删除Matlab中的特定行 [英] Delete Specific Rows in Matlab

问题描述

我有一个相当大的2x2矩阵，其中包含日期和温度.有大量的NaN和不正确的数据.我使用find来获取包含错误数据的索引.这些索引存储在另一个变量中.如何删除与索引对应的行(日期和值)? 谢谢.

I have a fairly large 2x2 matrix containing date and temperatures. There is a cluster of NaNs and incorrect data. I used find to get the index that contains the incorrect data. These indexes are stored in another variable. How do i remove the rows (date and value) corresponding to the indices? Thanks.

推荐答案

fairly large 2x2 matrix毫无意义.

这是MATLAB文档的一部分

This is part from MATLAB documentation

通过将空数组[]分配给这些行或列，可以从矩阵中删除行和列.从

You can delete rows and columns from a matrix by assigning the empty array [] to those rows or columns. Start with

A = magic(4)
A =
    16     2     3    13
     5    11    10     8
     9     7     6    12
     4    14    15     1

然后，使用删除A的第二列

Then, delete the second column of A using

A(:, 2) = []

这会将矩阵A更改为

A = 
   16    3   13
    5   10    8
    9    6   12
    4   15    1

您还可以一次删除多个行/列:

Also you can delete multiple rows/columns at once:

A([1 3],:)=[]
A =
    5    10     8
    4    15     1

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