how to select desired row

FIR
2011 11 4
2 个回答
回答已采纳
12 次查看（30 天）

0 个投票

I have a 5 columns of data
data =
col1 col2 col3 col4 col5
1 3 0.9 0.02 94
2 4 01 0.05 93
3 1 2 0.03 94
1 3 5 0.236 97
4 5 10 0.059 69
2 10 02 0.02 89
now i want to select the values greater that 90 which is 5th column
and want to dispaly it for ex i want to dispay as
i have totally 900 rows and 5 column of data,please help
1 3 0.9 0.02 94
2 4 01 0.05 93
3 1 2 0.03 94
1 3 5 0.236 97
next i have two onws in column 1 i want to select the one corresponging to the value in column 5 which has greater value
the output must be
2 4 01 0.05 93
3 1 2 0.03 94
1 3 5 0.236 97

请先登录，再回答此问题。

 采纳的回答

Sven
Sven 2011-11-4

0 个投票

A = [1 3 0.9 0.02 94
2 4 01 0.05 93
3 1 2 0.03 94
1 3 5 0.236 97
4 5 10 0.059 69
2 10 02 0.02 89 ]
% Get only those with col5 above 90
myMask = A(:,5)>90;
B = A(myMask,:)
% Sort everything by col5, descending
sortedB = sortrows(B,-5);
% Get the index of the first unique occurence in col1
[~,uniqueIdxs] = unique(sortedB(:,1));
% Get your final output
finalResult = sortedB(uniqueIdxs,:);

更多回答（1 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Numbers and Precision 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by