MATLAB: How to save a structure file into a text file

MATLABsavestructurestext file

I have a struct file with 3 fields(x,y and z) . Each field has many data points. I want to save them to a text file like

(x1 ,y1, z1)

(x2, y2, z2)

……………..

Like this.

Plese help me on how can i save them into a text file.

Best Answer

From my understanding, you want to save txt file with data points

Refer fprintf

As an example

s=struct('x',[1,2,3],'y',[4,5,6],'z',[7,8,9]);  % structure
fid=fopen('new.txt','w');  % create txt file
for i=1:length(s.x)
    fprintf(fid,'(%f,%f,%f)\n',s.x(i),s.y(i),s.z(i)); % write data file in required format
end
fid=fclose(fid); % close the file 
type new.txt  % display the txt in file

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fid = fopen('file1.txt');
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fclose(fid);
celldisp(A)
save file2 A

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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".

Best Answer

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