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c++ Programming Glossary: matrix

Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?

http://stackoverflow.com/questions/11413855/why-is-transposing-a-matrix-of-512x512-much-slower-than-transposing-a-matrix-of

is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513.. a matrix of 512x512 much slower than transposing a matrix of 513x513 After conducting some experiments on square matrices.. sizes a pattern came up. Invariably transposing a matrix of size 2^n is slower than transposing one of size 2^n 1 . For..

What is “cache-friendly” code?

http://stackoverflow.com/questions/16699247/what-is-cache-friendly-code

two dimensional arrays. For example consider the following matrix 1 2 3 4 In row major ordering this is stored in memory as 1.. detail in his answer. When fetching a certain element of a matrix from memory elements near it will be fetched as well and stored.. cache comprises a single cache line which can contain 2 matrix elements and that when a given element is fetched from memory..

dynamical two dimension array according to input

http://stackoverflow.com/questions/2216017/dynamical-two-dimension-array-according-to-input

I need to get an input N from the user and generate a N N matrix. How can I declare the matrix Generally the size of the array.. the user and generate a N N matrix. How can I declare the matrix Generally the size of the array and matrix should be fixed at.. I declare the matrix Generally the size of the array and matrix should be fixed at the declaration right What about vector vector..

How do I best handle dynamic multi-dimensional arrays in C/C++?

http://stackoverflow.com/questions/365782/how-do-i-best-handle-dynamic-multi-dimensional-arrays-in-c-c

1 6 Please enter the size of the dimension 2 2 Text matrix with 3 dimensions of size 4 6 2 have been created. Ready Type.. process_command const std string entry TextMatrix text_matrix Print the position values in the standard output. void display_position.. with the previously collected informations TextMatrix text_matrix dimensions std cout Text matrix with DIMENSION_COUNT dimensions..

Executing cv::warpPerspective for a fake deskewing on a set of cv::Point

http://stackoverflow.com/questions/7838487/executing-cvwarpperspective-for-a-fake-deskewing-on-a-set-of-cvpoint

transform needs and expects ONLY 3 points and the result matrix is 2 by 3 instead of 3 by 3. How to make the result image have..

Why is my program slow when looping over exactly 8192 elements?

http://stackoverflow.com/questions/12264970/why-is-my-program-slow-when-looping-over-exactly-8192-elements

512x512 much slower than transposing a matrix of 513x513 Matrix multiplication Small difference in matrix size large difference..

How to overload array index operator for wrapper class of 2D array?

http://stackoverflow.com/questions/1971201/how-to-overload-array-index-operator-for-wrapper-class-of-2d-array

class of 2D array #define ROW 3 #define COL 4 class Matrix private int mat ROW COL ..... ..... int main Matrix m int a.. class Matrix private int mat ROW COL ..... ..... int main Matrix m int a m 0 1 reading m 0 2 m 1 1 writing I think directly it..

Best C++ Matrix Library for sparse unitary matrices

http://stackoverflow.com/questions/2222549/best-c-matrix-library-for-sparse-unitary-matrices

C Matrix Library for sparse unitary matrices I am looking for a good..

C++ template typedef

http://stackoverflow.com/questions/2795023/c-template-typedef

typedef I have a class template size_t N size_t M class Matrix .... I want to make a typedef which creates a Vector column.. creates a Vector column vector which is equivalent to a Matrix with sizes N and 1. Something like that typedef Matrix N 1 Vector.. a Matrix with sizes N and 1. Something like that typedef Matrix N 1 Vector N Which produces compile error. The following creates..

How can I implement a RESTful webservice using C++?

http://stackoverflow.com/questions/298113/how-can-i-implement-a-restful-webservice-using-c

intensive Web Service say we are making really big Matrix computations so I've thought that the way to go is coding it..

How to properly overload the << operator for an ostream?

http://stackoverflow.com/questions/476272/how-to-properly-overload-the-operator-for-an-ostream

the relevant part of my matrix class namespace Math class Matrix public ... friend std ostream operator std ostream stream const.. ... friend std ostream operator std ostream stream const Matrix matrix And the implementation using namespace Math std ostream.. And the implementation using namespace Math std ostream Matrix operator std ostream stream const Matrix matrix ... This is..