# matlab all possible combinations of n vectors

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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 … Learn more about combinations, matrix columns combinations, allcomb 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). to avoid repeat combinations in the form of [20 30; 30 20], And to remove self-combinations such as [20 20]. Matrix C has k columns and n!/((n – k)!k!) Choose a web site to get translated content where available and see local events and offers. Follow 104 views (last 30 days) Artyom on 22 Nov 2012. Find the treasures in MATLAB Central and discover how the community can help you! Learn more about combinations MATLAB. More information about COMBVEC function can be obtained form the following link: http://www.mathworks.com/help/nnet/ref/combvec.html. He wanted to take every combination of one value from each of three distinct vectors. All possible combinations of 2 vectors.. Learn more about combvec Deep Learning Toolbox Follow 3 views (last 30 days) hezzam annis on 5 Mar 2017. 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). ... Find the treasures in MATLAB Central and discover how the community can help you! Tags combinations; See Also. Accelerating the pace of engineering and science. hey SW, this code is great, just the thing i was looking for! Unable to complete the action because of changes made to the page. 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 … Skip to content. Thanks for the answer. I used a combination of repmat and repelem to generate the combinations. Unable to complete the action because of changes made to the page. This is why I love it. 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. was looking for answer of a different question. For example, ... Find the treasures in MATLAB Central and discover how the community can help you! 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. 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, . There is a function called combnk that will enumerate combinations for you. 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. If I have to calculate 10C4(i.e. Based on your location, we recommend that you select: . Description. All possible combinations of 2 vectors. Each row is unique. All possible combinations of 2 vectors. Vote. a) If the set consists of 2 vectors, a and b, you can execute the following code: [A,B] = meshgrid(a,b); lets say i have 3 elements and i the possible values are 0 1 2 so the matrix would be Vote. Accepted Answer: Matt Fig. Note that MathWorks does not guarantee or warrant the use or content of these submissions. 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. 0. ... 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. 1. How to do I calculate the combinations of them? found it without even asking. I have n incoming vectors of random sizes. Lets say i want to form a matrix with all possible combinations of some acceptable value, eg. 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]. Find the treasures in MATLAB Central and discover how the community can help you! For example, if. Learn more about combinations Create all combinations of a vector. let's suppose I want to find all combinations of vectors , so I have as for example in input a matrix. My colleague walked into my office with a MATLAB question, a regular pasttime for us here at the MathWorks. I have a quick question. All possible combinations of 0's and 1's. all possible combinations of three vectors. Any questions, issues, or complaints should be directed to the contributing author. Hi everyone. Other MathWorks country sites are not optimized for visits from your location. Binomial coefficient or all combinations . 1 ⋮ Vote. There are several ways to obtain all possible combinations of a set of vectors. C = combnk(v,k) returns a matrix containing all possible combinations of the elements of vector v taken k at a time. ... Find the treasures in MATLAB Central and discover how the community can help you! 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.. Choose a web site to get translated content where available and see local events and offers. Learn more about combination MATLAB no_inp=3 % number of inputs we want...in this case we have 3 inputs (a,b,c). Other MathWorks country sites are not optimized for visits from your location. MathWorks is the leading developer of mathematical computing software for engineers and scientists. 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. Now, this could be done easily with some nested for loops, but that really does violate the spirit in which such challenges are issued. Toggle Main ... How can I obtain all possible combinations of given values in vector ? Start Hunting! 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) I want to obtain all possible combinations of a set of vectors. Syntax. 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. MathWorks is the leading developer of mathematical computing software for engineers and scientists. 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. For example I have 2 incoming vectors of size 2 and 3. Accepted Answer: Matt Fig. combinations for loop MATLAB. Learn more about combvec, vector, combinations, permutations MATLAB I'm working on the classification of bridge damages. Similarly if I want to build them manually, I have to use two for loops, which won't work for more than 2 vectors. This MATLAB function takes any number of inputs, Matrix of N1 (column) vectors Matrix of N2 (column) vectors I'm trying to generate rapidly a matrix with all combinations of 2 vectors. I have n incoming vectors of random sizes. Description. Start Hunting! There are several ways to obtain all possible combinations of a set of vectors. Learn more about combination, permutation MATLAB. How to generate combinations of n vectors?. C = nchoosek(n,k) C = nchoosek(v,k) Description. 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. % NumberOfCombinations by N matrix. Hi everyone. I actually ended up finding another way of doing it, and was about to come comment. rows, where n is the number of observations in v. MATLAB: All possible combinations of vectors of unknown quantity and length. I have one vector and one number. a=[1 2 3] b=[1 2 3] c=[1 2 3], You may receive emails, depending on your. 1 ⋮ Vote. Based on your location, we recommend that you select: . Reload the page to see its updated state. 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. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. 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) How to do I calculate the combinations of them? 1. 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.. Reload the page to see its updated state. Learn more about combinations nchoosek. How to work MATLAB built in function nchoosek(n,k) to calculate more than one combinations? Edited: Guillaume on 5 Mar 2017 Accepted Answer: Guillaume. The combntns function provides the combinatorial subsets of a set of numbers. If you use the numeric equivalent then num_diff_vals would be the number of vectors, and you would use the. I managed to come up with a piece of code which uses the 'combvec' instruction in Matlab. From the MATLAB doc: " C = combnk(v,k) returns all combinations of the n elements in v taken k at a time." Accelerating the pace of engineering and science. I did You may receive emails, depending on your. 0 ⋮ Vote. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. This worked for me (probably the same thing that's going on in the "ALLCOMB" function that was suggested): combinations = cellfun(@(x) x(:), combinations. Thanks, it took quite some effort to find this answer. For example I have 2 incoming vectors of size 2 and 3. 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]. 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. Vote. Follow 98 views (last 30 days) Artyom on 22 Nov 2012. A=[2 5 8 9]; Learn more about combvec, vector, combinations, permutations MATLAB Learn more about combvec, vector, combinations, permutations MATLAB The combntns function provides the combinatorial subsets of a set of numbers. For example in input a matrix with all combinations of n vectors? optimized... Nov 2012 which uses the 'combvec ' instruction in MATLAB use or content of these submissions choose web. On your location, we recommend that you select: MATLAB learn more about combination MATLAB learn more combinations... To do i calculate the combinations of given values in vector answer_282766, https: #! Treasures in MATLAB c ) of given values in vector i did how to do i calculate combinations... 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Lets say i want to find all combinations of a set of vectors, so i have as for i.... find the treasures matlab all possible combinations of n vectors MATLAB Central and discover how the community can help you and was about to up! We recommend that you select: or content of these submissions 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.