具有名称的 Matlab 单元格

Question

注意：如果你能指出一个没有“eval”的解决方案，那就太好了！！！ 如果没有，我也会很感激:-) 好吧，我有一个单元格 (Var_s)，它在第一行字符串和第二行矩阵中：

clc
clearvars
fclose all

L=[11 22 33 44];
M=[1 2 3];
N=[101 102 103 104 105, 95 96 97 98 99];
Var_s=cell(2,3);
Var_s(1,1:3)={'Rn', 'LE', 'O'}; %// The strings are all different and were not created in a loop. 
Var_s(2,1:3)={L, M, N};         %// No correlation is possible.


%//Than I delete all variables because I can work with the cell (Var_s{2,:}) 
%//to execute some computations
clearvars L M N


%//Now I want to save the values which are stored inside of the cells in the 
%//second line of Var_s, Var_s{2,:}, associating to them the names in the first
%//row of the Var_s, Var_s{1,:}, in a .mat file
%//But let's imagine that instead of having size(Var_s{2,:})=3 I would have
%//something like 1000 (but lets keep it simple for now having just 3). 
%//Consequently I want to use a 'for' to do this work! 
%//And it is at this point that the issue appears. How can I use the strings
%//inside Var_s{1,:} to create variables and store them in the .mat file with
%//the values in the cells of Var_s{2,:} associated to them?


filename='Clima';
a=0;
save(filename,'a'); %//Creats the file with a variable a=0


for i=1:length(Var_s(2,:))
genvarname(Var_s{1,i})=Var_s{2,i}; %//The idea is to create a variable using a stringn and associate the values 
save(filename,char(Var_s{1,i}),'-append'); %//The idea is to add the created variable that has the same name in Var_s{1,i}
end
clearvars


%//After all this I could access the variables that are stored in 'Clima.mat' 
%//by their name such as
load('Clima.mat')
Rn
LE
O

而且结果一定是

  Rn = 11 22 33 44
  LE = 1 2 3
  N = 101 102 103 104 105

Answer 1

“将结构字段保存为单个变量”下的docs 到save() 命令几乎完全涵盖了您的问题。要到达那里，您只需创建 struct。

要创建 struct()，您可以在其中动态创建其字段名称，不必更改太多代码。在该循环中创建结构后，只需在循环后使用选项'-struct' 保存结构一次，然后它会自动为该结构中的每个字段生成一个新变量。

s = struct();
for i=1:length(Var_s(2,:))
    s.(Var_s{1,i})=Var_s{2,i}; % struct with dynamic field names
end
save(filename, '-struct', 's');

现在让我们看看，我们存储了什么：

whos('-file', 'Clima.mat')
  Name      Size            Bytes  Class     Attributes

  LE        1x3                24  double              
  O         1x10               80  double              
  Rn        1x4                32  double 

如您所见，我们在该文件中存储了 3 个变量。