passing strings to a function to call commands

Question

Rashmil Dahanayake 2014-5-22

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/130583-passing-strings-to-a-function-to-call-commands

编辑： Rashmil Dahanayake 2014-5-22

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.

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Yao Li 2014-5-22

编辑：Yao Li 2014-5-22

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}

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Rashmil Dahanayake 2014-5-22

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/130583-passing-strings-to-a-function-to-call-commands#answer_137795

编辑：Rashmil Dahanayake 2014-5-22

在 MATLAB Online 中打开

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);