Comparing contents of structures

Question

Jared 2013-1-23

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/59590-comparing-contents-of-structures

A little background info: in a Matlab GUI, I load the files from a directory into a listbox. I have a structure with 8 possible file names and the "display name" that each filename maps to. This display name is what is populated in the listbox.

label{1,1}=file1.csv
label{1,2}=Display 1
label{2,1}=file2.csv
label{2,2}=Display 2

With the following code, I am trying to determine which files are selected, determine the actual file name, and load the files into an originally empty data structure.

data{1,8}={};

for i=1:length(index_selected)
  for j=1:8 %8 possible files
      if strcmp(handles.list_names{index_selected(i)},labels{j,2})==1
          if isempty(data{j})==1
              fid=fopen(labels{j,1});
              data{j}=textscan(fid,'%s%s%u%f%f%f%f%u','Delimiter',',',...
                  'HeaderLines',1);
              fclose(fid);
          end
      end
  end
end

I know strcmp isn't going to work as I have it, but it illustrated what I'm going for. The main thing I am struggling with is how to get a string of the display name of a selected index.

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Answer 1

Cedric 2013-1-23

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https://ww2.mathworks.cn/matlabcentral/answers/59590-comparing-contents-of-structures#answer_72070

编辑：Cedric 2013-1-23

在 MATLAB Online 中打开

Not sure that I fully understand (it's late), but note that strcmp() and strcmpi() do work on cell arrays. I illustrate that with a basic example:

 NL = {'file1.csv', 'Label 1'; ...            % Names and labels
       'file2.csv', 'Label 2'; ...
       'file3.csv', 'Label 3'} ;
 selected = {'Label 1', 'Label 3'} ;
 for ii = 1 : numel(selected)
     match = strcmp(selected{ii}, NL(:,2)) ;
     fprintf( 'Filename for "%s": %s.\n', selected{ii}, NL{match,1}) ;
 end