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New posts in matrix
Creating new column in data frame in R by comparing 2 existing columns and then deleting the latter
Dec 03, 2025
r
matrix
dataframe
Haskell's bed-and-breakfast matrix multiplication is wrong?
Dec 02, 2025
haskell
matrix
linear-algebra
Converting coordinates vector to numpy 2D matrix
Dec 02, 2025
python
numpy
matrix
matplotlib
lidar
Create conditional sequence in dataframe in R
Dec 01, 2025
r
matrix
seq
MPI_Scatter: Why do I have to allocate memory in all the processes?
Dec 01, 2025
c++
matrix
parallel-processing
mpi
scatter
Iterate in submatrices through a bigger matrix
Dec 01, 2025
python
loops
numpy
matrix
How to get a 2 columns, 8 rows matrix instead of returning 2 rows, 8 columns matrix using sapply?
Dec 02, 2025
r
matrix
sapply
Column Wise [R] Matrix Multiplication
Dec 01, 2025
r
matrix
Get indices of rows whose elements equal x at all columns indicated by a vector, in R
Dec 01, 2025
r
matrix
Build a sparse matrix with items coexistence frequency (to analyze cross-selling of products) [duplicate]
Dec 01, 2025
r
matrix
sparse-matrix
contingency
Armadillo C++ doesn't find matrix inverse
Dec 01, 2025
c++
matrix
armadillo
inverse
How to convert a 4x4 matrix to a 3x3 matrix?
Dec 01, 2025
opencv
matrix
catransform3d
Handle PDF text matrix (Tm) values obtained with CGPDFScanner on iPhone/iPad
Dec 01, 2025
iphone
search
pdf
text
matrix
How to calculate the outer product of two matrices A and B per rows faster in python (numpy)?
Dec 01, 2025
python-2.7
numpy
matrix
How to change column in matrix according to another column
Dec 01, 2025
r
matrix
Apply a bunch of functions to columns of a matrix in R
Nov 30, 2025
r
matrix
apply
Passing matrix to function, C
Nov 30, 2025
c
function
matrix
OpenGL projection matrix for perspective with fovy and aspect
Nov 30, 2025
java
c++
opengl
matrix
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