清空筛选条件
清空筛选条件

select the row that contains the minimum of a column

8 次查看（过去 30 天）
dolving
dolving 2014-6-27
回答： Star Strider 2014-6-27
I have this matrix:
results =
0.0260 0.1040 0.0030 0.0246 0.0264 4.8818
0.0430 0.1040 0.0030 0.0194 0.0238 5.0857
0.0600 0.1040 0.0030 0.0164 0.0223 5.2897
0.0260 0.0870 0.0030 0.0245 0.0263 5.0856
0.0430 0.0870 0.0030 0.0194 0.0237 5.2896
0.0600 0.0870 0.0030 0.0167 0.0221 5.4936
0.0260 0.0700 0.0030 0.0246 0.0259 5.2896
0.0430 0.0700 0.0030 0.0194 0.0233 5.4937
0.0600 0.0700 0.0030 0.0164 0.0217 5.6976
0.0260 0.1040 0.0065 0.0331 0.0413 0
0.0430 0.1040 0.0065 0.0269 0.0322 4.0227
0.0600 0.1040 0.0065 0.0207 0.0264 4.4647
0.0260 0.0870 0.0065 0.0330 0.0409 0
0.0430 0.0870 0.0065 0.0268 0.0319 4.4648
0.0600 0.0870 0.0065 0.0208 0.0261 4.9067
0.0260 0.0700 0.0065 0.0330 0.0397 4.4648
0.0430 0.0700 0.0065 0.0269 0.0306 4.9067
0.0600 0.0700 0.0065 0.0208 0.0249 5.3487
0.0260 0.1040 0.0100 NaN 0 0
0.0430 0.1040 0.0100 0.0578 0.0639 0
0.0600 0.1040 0.0100 0.0445 0.0423 0
0.0260 0.0870 0.0100 NaN 0 0
0.0430 0.0870 0.0100 0.0577 0.0628 0
0.0600 0.0870 0.0100 0.0446 0.0411 0
0.0260 0.0700 0.0100 NaN 0 0
0.0430 0.0700 0.0100 0.0576 0.0584 0
0.0600 0.0700 0.0100 0.0445 0.0367 4.8460
I want to select the row that contains the minimum nonzero value of the last column.
I tried:
[minVal rowInd]=min(nonzeros(results(:,6)))
minVal =
4.0227e+003
row_idx =
10
This does give the value i want, but not the right row (it must be row_idx=11).
Any ideas would be welcome!!

请先登录，再回答此问题。

采纳的回答

Guilherme Coco Beltramini
Use an auxiliary variable:
tmp = results(:,6); tmp(tmp==0) = NaN;
[minVal rowInd]=min(tmp)

更多回答（1 个）

Star Strider
Star Strider 2014-6-27
Test for the minimum first, then use find:
min6 = min(results((results(:,6) > 0),6));
ridx = find(results(:,6) == min6);

类别

在 Help Center 和 File Exchange 中查找有关 Numeric Types 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