index.m - create a list of the indices and values of an array

Create a list where each value (content) of an array is displayed together with its index.
1.1K Downloads
Updated 26 May 2009

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This function displays each value of an array together with its index. It is possible to ignore zeros and/or NaNs and/or to sort the list according to value. The values can be integers or floating point numbers.

EXAMPLES:

>> a=[2,3,NaN;1,2,4;7,0,9];

>> index(a,'sorted')

ans =
3 2 0
2 1 1
1 1 2
2 2 2
1 2 3
2 3 4
3 1 7
3 3 9
1 3 NaN

>> index(a,'sorted','nonans','nozeros')

ans =
2 1 1
1 1 2
2 2 2
1 2 3
2 3 4
3 1 7
3 3 9

Cite As

Georg Stillfried (2024). index.m - create a list of the indices and values of an array (https://www.mathworks.com/matlabcentral/fileexchange/21330-index-m-create-a-list-of-the-indices-and-values-of-an-array), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2007b
Compatible with any release
Platform Compatibility
Windows macOS Linux
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Version Published Release Notes
1.1.0.0

faster through ind2sub

1.0.0.0

improved speed for large arrays