All Matrix Solutions on Gang of Coders

Total of 92 Matrix Solutions

Create dataframe from a matrix

R Matrix Dataframe

Remove a column from a matrix in GNU Octave

Generate a matrix containing all combinations of elements taken from n vectors

Arrays Matlab Matrix Combinations Cartesian Product

How can I rotate a mesh by 90 degrees in ThreeJS?

Javascript Matrix 3d Rotation three.js

Scipy sparse... arrays?

Python Matrix Numpy Scipy Sparse Matrix

Android: Matrix -> what is the different between preconcat and postconcat?

Extract matrix column values by matrix column name

R Matrix Subset

What does a circled plus mean?

Math Cryptography Matrix

Matrix from Python to MATLAB

Python Matlab File Io Import Matrix

Get the indices of the n largest elements in a matrix

Concatenating Matrices in R

R Matrix Concatenation

What are the most widely used C++ vector/matrix math/linear algebra libraries, and their cost and benefit tradeoffs?

C++Math Matrix Linear Algebra

numpy matrix vector multiplication

Python Arrays Numpy Vector Matrix

Bomb dropping algorithm

Algorithm Language Agnostic Matrix

Transposing a 2D-array in JavaScript

Javascript Arrays Matrix Transpose

Why is MATLAB so fast in matrix multiplication?

Performance Matlab Matrix Matrix Multiplication

Numpy matrix to array

Python Arrays Matrix Numpy

R memory management / cannot allocate vector of size n Mb

R Matrix Vector Memory Management R Faq

Select rows of a matrix that meet a condition

R Select Matrix Submatrix

Looping in a spiral

Algorithm Matrix Loops Spiral

Convert a 1D array to a 2D array in numpy

Python Arrays Matrix Numpy Multidimensional Array

How do I find the length (or dimensions, size) of a numpy matrix in python?

Python Matrix Numpy

How to get element-wise matrix multiplication (Hadamard product) in numpy?

Python Numpy Matrix Matrix Multiplication Elementwise Operations

Should I use a data.frame or a matrix?

R Matrix Dataframe R Faq

Performance of Java matrix math libraries?

Java Math Matrix Performance

Apply a function to every row of a matrix or a data frame

R Function Matrix Apply Sapply

numpy get index where value is true

Python Numpy Matrix

Reshape three column data frame to matrix ("long" to "wide" format)

R Matrix Dataframe Plyr Reshape

Convert a matrix to a 1 dimensional array

Arrays R Matrix

how does multiplication differ for NumPy Matrix vs Array classes?

Python Arrays Numpy Matrix Matrix Multiplication

How can I plot a confusion matrix?

Python Matplotlib Matrix Scikit Learn Text Classification

Finding row index containing maximum value using R

Why are quaternions used for rotations?

Matrix 3d Quaternions Rotational Matrices

Transpose/Unzip Function (inverse of zip)?

Python List Matrix Transpose

Counting the number of non-NaN elements in a numpy ndarray in Python

Python Numpy Matrix Nan

How do I make a matrix from a list of vectors in R?

R Matrix Vector

How can I apply a function to every row/column of a matrix in MATLAB?

Matlab Function Matrix Vectorization

data type not understood

Python Matrix Numpy

Split a large dataframe into a list of data frames based on common value in column

R Performance Matrix Split Dataframe

Sum rows in data.frame or matrix

R Dataframe Matrix Rowsum

How to subset matrix to one column, maintain matrix data type, maintain row/column names?

R Matrix Subset R Faq

Very large matrices using Python and NumPy

Python Matrix Numpy

In WebGL what are the differences between an attribute, a uniform, and a varying variable?

Variables Types Matrix Webgl

Inverting a 4x4 matrix

C++Algorithm Math Matrix Matrix Inverse

How can I create a correlation matrix in R?

R Matrix Visualization Correlation

How to convert a matrix to a list of column-vectors in R?

java Arrays.sort 2d array

Java Arrays Sorting Matrix

How do I iterate through each element in an n-dimensional matrix in MATLAB?

Arrays Matlab Matrix Multidimensional Array Iteration

Pretty print 2D list?

What is the fastest way to transpose a matrix in C++?

C++Algorithm Matrix Transpose

Confusion between C++ and OpenGL matrix order (row-major vs column-major)

C++Math Opengl Matrix

Android: How to rotate a bitmap on a center point

Android Matrix Bitmap Center Image Rotation

Elegant indexing up to end of vector/matrix

R Matrix Dataframe Indexing

undefined reference to `std::ios_base::Init::Init()'

C Matrix Coredump

How to do product of matrices in PyTorch

Python Matrix Pytorch

What are the differences between numpy arrays and matrices? Which one should I use?

Python Arrays Matrix Numpy

Inverse of a matrix using numpy

Python Numpy Matrix

Scale and mirror SVG object

Svg Matrix Scale Flip

Numpy ‘smart’ symmetric matrix

Python Matrix Numpy

Join tiles in Corona SDK into one word for a Breakout game grid?

Matrix Lua Coronasdk Breakout

Recommendation for C# Matrix Library

Multiply rows of matrix by vector?

R Vector Matrix Multiplication

Find out if matrix is positive definite with numpy

Python Matrix Numpy Scipy

How to turn a vector into a matrix in R?

R Vector Matrix

Subscript out of bounds - general definition and solution?

Difference between numpy.array shape (R, 1) and (R,)

Python Numpy Matrix Multidimensional Array

How can I index a MATLAB array returned by a function without first assigning it to a local variable?

Matlab Indexing Matrix Return Value Variable Assignment

How to create an empty matrix in R?

How can I count the number of elements of a given value in a matrix?

Matlab Count Matrix

All Levels of a Factor in a Model Matrix in R

R Matrix Model Indicator

Function for 'does matrix contain value X?'

Matlab Function Matrix Floating Point

Vector of Vectors to create matrix

C++Vector Matrix

How to divide each row of a matrix by elements of a vector in R

R Matrix Vector

set vim background transparent

Matrix Vim Terminal Vim Plugin Color Scheme

Get all the diagonals in a matrix/list of lists in Python

Python Matrix Diagonal

Appending a list to a list of lists in R

R List Matrix Append Extend

How to convert a huge list-of-vector to a matrix more efficiently?

R List Matrix Performance

Find row and column index of maximum value in a matrix

Find the row representing the smallest integer in row wise sorted matrix

Arrays Algorithm Language Agnostic Matrix

Looking for an explanation of post/pre/set Translate (in Matrix object) and how to use them

Android Matrix Bitmap Android Canvas

Convert Eigen Matrix to C array

C++Arrays Matrix Eigen

difference between numpy dot() and inner()

Python Matrix Numpy

Sum a list of matrices

numpy subtract every row of matrix by vector

Python Numpy Matrix

How do you rotate a two dimensional array?

Algorithm Matrix Multidimensional Array

How to use onSensorChanged sensor data in combination with OpenGL

Android Opengl Es Matrix Rotation Sensors

Iterating over Numpy matrix rows to apply a function each?

Python Matrix Numpy

Python Inverse of a Matrix

Python Algorithm Matrix Linear Algebra Matrix Inverse

Deprecation status of the NumPy matrix class

Python Numpy Matrix Deprecated Numpy Ndarray

What techniques exists in R to visualize a "distance matrix"?

R Matrix Visualization Data Visualization

Right way to convert data.frame to a numeric matrix, when df also contains strings?

R If Statement Matrix Numeric

Rotate a Matrix in R by 90 degrees clockwise

R Matrix Transpose