Circshift

Given an array, it is possible to imagine a virtual array formed by padding the original array out in all directions. Valid subscripts for this virtual array range through all the negative and positive integers, without regard to the size of the original. This function implements this idea.The...


Platforms: Matlab

Uses fft to calculate the circular cross correlation of two periodic signal vectors.This is equivalent to xc(k)=sum(u1.*circshift(u2,k)), but much faster (on the order of 500 times faster for a 1024 point signal).The package also includes two examples. One checks the calculation against the...


Platforms: Matlab

RANDBLOCK - randomize blocks of a matrixR = RANDBLOCK(M,S) randomizes the matrix M by dividing M into non-overlapping blocks of the size specified by S, and shuffling these blocks. M can be a N-D matrix.The number of elements in S should match the number of dimensions of M, or S can be a scalar...


Platforms: Matlab

In short:normshift function- fast and efficient multi-dimensional and multi type, with only zero bound assumption.imshift- designated to be used with images. Capable to shift several images at once, user definable boundaries assumptions.While sirchift is fast and all types and input dimentions...


Platforms: Matlab

The class ndSparse defined in this submission will give a lot of the functionality of N-dimensional sparse arrays for N possibly greater than 2. However, it should really be thought of as a way of starting with an ordinary MATLAB sparse matrix and reshaping it to have N dimensions. In other...


Platforms: Matlab

Anyone who is interested in puzzle solving using Matlab might appreciate this simple code. It stems from a need to solve a grid puzzle posed by a fellow geocacher here in Australia. (Look to GC2YWE1 Minimax on the geocaching website for further details, or if you don't know what geocaching is :-)...


Platforms: Matlab