how to reverse a matrix in matlab Learn how to use flip function to reverse the order of elements in a vector matrix or multidimensional array along a specified dimension See examples syntax and input arguments for flip and related functions
You can use the functions flipud and fliplr Here s the code Theme Copy A 2 4 7 7 8 5 A Left Right fliplr A A Up Down flipud A In the command window In this video a logic and program to reverse matrix in MATLAB is discussed For easy understanding a 3x3 order matrix is considered 0 00 Intro0 28 Logic to
how to reverse a matrix in matlab
how to reverse a matrix in matlab
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Let A be an matrix of size n n If I want to extract its diagonal I do diag A Actually I want the opposite diagonal which would be A n 1 A n 1 2 A n 2 3 MATLAB uses Gauss elimination to compute the inverse of a general matrix full rank non sparse without any special properties using mldivide and this is n 3 where n is the size of the matrix So in your case n 5000 and there are 1 25 x 10 11 floating point operations
3 Answers Sorted by 13 For a row use fliplr a for column use flipud a answered Mar 5 2013 at 19 47 Yauhen Yakimovich 14 2k 8 61 68 And more generally you could use flipdim a dim Where dim is the dimension dim 1 flips rows dim 2 flips columns David G Mar 6 2013 at 0 07 7 another option is to use indexing a end 1 1 Once you have grouped all your terms into a 2 times 2 matrix whatever the programming language you don t need to use the inverse because there is in this case an explicit formula pmatrix a c b d 1 dfrac 1 Delta pmatrix d b c a where Delta ad bc determinant
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In MATLAB we can utilize the indexing method to find inverse of a given vector In this method the elements of the vector are arranged in the reverse order using their indexing Example Here is an example to explain how the indexing method is Learn how to use fliplr function to reverse the order of elements in a vector matrix or multidimensional array See examples syntax and tips for flipping arrays in different directions
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