How can I make struct with existing variables?

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Giorgi
Giorgi el 22 de Ag. de 2014
Editada: Matt J el 22 de Ag. de 2014
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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Matt J
Matt J el 22 de Ag. de 2014
Editada: Matt J el 22 de Ag. de 2014
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;
  3 comentarios
Adam
Adam el 22 de Ag. de 2014
Did you follow Matt J's 'Available here' link and add the downloaded location to your path?
Matt J
Matt J el 22 de Ag. de 2014
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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Más respuestas (3)

Matt J
Matt J el 22 de Ag. de 2014
Editada: Matt J el 22 de Ag. de 2014
>> save tempFile *
>> S=load('tempFile');

Guillaume
Guillaume el 22 de Ag. de 2014
s = struct('alpha', alpha, 'beta', beta, 'gamma', gamma);
doc struct
  2 comentarios
Giorgi
Giorgi el 22 de Ag. de 2014
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 el 22 de Ag. de 2014
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 el 22 de Ag. de 2014
Editada: Adam el 22 de Ag. de 2014
myStruct.alfa = alfa;
myStruct.beta = beta;
etc.
Or
myStruct = struct( 'alfa', alfa, 'beta', beta );
  4 comentarios
Giorgi
Giorgi el 22 de Ag. de 2014
Editada: Matt J el 22 de Ag. de 2014
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 el 22 de Ag. de 2014
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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