MATLAB: How to use data in a structure

arraycell arraysmatrixstructures

Hi,

I used the following code A=importdata('filename'). This worked out great and gave me the data from the file in a structure "A". The structure has a matrix "data" and an array "txt" in it. How do I use that matrix / aray later in the script? I tried to set B=data and C=txt but it gave me the error of unknown variables.

Thanks

Best Answer

If your struct variable is A

B=A.data
C=A.textdata

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MATLAB: How to export a structure to a text file

There is no builtin functionality that will do that transparently, unfortunately. You'll have to build the new file

m = importdata(yourfile);
% mung on m.data here...
fid=fopen('new.txt','w');                   % open a new file for writing
for ix=1:length(m.textdata) 
  fprintf(fid,'%s\n',char(m(i).textdata));  % write the header lines
end
fprintf(fid,'%d ',m.data')                  % then the data
fid=fclose(fid);                            % close the new file..
type new.txt                                % see the new result...

You can overwrite the original file but that's dangerous unless you've thoroughly tested your script/function first, so better to write a new file then rename the old while getting started.

Again, afaik there's no total packaged function that will reproduce the above automagically -- seems like a logical extension but to this point "it ain't happened yet".

MATLAB: How to import .csv data into guide

Did you try csvread()? Or dlmread()?

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MATLAB: How to export a structure to a text file

MATLAB: How to import .csv data into guide

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