从MATLAB中的其他变量创建变量:带复制的代码 [英] Creating variable from other variables in MATLAB: code with reproduction

问题描述

我对这种类型的代码有疑问:

I have a question regarding this type of code:

First = ["A","B","C"];
Second = ["D","E","F"];
Group = ["First", "Second"];
for gr = Group
    current = gr;        
    for number = 1:numel(current)                
        my_variable(number) = current(number);     
    end
end

那是我的问题的再现.例如，在这种情况下，my_variable等于"First".但是我希望它是变量"First"中的"A"然后是"B"然后是"C".

That's the reproduction of my problem. In this case my_variable is equal to "First" for example. But I wanted it to be "A" then "B" then "C" from variable named "First".

据我了解，此代码应执行以下操作:

For my understanding this code should do the following:

• 第一步:for gr = Group表示gr =第一到第二
• 第二步:current = gr;表示电流=第一步
• 第三步:for number = 1:numel(current)表示数字= 1:3(第一"中的元素数)
• 第四步:my_variable(number) = current(number);表示my_variable = First(1)="A"

• 1st step: for gr = Group means gr = First to Second
• 2nd step: current = gr; means current = First
• 3rd step: for number = 1:numel(current) means number = 1:3 (number of elements in "First")
• 4th step: my_variable(number) = current(number); means my_variable = First(1) = "A"

相反，我得到的my variable等于"First"或"Second".

Instead of that I get my variable equal to "First" or "Second".

希望您能理解我的意思.

I hope you understand what I mean.

P.S. 字符串数组我用双引号(" " )(First = ["A","B","C"];)仅在Matlab 2016b或更高版本中可用.

P.S. the string arrays I'm using with double quotes (" ") like First = ["A","B","C"]; are only available in Matlab 2016b or later.

推荐答案

您应使用对于first和second，您还可以使用字符串数组:

For first and second, you can also use the string arrays:

first = ["A","B","C"];
second = ["D","E","F"];
group = {first, second};
for group_ind = 1:numel(group)
    current = group{group_ind};
    my_variable = strings(1,numel(current));
    for number = 1:numel(current)
        my_variable(number) = current(number);
        disp(my_variable)
    end
end

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