How can I make struct with existing variables?

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Giorgi
Giorgi 2014-8-22
编辑： Matt J 2014-8-22
Hi all, Well i have some variables for example alfa, beta and gama, Now I want to make structure that will contain these variables. Can someone give me a code or function with which i will be able to do it.

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采纳的回答

Matt J
Matt J 2014-8-22
编辑：Matt J 2014-8-22
Using structvars ( Available here ).
>> clear
>> a=1; b=2; c=3;
>> s=whos;
>> C=cell2struct({s.name}.',{s.name})
C =
a: 'a'
b: 'b'
c: 'c'
>> structvars(C,0); %copy/paste the output below to the command line
ans =
C.a = a;
C.b = b;
C.c = c;
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Adam
Adam 2014-8-22
Did you follow Matt J's 'Available here' link and add the downloaded location to your path?
Matt J
Matt J 2014-8-22
Though I don't really recommend it, you could also do
>> eval(structvars(C,0).'); C
C =
a: 1
b: 2
c: 3

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更多回答（3 个）

Matt J
Matt J 2014-8-22
编辑：Matt J 2014-8-22
>> save tempFile *
>> S=load('tempFile');
Guillaume
Guillaume 2014-8-22
s = struct('alpha', alpha, 'beta', beta, 'gamma', gamma);
doc struct
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Giorgi
Giorgi 2014-8-22
Well that is fine but if i have more than 30 variables should I write it manually? The problem is that I cant write a code with which it automaticly will assign all variables
Guillaume
Guillaume 2014-8-22
You could dynamically create a structure with 30 field names that are the names of the variables, however I would urge to think whether it's really what you want. How are you going to then use that structure if the field names are created arbitrarily. I would advise against this as your code may easily break in the future because a hardcoded field is not there anymore.
If that's really what you want to do, then structvars from the other answer (you have to download it), or the following function will do it:
function s = variables2struct(varargin)
s = struct;
for var = 1:nargin
s.(genvarname(inputname(var), fieldnames(s))) = varargin{var};
end
end

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Adam
Adam 2014-8-22
编辑：Adam 2014-8-22
myStruct.alfa = alfa;
myStruct.beta = beta;
etc.
Or
myStruct = struct( 'alfa', alfa, 'beta', beta );
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Giorgi
Giorgi 2014-8-22
编辑：Matt J 2014-8-22
Well as you say in txt file I have all variable names, so I measured its length and use cycle here is a code but it does not work any ideas?
a=length(txt(1,:));
for i=1:a
mystruct=struct(txt(1,i),[txt{1,i}]);
end
Adam
Adam 2014-8-22
I could try to give some help further along this line, but I think potentially either of Matt J's solutions would work better so unless neither of them do I'll leave it.

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