子集Matlab的行,其特定列的值大于零 [英] Subsetting rows from Matlab for which specific column has value greater than zero
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问题描述
我想从第三列中的值大于零的矩阵中对行进行子集化.例如,我有一个矩阵:
I want to subset rows from matrix for which the value in third column is greater than zero. For example, I have a matrix :
test =
1 2 3
4 5 0
4 4 1
4 4 0
现在我想对其进行子集化,以便拥有
Now I want to subset it so that I have
subset =
1 2 3
4 4 1
关于如何在matlab中做到这一点的任何快速建议?
Any quick suggestion on how I can do this in matlab?
推荐答案
简单地为每个要保留的行创建一个逻辑数组,并将其作为索引传递给行:
Simply make a logical array that is true for every row you want to keep, and pass it as the index to the rows:
subset = test(test(:,3)>0, :)
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