Vote. Start Hunting! All possible combinations of 2 vectors.. a) If the set consists of 2 vectors, a and b, you can execute the following code: b) If the set consists of 2 or more vectors, you can use the Neural Network Toolbox function COMBVEC to achieve the desired result. Accepted Answer: Matt Fig. Learn more about combvec, vector, combinations, permutations MATLAB There are several ways to obtain all possible combinations of a set of vectors. I have a quick question. This is why I love it. 0 ⋮ Vote. nchoosek. MathWorks is the leading developer of mathematical computing software for engineers and scientists. combos = combntns(set,subset) returns a matrix whose rows are the various combinations that can be taken of the elements of the vector set of length subset.Many combinatorial applications can make use of a vector 1:n for the input set to return generalized, indexed combination subsets.. He wanted to take every combination of one value from each of three distinct vectors. Let me introduce you an example: Lets suppose I have 6 variables for example(1,2,3,4,5,6), it means there will be 63 combinations without repeating any. Based on your location, we recommend that you select: . For example, ... Find the treasures in MATLAB Central and discover how the community can help you! 1. I'm trying to generate rapidly a matrix with all combinations of 2 vectors. How to work MATLAB built in function nchoosek(n,k) to calculate more than one combinations? Thanks for the answer. Syntax. For example, if. How to do I calculate the combinations of them? Skip to content. https://www.mathworks.com/matlabcentral/answers/98191-how-can-i-obtain-all-possible-combinations-of-given-vectors-in-matlab#answer_107541, https://www.mathworks.com/matlabcentral/answers/98191-how-can-i-obtain-all-possible-combinations-of-given-vectors-in-matlab#comment_593146, https://www.mathworks.com/matlabcentral/answers/98191-how-can-i-obtain-all-possible-combinations-of-given-vectors-in-matlab#answer_252633, https://www.mathworks.com/matlabcentral/answers/98191-how-can-i-obtain-all-possible-combinations-of-given-vectors-in-matlab#comment_470223, https://www.mathworks.com/matlabcentral/answers/98191-how-can-i-obtain-all-possible-combinations-of-given-vectors-in-matlab#comment_481936, https://www.mathworks.com/matlabcentral/answers/98191-how-can-i-obtain-all-possible-combinations-of-given-vectors-in-matlab#comment_797057, https://www.mathworks.com/matlabcentral/answers/98191-how-can-i-obtain-all-possible-combinations-of-given-vectors-in-matlab#answer_300002, https://www.mathworks.com/matlabcentral/answers/98191-how-can-i-obtain-all-possible-combinations-of-given-vectors-in-matlab#comment_1057361. hey SW, this code is great, just the thing i was looking for! Create all combinations of a vector. How to do I calculate the combinations of them? Thanks, it took quite some effort to find this answer. I did MATLAB: All possible combinations of vectors of unknown quantity and length. Follow 98 views (last 30 days) Artyom on 22 Nov 2012. Learn more about combination, permutation MATLAB. Tags combinations; See Also. Binomial coefficient or all combinations . I managed to come up with a piece of code which uses the 'combvec' instruction in Matlab. ... Find the treasures in MATLAB Central and discover how the community can help you! Vote. All possible combinations of 0's and 1's. Learn more about combinations I have a challenging task that I am not able to solve so far: I have a vector X of 'n' elements (in my case those are X coordinates) and I have another vector Y of 'm' elements (in my case Y coordinate). I have one vector and one number. combinations for loop MATLAB. Note that MathWorks does not guarantee or warrant the use or content of these submissions. combos = combntns(set,subset) returns a matrix whose rows are the various combinations that can be taken of the elements of the vector set of length subset.Many combinatorial applications can make use of a vector 1:n for the input set to return generalized, indexed combination subsets.. I'm working on the classification of bridge damages. Other MathWorks country sites are not optimized for visits from your location. The issue I'm having is that if I use combvec() then I have to hardcode the vectors into it, which doesn't work for if there are more than 2 vectors. to avoid repeat combinations in the form of [20 30; 30 20], And to remove self-combinations such as [20 20]. The most hokey way I can think of is to have one loop and then have counts for how many times I have used each vector to build the combinations. I have a system with x variables and I want to obtain by using MATLAB a combination of all of them in all the possible groups. The combntns function provides the combinatorial subsets of a set of numbers. Accelerating the pace of engineering and science. no_inp=3 % number of inputs we want...in this case we have 3 inputs (a,b,c). So the I want the combinations of [1 2] and [1 2 3] which are [1 1;1 2;2 1;2 2;3 1;3 3]. Start Hunting! Unable to complete the action because of changes made to the page. c) If Neural Network Toolbox is not available, you can achieve the desired result from MATLAB Central file exchange* function through the following link: http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=10064. Based on your location, we recommend that you select: . So the I want the combinations of [1 2] and [1 2 3] which are [1 1;1 2;2 1;2 2;3 1;3 3]. A=[2 5 8 9]; However, I'm not sure that's what you are asking since you've included [1 1 1] as a possible combination of [1 2 3] - I have no idea how [1 1 1] is a combination of [1 2 3] (though by extension of that logic, I'm not sure why you don't include [2 2 2] and [3 3 3] in your list, as well as numerous other things if you're going to repeat elements) Now, this could be done easily