing the data. x_train.reshape([-1,num_features]) in this command x_train will be …
python - What does np.reshape (-1) do - Stack Overflow
Aug 8, 2019 · I am aware of what -1 in one of the reshape dimensions does, when the other dimension is provided - say a.reshape (2,-1) ( numpy calculates the dimension for -1, based …
python - What is the difference between resize and reshape when …
Jan 7, 2017 · reshape() in general don't modify data themselves, only meta info about them, the .reshape() method (of ndarray) returns the reshaped array, keeping the original array …
Reshaping data.frame from wide to long format - Stack Overflow
Dec 22, 2011 · 143 reshape() takes a while to get used to, just as melt / cast. Here is a solution with reshape, assuming your data frame is called d:
python - From ND to 1D arrays - Stack Overflow
Conclusion ravel and reshape(-1) 's execution time was consistent and independent from ndarray size. However, ravel is tad faster, but reshape provides flexibility in reshaping size. (maybe …
Reshaping wide to long with multiple values columns
Jan 24, 2017 · 37 reshape does this with the appropriate arguments. varying lists the columns which exist in the wide format, but are split into multiple rows in the long format. v.names is the …
When to use .shape and when to use .reshape? - Stack Overflow
Nov 11, 2014 · I ran into a memory problem when trying to use .reshape on a numpy array and figured if I could somehow reshape the array in place that would be great. I realised that I …
R reshape a vector into multiple columns - Stack Overflow
R reshape a vector into multiple columns Asked 12 years, 3 months ago Modified 6 months ago Viewed 57k times
python - How can I make a two-dimensional NumPy array a three ...
Sep 10, 2011 · I have a two-dimensional array with shape (x, y) which I want to convert to a three-dimensional array with shape (x, y, 1). Is there a nice Pythonic way to do this?