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Unique (partial) values

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Mario
Mario 2017-9-30
评论： Mario 2017-9-30
Hi all! I have a cell array (imported by xlsread) of this kind:
'0.000000000' '185.47.162.26'
'0.000658000' '185.47.169.249'
'0.000793000' '177.10.146.49'
'0.003146000' '185.47.162.26'
'0.006683000' '185.47.162.26'
Now...i'm interested to select only rows corresponding to the first unique values of second column. So...in this example i need the following output:
'0.000000000' '185.47.162.26'
'0.000658000' '185.47.169.249'
'0.000793000' '177.10.146.49'
Unique function seems not to support a feature like this. Can you help me? Thx in advance! Mario

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回答（1 个）

Walter Roberson
Walter Roberson 2017-9-30
[~, idx] = unique(YourCellArray(:,2), 'stable');
output = YourCellArray(idx, :);

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