![]() ![]() Since you seem to be iterating over the rows of the matrix, maybe you can tell us more about what you want to do with those logical indices?Īlso, you can get the unique rows of your matrix by a simple call to unique: julia> A = vcat((a,b,a,a,a,a,b,b,b). A 5 5 7 8 B 5 7 7 I want all the positions of the numbers of B that are in A, except if they are dubbled in A, then I only want the first one. Using filter! reduces the use of temporary arrays. In contrast, Julia provides the higher order functions filter and filter!, allowing users to write filter(z->z>3, x) and filter!(z->z>3, x) as alternatives to the corresponding transliterations x and x = x. The values at logicArray(i) are true where the elements of the first array inArraySet. In this table, the first element is a number, the. In MATLAB, an idiomatic way to remove unwanted values is to use logical indexing, like in the expression x(x>3) or in the statement x(x>3) = to modify x in-place. ismember returns a logical array logicArray the same size as inArraySet. Variables can be of different sizes and data types, but all variables must have the same number of rows. Then it calls an internal binary search routine passing in A and sorted B average complexity of that is probably length (A) log2 (length (B)). If necessary it sorts it, which does not apply in your described case. Note that logical indexing creates a temporary array (the vector saving the indices), potentially leading to slower than necessary code if they are created in a hot loop. The ismember code first checks the array with issorted (B), which is O (length (B)). = bt_edges),dims=2)Īnd return a logical vector like in the MATLAB code. broadcasted uval = all(in.(bt_edges',bt_edges),dims=2) Create a table, A, of gender, age, and height for. ismembertol treats elements that are within tolerance as equal and determines that all of the elements in x are members of y. Use ismembertol to perform the comparison using a small tolerance. Elsewhere, the array contains logical 0 ( false ). lia ismember (x,y) lia 6x1 logical array 0 1 1 1 1 0. I can’t see much difference between the two: using BenchmarkTools Description example Lia ismember (A,B) returns an array containing logical 1 ( true) where the data in A is found in B. ![]()
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