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Say we have a matrix of size 100x3
How would you shuffle the rows in MATLAB?
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randperm(n,k) returns a row vector that contains “k” number of unique integers that are selected randomly from 1 to n. Parameters: This function accepts two parameters which are illustrated below: n: This is the specified number up to which a random number is going to be generated from “1” without any repetition.
To sort the elements of a vector randomly you can use the RANDPERM() function. RANDPERM(n) returns a random permutation of the integers 1:n.
Description. B = sortrows( A ) sorts the rows of a matrix in ascending order based on the elements in the first column. When the first column contains repeated elements, sortrows sorts according to the values in the next column and repeats this behavior for succeeding equal values.
You can use numpy. random. shuffle() . This function only shuffles the array along the first axis of a multi-dimensional array.
To shuffle the rows of a matrix, you can use RANDPERM
shuffledArray = orderedArray(randperm(size(orderedArray,1)),:); randperm will generate a list of N random values and sort them, returning the second output of sort as result.
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This can be done by creating a new random index for the matrix rows via Matlab's randsample function.
matrix=matrix(randsample(1:length(matrix),length(matrix)),:); If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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