Question

我对这类代码有疑问：

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

这是我的问题的再现。在这种情况下，my_variable等于"First"。但我希望"A"然后"B"然后"C"来自名为"First"的变量。

根据我的理解，此代码应执行以下操作：

第一步：for gr = Group表示gr = First to Second
第二步：current = gr;表示当前=第一
第3步：for number = 1:numel(current)表示数字= 1：3（“第一”中的元素数量）
第4步：my_variable(number) = current(number);表示my_variable = First（1）=“A”

而不是我my variable等于"First"或"Second"。

我希望你理解我的意思。

P.S。 string arrays我使用的是双引号（" "），例如First = ["A","B","C"];，只能在Matlab 2016b或更高版本中使用。

Answer 1

您应该使用cell arrays执行此操作：

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

对于first和second，您还可以使用字符串数组：

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

在MATLAB中从其他变量创建变量：具有再现的代码

1 个答案: