Category "matrix"

Transport modes/profiles in PTV developer Distance matrix API

I was planning to use PTV Developer API to calculate a distance matrix using something more sophisticated than a Manhattan distance. However looking at the Rou

How to decompose a 9x9 matrix to 3x3 matrices?

I'm trying to decompose a 9x9 matrix into 9 3x3 matrices. I've already used the command reshape, but the matrices it returns are the ones as transforming the co

Misconception regarding the matrix values e and f in svg

I seem to have a logical misconception, regarding the matrix of svg elements, specifically the parts e and f, which I hope someone can help me clarify. Basing o

Eigenanalysis of complex hermitian matrix: different phase angles for EIG and EIGH

I understand that eigenvectors are only defined up to a multiplicative constant. As far as I see all numpy algorithms (e.g. linalg.eig, linalg.eigh, linalg.svd)

How to make a vector of matrices in numpy

I would like to create a vector of the same matrix in numpy (so as an array). Let's say the matrix is: w = np.array([[1,2], [3,4], [

Singular Value Decomposition (SVD) outputs a 1-D singular value array, instead of 2-D diagonal matrix [Python]

I was posting a question on similar subject, and encountered another more important question. When I apply SVD to a matrix 'A' (code below) the output I get is

How to use dynamic 2d array inside a struct array in C?

What do I want to do? I'm working on a project on dynamic matrix multiplication. I want to input from the user that on how many matrices, he/she wants to perfor

How to replace min and max value row in 2-d array python

i have an 2-d array(matrix) 3x3 like [[1, 2, 3],[4, 5, 6],[7, 8, 9]] and i need to replace 2 rows where is max and min value so its looks like: [[7, 8, 9],[4, 5

How to exclude coordinates which overflow matrix

The task is to write a function that returns all its neighbors for an element. Diagonal elements are not considered neighbors. In general, the problem is solved

Multiples transformations matrix on SVG, get cursor point

This question is probably more related to math than svg itself. Inside a main svg, got multiples transformed svg, (from different events), by a viewBox attrib

Imposing constraints on all (numbered) diagonals in CVXPY

I am looking to implement a constraint on an optimization on all diagonals of a matrix using CVXPY. The diag function in CVXPY only returns the main diagonal.

How to find the weight of the heaviest path of an undirected, unweighted graph (M(d) of the graph), using adjacency matrix

In the image A-L is the longest path, but L-M is the heaviest The heaviest path of the graph is the path with the most edges connected to it, for this current c

Double lexicographic sorting of binary (0-1) matrices

I want to sort a binary matrix so that its columns and rows are both in lexicographical order by switching rows and columns. In other words, I need a double-lex

Intersect float rows in two numpy matrices with precision

I'm looking for rows in B which are close to any of the rows in A example: eps = 0.1 A = [[1.22, 1.33], [1.45, 1.66]] B = [[1.25, 1.34], [1.77, 1.66], [1.44, 1.

How do I fill Matrix4 with translation, skew and scale values in flutter?

Suppose, I have these values for a container of height 200 and width 300: scaleX = 0.9198 scaleY = 0.9198 skewX = -0.3923 skewY = 0.3923 translateX = 150 transl

Pythonic way to get both diagonals passing through a matrix entry (i,j)

What is the Pythonic way to get a list of diagonal elements in a matrix passing through entry (i,j)? For e.g., given a matrix like: [1 2 3 4 5] [6 7 8

Run time error assigning cv::Mat element value using cv::Mat::at

In the following code I would like to assign a values to elements of a Mat variable in a loop. I get the runtime error below. pair<Mat, Mat> meshgrid(vect

Maya, turn off Segment Scale Compensate and keep pose unchanged in python?

I have already make many animations using Segment Scale Compensate, I need to import these animations to Unity, unfortunately, while SSC is enabled, animations

create cosine similarity matrix numpy

Suppose I have a numpy matrix like the following: array([array([ 0.0072427 , 0.00669255, 0.00785213, 0.00845336, 0.01042869]), array([ 0.00710799, 0.00

Finding a specific element in a matrix with set parameters

I created a code for financial options and there is one last thing missing to finish it. I want my code to find the implied volatility for a specific option. My