Problem 2091. return row and column indices given 2 values which define a range

Created by Marcel

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Inspired by problem http://www.mathworks.co.kr/matlabcentral/cody/problems/856-getting-the-indices-from-a-matrice Inputs: - matrix A, lower limit, upper limit Ouputs: - indices of matrix elements which are bigger than or equal to lower limit and smaller than upper limit

A little complication: let your function be able to deal with a random order of the input arguments.

If all input arguments have the same size, assume that the first argument is the "matrix" with value(s).

Don't use "find" and don't use "regexp".

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256 Solutions
37 Solvers

Last Solution submitted on Mar 02, 2020

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2 Comments

2 Comments

shahriar memaran on 26 Mar 2017

last test suit gives an error:"'Error using assert The condition input argument must be a scalar logical. Error in TestPoint11 (line 5) assert(and(R9==1,C9==1))"
also even when I'm using find just to check the results of test suits some of them fail. please fix it ... Thank you !

Nikolaos Nikolaou on 10 Sep 2019

still problem with test suit
x2=3;
x3=9;

[fr1,fc1]=find(and(x1>=x2,x1<x3))

fails

Solution Comments

Solution 1145706

1 Comment

1 Comment

shahriar memaran on 26 Mar 2017

My bad on the comment. But still test suits have problems:
#1: assumes x2 is the lower limit and x3 is the upper limit while all other take x2 as upper limit
#4 same issue

Solution 380871

1 Comment

1 Comment

Marcel on 8 Jan 2014

In my own solution I did not use ind2sub.

Solution 380767

2 Comments

2 Comments

Marcel on 8 Jan 2014

Nice solution, I overlooked the potential usage of ind2sub.

J.R.! Menzinger on 9 Jan 2014

You should use 'varargin' here ;-)

take a look: http://www.mathworks.de/matlabcentral/cody/problems/2091-return-row-and-column-indices-given-2-values-which-define-a-range/solutions/382339

Solution 380571

1 Comment

1 Comment

Marcel on 8 Jan 2014

using varargin is also a good suggestion. Thanks.

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Problem 2091. return row and column indices given 2 values which define a range

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Problem 2091. return row and column indices given 2 values which define a range

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