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New posts in matrix
How to find the column means for a sparse matrix excluding 0 values?
Jun 06, 2022
r
matrix
sparse-matrix
mean
Why isn't column-wise operation much faster than row-wise operation (as it should be) for a matrix in R
Jun 01, 2022
r
performance
matrix
Creating a correlation matrix from a data frame in R
Jun 29, 2022
r
matrix
correlation
int matrix with pointers in C - memory allocation confusion
Jun 01, 2022
c
pointers
memory-management
matrix
How to use Eigen, the C++ template library for linear algebra?
Oct 27, 2022
c++
matrix
simd
eigen
Compressing a binary matrix
Oct 18, 2017
language-agnostic
binary
matrix
compression
Cubic Spline Program
Oct 22, 2022
matlab
matrix
interpolation
spline
conversion from ‘arma::umat’ to ‘arma::mat’
Aug 15, 2020
c++
matrix
rcpp
armadillo
Filter numpy ndarray (matrix) according to column values
Aug 28, 2022
python
matrix
numpy
joining two numpy matrices
Aug 30, 2021
python
multidimensional-array
matrix
numpy
scipy
How to get sum of each row and sum of each column in Scipy sparse matrices (csr_matrix and csc_matrix)?
May 30, 2022
python
matrix
sum
scipy
sparse-matrix
How to return TRUE if matrix contains any NAs?
Sep 19, 2018
r
matrix
na
How to multiply each column of matrix A by each row of matrix B and sum resulting matrices in Matlab?
Sep 17, 2022
performance
matlab
matrix
matrix-multiplication
What is the gl_NormalMatrix and gl_ModelViewMatrix in shaders?
Aug 22, 2019
c++
opengl
matrix
glsl
How to fill a matrix using an equation in MATLAB?
Feb 22, 2021
matlab
matrix
Spiral loop on a matrix from a point
May 31, 2022
arrays
matlab
loops
matrix
Modify Eigen matrix diagonal
Apr 22, 2022
c++
matrix
eigen
diagonal
MATLAB: Splitting a matrix based on multiple values
Aug 23, 2022
matlab
matrix
indexing
R - How to get row & column subscripts of matched elements from a distance matrix
Nov 18, 2022
r
matrix
distance
euclidean-distance
Matrix multiplication in R: requires numeric/complex matrix/vector arguments
Jun 07, 2019
r
matrix
matrix-multiplication
multiplication
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