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Showing posts with the label Multidimensional Array

How To Append/replace An Item From Multi Dimensional Array By An Item From Another Multi-dimensional Array Based On A Specific Condition

I have 2 3-d arrays and am trying to replace the innermost element of 1st with the elements of 2nd … Read more How To Append/replace An Item From Multi Dimensional Array By An Item From Another Multi-dimensional Array Based On A Specific Condition

Fill Two-dimensional List With Values Instead Of Initializing It First With Zeros

I have a two-dimensional array that I want to fill up with values that represent powers but my prob… Read more Fill Two-dimensional List With Values Instead Of Initializing It First With Zeros

Why Is B = Numpy.dot(a,x) So Much Slower Looping Through Doing B[i,:,:] = Numpy.dot(a[i,:,:],x) )?

I'm getting some efficiency test results that I can't explain. I want to assemble a matrix… Read more Why Is B = Numpy.dot(a,x) So Much Slower Looping Through Doing B[i,:,:] = Numpy.dot(a[i,:,:],x) )?

Detecting Rectangles (sub-arrays Of Same Element Value) In 2-d List

A rectangle is defined as any rectangular-shaped section of zeros within a 2-d array of 1s and 0s. … Read more Detecting Rectangles (sub-arrays Of Same Element Value) In 2-d List

Deep Learning (lstm) With Keras And Variable Size Of Inputs

I am trying to implement a lstm model with keras. The problem is that I have data of different shap… Read more Deep Learning (lstm) With Keras And Variable Size Of Inputs

How Do I Apply Function To Third-dimension Array Effectively With Numpy?

I want to apply arbitrary function to 3d-ndarray as element, which use (3rd-dimensional) array for … Read more How Do I Apply Function To Third-dimension Array Effectively With Numpy?

Numpy Array Indexing With Other Arrays Yields Broadcasting Error

I have two indexing arrays. elim=range(130,240) tlim=range(0,610) The array to be indexed, I, has… Read more Numpy Array Indexing With Other Arrays Yields Broadcasting Error

Basic Python Programming Help Needed Involving Arrays And Random Locations

Consider a 100X100 array. Generate an array of several thousand random locations within such an ar… Read more Basic Python Programming Help Needed Involving Arrays And Random Locations

Create An Array Where Each Element Stores Its Indices

I want to create a 2d numpy array where every element is a tuple of its indices. Example (4x5): arr… Read more Create An Array Where Each Element Stores Its Indices

Putting Incomplete Nested Lists In A Rectangular Ndarray

In Python (also using numpy) I have a list of lists of lists, with each list being different length… Read more Putting Incomplete Nested Lists In A Rectangular Ndarray

Forming Numpy Array From Array Buffer From Shared Memory (multiprocessing) Fails

I need to have a multidimensional array in a shared memory between two processes. I'm trying to… Read more Forming Numpy Array From Array Buffer From Shared Memory (multiprocessing) Fails

Find The Median Of Each Row Of A 2 Dimensional Array

I am trying to find the median of each row of a 2 dimensional array. This is what I have tried so f… Read more Find The Median Of Each Row Of A 2 Dimensional Array

How To Faster Iterate Over A Python Numpy.ndarray With 2 Dimensions

So, i simply want to make this faster: for x in range(matrix.shape[0]): for y in range(matr… Read more How To Faster Iterate Over A Python Numpy.ndarray With 2 Dimensions

Attributeerror: Python: Undefined Symbol: When Accessing C++ Function From Python Using Ctypes

What I am trying to do is call a C++ method from Python to return a 2D array. The Python filename i… Read more Attributeerror: Python: Undefined Symbol: When Accessing C++ Function From Python Using Ctypes

Iterating Over 3d Numpy Using One Dimension As Iterator Remaining Dimensions In The Loop

Despite there being a number of similar questions related to iterating over a 3D array and after tr… Read more Iterating Over 3d Numpy Using One Dimension As Iterator Remaining Dimensions In The Loop

Compare 1 Column Of 2d Array And Remove Duplicates Python

Say I have a 2D array like: array = [['abc',2,3,], ['abc',2,3], [&… Read more Compare 1 Column Of 2d Array And Remove Duplicates Python

Is There An Equivalent To R Apply Function In Python?

I am trying to find the Python equivalent to R's apply function but with multidimensional array… Read more Is There An Equivalent To R Apply Function In Python?

Monte Carlo In 8 Dimensions Not Giving Correct Answer

I've been trying to compute the integral of (10*6)*sin(x0+x1+x2+x3+x4+x5+x6+x7)dx0dx1dx2dx3dx4d… Read more Monte Carlo In 8 Dimensions Not Giving Correct Answer

Cosine Distance Of Arrays Of Different Shapes In Python?

I asked this question How is the cosine distance calculated for two arrays with different shapes in… Read more Cosine Distance Of Arrays Of Different Shapes In Python?

What Is Uninitialized Data In Pytorch.empty Function

i was going through pytorch tutorial and came across pytorch.empty function. it was mentioned that … Read more What Is Uninitialized Data In Pytorch.empty Function