How to find index in matlab
For instance, you can examine the even elements in a matrix, find the location of all 0s in a multidimensional array, or replace NaN values in data. You can perform these tasks using a combination of the relational and logical operators. Suppose I have an array, a = [2 5 4 7]. What is the function returning the maximum value and its index? For example, in my case that function should return 7 as the maximum value and 4 as the index. Write max at the command line and press F1 for help (if on a Windows system, other systems will use another key) and read the documentation. indices = find(X) returns the linear indices corresponding to the nonzero entries of the array X. If none are found, find returns an empty, 0-by-1 matrix. In general, find(X) regards X as X(:), which is the long column vector formed by concatenating the columns of X. How I can find index of element in array? Follow 8.412 views (last 30 days) 2017 Accepted Answer: James Tursa. I know, that number, for example, 5, is an element in array X, but I don't know it's index. In Python, I can use: X.index(5) I realized this function, using for loop and if statement, but did Matlab doesn't have build-in similar From Matlab documentation: I = FIND(X,K,'first') is the same as I = FIND(X,K). You only need to indicate 'last' if you want it the other way around. – Phonon Aug 12 '11 at 14:22. both phonon and oli will work. How I can find index of element in array? Follow 8,562 views (last 30 days) Mykhailo Yaroshenko on 8 Nov 2017. Vote. 2 ⋮ Vote. 2. Commented: Stephen Cobeldick on 9 Nov 2017 Accepted Answer: James Tursa. I know, that number, for example, 5, is an element in array X, but I don't know it's index. In Python, I can use: Discover what MATLAB how to find the row index of specific vector in Learn more about matrix array, array, matrix manipulation, matrix . Skip to content. I want find the row index of [-2 1], i.e., [-2 1] is on the second row of [2 0;-2 1;2 3]. how to realize it in matlab? Many thanks! 0 Comments. Show Hide all comments. Sign in to comment. Sign in to answer
How to get the index of a value in a table?. Learn more about table, index
How to get the index of a value in a table?. Learn more about table, index how to find the row index of specific vector in Learn more about matrix array, array, matrix manipulation, matrix find(a==8, 1, 'first') %return index of first of them -- watch out in case there are none find(a==8, 1, 'last' ) %return index of last of them -- watch out in case there were none find(a==8, 1) %whether you get first or last or some other position depends on your MATLAB release What should I do if I want to find the index of 'KU'? string matlab cell-array. share | improve this question. edited Sep 6 '13 at 11:43. Dennis Jaheruddin. 18.2k 5 5 gold badges 47 47 silver badges 89 89 bronze badges. Matlab a more efficient solution to search for strings in a cell array-1.
Indexing into a matrix is a means of selecting a subset of elements from the That's easy to see for this example, but how do you compute linear indices in
How to get the index of a value in a table?. Learn more about table, index how to find the row index of specific vector in Learn more about matrix array, array, matrix manipulation, matrix find(a==8, 1, 'first') %return index of first of them -- watch out in case there are none find(a==8, 1, 'last' ) %return index of last of them -- watch out in case there were none find(a==8, 1) %whether you get first or last or some other position depends on your MATLAB release What should I do if I want to find the index of 'KU'? string matlab cell-array. share | improve this question. edited Sep 6 '13 at 11:43. Dennis Jaheruddin. 18.2k 5 5 gold badges 47 47 silver badges 89 89 bronze badges. Matlab a more efficient solution to search for strings in a cell array-1. ind=knnsearch(data',b) c=data(ind) which returns the index (or array of indices), ind, of the closest element (or elements) in data to the elements listed in b. Note that data is transposed because the set to be searched in needs to be a column vector. If be had multiple elements then it should also be a column vector.
For instance, you can examine the even elements in a matrix, find the location of all 0s in a multidimensional array, or replace NaN values in data. You can perform these tasks using a combination of the relational and logical operators.
How I can find index of element in array? Follow 8.412 views (last 30 days) 2017 Accepted Answer: James Tursa. I know, that number, for example, 5, is an element in array X, but I don't know it's index. In Python, I can use: X.index(5) I realized this function, using for loop and if statement, but did Matlab doesn't have build-in similar
Please click below onto the label to load the interactive demonstration on MATLAB matrix indexing. The selected cells are visualized. A format of a cell is: the linear index is in the superscript while the 2d coordinates are in subscript. The value of a cell equals to its linear index for simplicity.
If it is not possible to make Matlab code for this problem. What other ways can I use to find the index of matrix. Please help me. I would be very much grateful to MATLAB/Octave, Python, Description. doc help -i % browse a.argsort(axis=0), Sort each column, return indices. a.argsort(axis=1), Sort each row, return indices Indexing methods on xarray objects generally return a subset of the original data. indexing works in Fortran or MATLAB, or after using the numpy.ix_() helper:. 19 фев 2017 В Matlab включен Simulink — визуальный редактор для x = [1 3 5 7 9 11]' x > 3 find(x > 3) % Find indices and values on non-zero
24 Jul 2018 See note INDEXING, Python uses 0 (zero) based indexing. While Matlab's syntax for some array manipulations is more compact than 21 Nov 2016 Tried with taking absolute value of the maximum ? I have updated the code, see if that works for you [ff,ind]=max(abs(c)); % finding the index