# matrix 228

- How to define a two-dimensional array in Python
- Transpose/Unzip Function (inverse of zip)?
- How can I index a MATLAB array returned by a function without first assigning it to a local variable?
- How do you rotate a two dimensional array?
- What are the differences between numpy arrays and matrices? Which one should I use?
- Bomb dropping algorithm
- What are the most widely used C++ vector/matrix math/linear algebra libraries, and their cost and benefit tradeoffs?
- Difference between numpy.array shape (R, 1) and (R,)
- Performance of Java matrix math libraries?
- Should I use a data.frame or a matrix?
- Looping in a spiral
- how does multiplication differ for NumPy Matrix vs Array classes?
- Finding row index containing maximum value using R
- Numpy matrix to array
- Select rows of a matrix that meet a condition
- Reshape three column data frame to matrix (“long” to “wide” format)
- numpy matrix vector multiplication
- R memory management / cannot allocate vector of size n Mb
- How can I apply a function to every row/column of a matrix in MATLAB?
- Apply a function to every row of a matrix or a data frame
- How do I make a matrix from a list of vectors in R?
- How do I find the length (or dimensions, size) of a numpy matrix in python?
- Transposing a 2D-array in JavaScript
- Android: How to rotate a bitmap on a center point
- Why are quaternions used for rotations?
- Very large matrices using Python and NumPy
- How can I create a correlation matrix in R?
- Join tiles in Corona SDK into one word for a Breakout game grid?
- Convert a matrix to a 1 dimensional array
- How do I iterate through each element in an n-dimensional matrix in MATLAB?
- How can I count the number of elements of a given value in a matrix?
- Find the row representing the smallest integer in row wise sorted matrix
- Function for 'does matrix contain value X?'
- inverting a 4x4 matrix
- Recommendation for C# Matrix Library
- How to use onSensorChanged sensor data in combination with OpenGL
- How to subset matrix to one column, maintain matrix data type, maintain row/column names?
- Multiply rows of matrix by vector?
- Elegant indexing up to end of vector/matrix
- How to convert a matrix to a list of column-vectors in R?
- Numpy ‘smart’ symmetric matrix
- Confusion between C++ and OpenGL matrix order (row-major vs column-major)
- Python Inverse of a Matrix
- Looking for an explanation of post/pre/set Translate (in Matrix object) and how to use them
- In WebGL what are the differences between an attribute, a uniform, and a varying variable?
- Sum a list of matrices
- Split a large dataframe into a list of data frames based on common value in column
- data type not understood
- All Levels of a Factor in a Model Matrix in R
- Convert a 1D array to a 2D array in numpy