with some nested for loops, but that really does violate the spirit in which such challenges are issued. https://www.mathworks.com/matlabcentral/answers/357969-using-recursive-function-to-calculate-all-possible-peptide-combinations#answer_282766, https://www.mathworks.com/matlabcentral/answers/358673-how-is-it-possible-to-check-for-every-possible-order-of-16-numbers#answer_283430, . I actually ended up finding another way of doing it, and was about to come comment. If you use the numeric equivalent then num_diff_vals would be the number of vectors, and you would use the. I have n incoming vectors of random sizes. Other MathWorks country sites are not optimized for visits from your location. let's suppose I want to find all combinations of vectors , so I have as for example in input a matrix. C = nchoosek(n,k) C = nchoosek(v,k) Description. Choose a web site to get translated content where available and see local events and offers. all possible combinations of three vectors. I have n incoming vectors of random sizes. Learn more about combinations, matrix columns combinations, allcomb Learn more about combinations MATLAB. This worked for me (probably the same thing that's going on in the "ALLCOMB" function that was suggested): combinations = cellfun(@(x) x(:), combinations. There is a function called combnk that will enumerate combinations for you. Follow 104 views (last 30 days) Artyom on 22 Nov 2012. C = combnk(v,k) returns a matrix containing all possible combinations of the elements of vector v taken k at a time. a) If the set consists of 2 vectors, a and b, you can execute the following code: [A,B] = meshgrid(a,b); How to generate combinations of n vectors?. All possible combinations of 2 vectors. ... say a, and I want to find all possible vectors B of 0's and 1's for which b <= a, for all b in B. For example I have 2 incoming vectors of size 2 and 3. Hi everyone. lets say i have 3 elements and i the possible values are 0 1 2 so the matrix would be Reload the page to see its updated state. There are several ways to obtain all possible combinations of a set of vectors. I just want to creat a new vector Z with n*m rows and 2 colums that lists within all possible combinations of points on the XY Cartesian plane. This MATLAB function takes any number of inputs, Matrix of N1 (column) vectors Matrix of N2 (column) vectors 0. a=[1 2 3] b=[1 2 3] c=[1 2 3], You may receive emails, depending on your. Edited: Guillaume on 5 Mar 2017 Accepted Answer: Guillaume. 1. Find the treasures in MATLAB Central and discover how the community can help you! Hi everyone. MathWorks is the leading developer of mathematical computing software for engineers and scientists. Learn more about combvec Deep Learning Toolbox MATLAB function: all combinations in a vector function [vout len_array] = combn_all(v, k) % combn_all All combinations of the N elements in V. % Inputs: v, a row or column vector, % k, a scalar or vector, see the MATLAB built-in function % combnk for details % % Outputs: vout, a cell array n … found it without even asking. Learn more about combvec, vector, combinations, permutations MATLAB was looking for answer of a different question. I would like an "easy" way to get all the possible combinations of n pairs of 2 elements (one from each vector) without repeating any element, and place them in … % NumberOfCombinations by N matrix. My colleague walked into my office with a MATLAB question, a regular pasttime for us here at the MathWorks. Learn more about combinations Reload the page to see its updated state. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. Accepted Answer: Matt Fig. Description. Accelerating the pace of engineering and science. The damage is expressed with a qualitative number ranging from 1 to 5 (the first vector) CR=1:5, the other vector is the position of damage on the bridge ranging also it from 1 to 5 (a fifth of the length per time). Choose a web site to get translated content where available and see local events and offers. However, I'm not sure that's what you are asking since you've included [1 1 1] as a possible combination of [1 2 3] - I have no idea how [1 1 1] is a combination of [1 2 3] (though by extension of that logic, I'm not sure why you don't include [2 2 2] and [3 3 3] in your list, as well as numerous other things if you're going to repeat elements) You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. You may receive emails, depending on your. Lets say i want to form a matrix with all possible combinations of some acceptable value, eg. Toggle Main ... How can I obtain all possible combinations of given values in vector ? All possible combinations of 2 vectors. 1 ⋮ Vote. C = nchoosek(n,k) where n and k are nonnegative integers, returns .This is the number of combinations of things taken at a time.. C = nchoosek(v,k), where v is a row vector of length n, creates a matrix whose rows consist of all possible combinations of the elements of v taken at a time. Any questions, issues, or complaints should be directed to the contributing author. For example I have 2 incoming vectors of size 2 and 3. Description. Similarly if I want to build them manually, I have to use two for loops, which won't work for more than 2 vectors. Follow 3 views (last 30 days) hezzam annis on 5 Mar 2017. Matrix C has k columns and n!/((n – k)!k!) 1 ⋮ Vote. https://in.mathworks.com/matlabcentral/answers/360302-how-to-generate-combinations-of-n-vectors#answer_284829, https://in.mathworks.com/matlabcentral/answers/360302-how-to-generate-combinations-of-n-vectors#comment_491094. More information about COMBVEC function can be obtained form the following link: http://www.mathworks.com/help/nnet/ref/combvec.html. I want to obtain all possible combinations of a set of vectors. Each row is unique. 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