Select from 2D Array by 2 criteria - Matlab

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Sara Aldeeb
Sara Aldeeb 2017-3-15
编辑： Guillaume 2017-3-15
I have a 15 * 2 array where the first column represents the area and the second column represents the corresponding circularity to the 15 objects. I need to select the row with maximum area while applying the following condition for the circularity to be > 0.9 and <= 1.2
Example:
  • Area Circularity
  • ----- -----------
  • 22041 1,1703
  • 23458 2,8425
  • 155 1,4165
  • 37 2,1089
  • 215 1,5692
  • 41 1,0549
  • 659 1,7144
  • 64 1,0508
  • 3 0,3092
  • 584 1,2543
  • 26 1,1132
  • 396 2,9046
  • 1 0
  • 3 0,8488
  • 4 0,4638
  • Expected Result:
  • 22041 1,1703

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采纳的回答

James Tursa
James Tursa 2017-3-15
编辑：James Tursa 2017-3-15
Try this:
y = your 2D matrix
x = y(:,2) > 0.9 & y(:,2) <= 1.2;
z = y(x,:);
[~,k] = max(z);
result = z(k,:);

更多回答（1 个）

Guillaume
Guillaume 2017-3-15
编辑：Guillaume 2017-3-15
filteredarray = yourarray(yourarray(:, 2) > 0.9 & yourarray(:, 2) <= 1.2, :); %filter unwanted rows
[~, maxrow] = max(filteredarray(:, 1)); %find location of max in what's left over
result = filteredarray(maxrow, :) %get the row at location

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