使用matlab过滤基于条件的数据 [英] Filtering of data based on condition using matlab

问题描述

我有 ref 值作为

ref = [9.8 13 10.51 12.2 10.45 11.4]

和在值中as

and In values as

In = [10.7 11 11.5 11.9 12]

我想要做以下两件事：

I want to do following two things :

1. 识别哪个在值中最接近与 ref 值匹配的值，然后在
   
2. 之后检查匹配的 In 的值低于或高于 ref 的值。如果它比在array1中保存的低，并且如果它比在array2中保存的更高的话。
   

1. Identify which In value closest matches with ref value and then after
2. To check whether the matched In value is lower or higher than ref value. If it is lower than saved in array1 and if it is higher than saved in array2

推荐答案

查看下面的代码片段作为许多解决方案之一：

See the following code snippet as one of many solutions:

% it would be a much better style 
% to initialize the result vectors here properly!
a1 = [];
a2 = [];

for i=1:length(P_in)
    [value, ind] = min(abs(P_in(i) - P_ref));

    if P_in(i) <= P_ref(ind)
        a1 = [a1 P_in(i)];
    else
        a2 = [a2 P_in(i)];
    end;
end;

与给定的向量

with the given vectors

P_ref = [9.8 13 10.51 12.2 10.45 11.4];
P_in = [10.5 11 11.5 11.9 12];

我得到以下结果：

I get the following result:

array1 = [10.5000   11.0000   11.9000   12.0000]
array2 = [11.5000]

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