About save symbolic problem!!

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tony kevine
tony kevine 2015-2-26
评论： tony kevine 2015-2-27
i have a matrix 3by3,and i want to save into txt type,i use the command save,but it give me "Warning: Attempt to write an unsupported data type to an ASCII file.Variable 'D' not written to file. " can anyone help me !! thanks !!

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Sean de Wolski
Sean de Wolski 2015-2-26
I's use evalc to capture the symbolic expression as a string and then write it out:
% Something symbolic
syms x
y = [x sin(x) cos(x)].'*[x sin(x) cos(x)] % some symbolic matrix
%String it
str = evalc('y'); % to string
% Write it
fid = fopen('out.txt','w');
fprintf(fid,str);
fclose(fid);

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