How to compare a matrix and make decision on it?
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I want to compare the component of a matrix so that if all the component is zero it will give value=0 and if any one component is 1 ,it will give value=1. All the matrix are not of same size always.For example it may be like this:
1×497 logical array
Columns 1 through 21
0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0
Columns 22 through 42
0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Columns 43 through 63
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Columns 64 through 84
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Columns 85 through 105
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
Columns 106 through 126
0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1
Columns 127 through 147
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Columns 148 through 168
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Columns 169 through 189
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Columns 190 through 210
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Columns 211 through 231
0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Columns 232 through 252
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Columns 253 through 273
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Columns 274 through 294
0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0
Columns 295 through 315
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Columns 316 through 336
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Columns 337 through 357
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0
Columns 358 through 378
0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Columns 379 through 399
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Columns 400 through 420
0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0
Columns 421 through 441
0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0
Columns 442 through 462
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Columns 463 through 483
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Columns 484 through 497
0 0 0 0 0 0 0 0 0 0 0 0 0 0
4 Comments
Walter Roberson
on 16 Jul 2020
Edited: Walter Roberson
on 16 Jul 2020
This does not match the problem statement. The problem statement requires that value = 1 only if any one component of the array is 1, which means that if more than one component is 1 then the result should not be 1.
If "one or more components are 1" is acceptable then
value = any(arr);
Answers (1)
Walter Roberson
on 16 Jul 2020
n = nnz(YourMatrix) ;
if n <= 1
value = n;
else
error('more than one entry is 1, result undefined')
end
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