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New posts in matrix
numpy get index where value is true
Aug 15, 2022
python
numpy
matrix
how does multiplication differ for NumPy Matrix vs Array classes?
Aug 15, 2022
python
arrays
numpy
matrix
matrix-multiplication
Reshape three column data frame to matrix ("long" to "wide" format) [duplicate]
Sep 16, 2022
r
matrix
dataframe
plyr
reshape
Convert a matrix to a 1 dimensional array
Aug 30, 2022
arrays
r
matrix
Apply a function to every row of a matrix or a data frame
Aug 15, 2022
r
function
matrix
apply
sapply
How to get element-wise matrix multiplication (Hadamard product) in numpy?
Sep 16, 2022
python
numpy
matrix
matrix-multiplication
elementwise-operations
Performance of Java matrix math libraries? [closed]
Dec 14, 2021
java
math
matrix
performance
How do I find the length (or dimensions, size) of a numpy matrix in python? [duplicate]
Aug 15, 2022
python
matrix
numpy
Should I use a data.frame or a matrix?
Dec 14, 2021
r
matrix
dataframe
r-faq
Convert a 1D array to a 2D array in numpy
Aug 15, 2022
python
arrays
matrix
numpy
multidimensional-array
Select rows of a matrix that meet a condition
Aug 15, 2022
r
select
matrix
submatrix
Looping in a spiral
Dec 14, 2021
algorithm
matrix
loops
spiral
R memory management / cannot allocate vector of size n Mb
Aug 15, 2022
r
matrix
vector
memory-management
r-faq
Numpy matrix to array
Dec 14, 2021
python
arrays
matrix
numpy
Why is MATLAB so fast in matrix multiplication?
Aug 14, 2022
performance
matlab
matrix
matrix-multiplication
Transposing a 2D-array in JavaScript
Aug 26, 2022
javascript
arrays
matrix
transpose
Bomb dropping algorithm
Dec 14, 2021
algorithm
language-agnostic
matrix
numpy matrix vector multiplication [duplicate]
Aug 14, 2022
python
arrays
numpy
vector
matrix
What are the most widely used C++ vector/matrix math/linear algebra libraries, and their cost and benefit tradeoffs? [closed]
Dec 14, 2021
c++
math
matrix
linear-algebra
How do you rotate a two dimensional array?
Aug 14, 2022
algorithm
matrix
multidimensional-array
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