Jul 12, 2011 · I want to define a two-dimensional array without an initialized length like this: Matrix = [][] But this gives an error: IndexError: list index out of range

numpy provides a multidimensional array type. Building a good multidimensional array out of lists is possible but less useful and harder for a beginner than using numpy. Nested lists are great …

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?

Create arbitrary multidimensional zeros array Asked 12 years, 6 months ago Modified 8 months ago Viewed 55k times

Sep 25, 2012 · I want to convert a 1-dimensional array into a 2-dimensional array by specifying the number of columns in the 2D array. Something that would work like this: > import numpy …

Mar 16, 2018 · The methods that use transpose (function or method or property) produce a F order array, with strides like (8,16) instead of the usual (16,8). All the stack functions use …

There is no array type in python, but to emulate it we can use lists. I want to have 2d array-like structure filled in with zeros. My question is: what is the difference, if any, in this two expres...

Jan 5, 2017 · I have two flat lists of geographical coordinates (lat, long), and I need to combine them into a 2D array or matrix. They are now stored in a dataframe: lat lon 0 48.010258 -6.156...

Oct 16, 2022 · Using Matplotlib, I want to plot a 2D heat map. My data is an n-by-n Numpy array, each with a value between 0 and 1. So for the (i, j) element of this array, I want to plot a …

3 If you are concerned about memory footprint, the Python standard library contains the array module; these arrays contain elements of the same type.