WebMay 8, 2024 · Thus, the find method has a running time dictated by the overhead of copying the array and calling find, whereas the loop method time is dictated by how many array elements one needs to visit to find the first non-zero element. Test code: WebJun 27, 2014 · If it is for storing only non-zero elements, MATLAB supports SPARSE matrices. If you need to get row/column indices of non-zero elements of A: Theme Copy [rId, cId] = find ( A ) ; and if you need values as well: Theme Copy [rId, cId, val] = find ( A ) ; If you just need values, you can get them simply with Theme Copy vals = A (A ~= 0) ; 11 …
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WebJul 4, 2024 · find(X) : Return a vector containing the indices of elements find(X,n): Return first n indices of the elements in X find(X,n, Direction): find n indices in X according to … WebFeb 13, 2024 · Index exceeds the number of array elements.... Learn more about fft, error, code, index, array MATLAB. Working on a code to create a spectral analysis FFT test file, based on a given equation. ... % Check if the frequencies with non-zero values correspond to the frequencies used to generate the function. ... " Index exceeds the number of array ... buy electronics in israel
How to find the index of first and last nonzero elements in each …
WebJul 4, 2024 · If you want to find the indices of all the non-zero elements present in the 3-dimensional array you can use [row,col,v] = find (X) where X is our array. This will find … WebMar 18, 2024 · How to quickly find the first non-zero element... Learn more about sparse matrix, first non-zero element ... I want to find the index of the LAST non-zero element in each row in A. For example, I have matrix A = [2 0 0;0 5 0;0 0 1;0 3 0;-1 0 -4]. My code gives the following result: ... Find the treasures in MATLAB Central and discover how the ... WebTest the rows of A for nonzero elements by specifying dim = 2. B = any (A,2) B = 3x1 logical array 1 1 1 Nonzero Elements in Array Page Try This Example Copy Command Create a 3-D array and determine if there are nonzero elements in … cell phone store buying process