如何读取在MATLAB多重结构阵列的具体领域？ [英] How to read specific fields from multiple structure arrays in MATLAB?

问题描述

我已经安排到MATLAB多重结构数组一个非常大的数据集。该结构是这个样子：

I have a very large dataset arranged into multiple structure arrays in MATLAB. The structures look something like this:

Flight1=   

.testpoint = 1
.Mach = 0.8
.Speed = 300
.Cieling = 35000
.Data = [A] % A is an MxN matrix

同样也有多个航班多个测试点。有没有一种方法来检索唯一指定的测试点的数据？例如，我想看看所有的测试点的.Mach = 0.8或者.testpoint = 2的数据？

Similarly there are multiple test points for multiple flights. Is there a way to retrieve the Data of only specified test points? For example I want to look at the Data of ALL the test points whose .Mach = 0.8 or where .testpoint = 2?

我希望我已很清楚。

推荐答案

假设你有一个结构阵列航班，其中航班（K）与你所描述，然后领域的结构：

Assuming you have a struct array Flight where Flight( k ) is a struct with the fields you described, then:

sel = [ Flight(:).Mach ] == 0.8; % select all flights with Mach == 0.8
poitEightMach = Flight( sel );   % selecting them into a separate struct array

sel = [Flight(:).testpoint] == 2;
testPoint2 = Flight( sel );   % select all flights with testpoint == 2

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