passing strings to a function to call commands

I'd like to create a function to automate the passing variable names to statement. I tried to create a function to achieve it using is varargin and foo loop. The challenge is to pass unknown number for string names to a function call.

Manual method is as follow.

      Vdc(1,:) = logsout.get('Vdc').Values.Data(:,1) ;
      Vc(1,:) =logsout.get('Vc').Values.Data(:,1) ;
      I_L(1,:) =logsout.get('I_L').Values.Data(:,1) ;

The function I created with errors

function logger(varargin)

% input is in the format logger(Vdc,Vin,Iload)
% where "logsout" is the name of the object stored Vdc,Vin,Iload,IL,,,,
% I want to automatically extract selected variables and store them with 
% the original name

nsize=nargin;
 for k=1:size
 tag=spprintf(varagin(k));
 data(:,1) = logsout.get('Vdc').Values.Data(:,1) ;  % where tag='Vdc'
assignin('base',tag,data);
  end

Any suggestions appreciated.

[Yao Li]

I had a quick look at your codes. At least, size is undefined and spprintf should be sprintf. In addition, varargin should be a cell array, and there is a typo in varagin(k). It should be changed to varargin{k}

Answer 1

[Rashmil Dahanayake]

I figured it out for a certain extent.

    function logdata2=(A)

   % logvar={'Vdc','I_L'};  % pass this to the function

    for z=1:length(logvar)
           xxz(1,:) = logsout.get(logvar{z}).Values.Data(:,1) ;
           assignin('base',logvar{z},xxz);
    end

Now the challenge is instead of using intermediate variable,which contains string characters (ie ' symbol), is it possible to call the function as loadata(Vdc,IL);