WebMar 8, 2024 · If I want to find the correlation matrix, I have to calculate this formula between every two elements of the mesh: rho (element1, element2) = exp (-sqrt (2* (xi-xj)/tx)^2+ (2* (yi-yj)/ty)^2) where tx=200 and ty=1.5. I need guidance regarding the indexing, as correlation between elemets 1 and 3 differs from the correlation between elements 1 and 9 . WebApr 1, 2024 · Using the slice() method is another technique to retrieve the first element of an array in JavaScript. The original array's elements are copied into a new array starting at …
How to index and find the resulting matrix? - MATLAB Answers
WebOct 1, 2012 · For each element I need to find its index, so the computational cost will be O(N^2), which is too much. One possibility is using sparse matrices, e.g. smatr=sparse(ar,1,1:length(ar)) and then index can be retrieved simply as ind=smatr(243) and so on, reducing computational cost to O(N). However, the problem is that in my … WebFeb 12, 2024 · idx = find (floor (data)==val,1) where data is your array and val is what you're looking for, e.g., 8. on 12 Feb 2024 Neither of our current answers work with negative values although that may not be a problem in the OP's use case. The benefit of this answer over mine is that val can be any number of digits. clermont marsilya
While loop to find index of first element to be less than and …
WebFeb 20, 2024 · In order to find the index of an element Stream package provides utility, IntStream. Using the length of an array we can get an IntStream of array indices from 0 … WebMar 30, 2024 · The findIndex () is an iterative method. It calls a provided callbackFn function once for each element in an array in ascending-index order, until callbackFn returns a … A call to index searches through the list in order until it finds a match, and stops there. If there could be more than one occurrence of the value, and all indices are needed, indexcannot solve the problem: Instead, use a list comprehension or generator expression to do the search, with enumerate to get … See more An indexcall checks every element of the list in order, until it finds a match. If the list is long, and if there is no guarantee that the value will be near the beginning, this can slow down the code. This problem can only be completely … See more As noted in the documentation above, using .indexwill raise an exception if the searched-for value is not in the list: If this is a concern, either explicitly check first using item in my_list, … See more blur as ink crossword