I wanted to know, if it's possible to print a string followed by a matrix, written in the classic form, for example:
5 5 9
>>your matrix is M = 1 4 2
2 1 3
using fprintf/sprintf.
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1 Answer
If your matrix doesn't have to be on the same line as the text, you can do something as simple as replacing ; with \n in the output of mat2str:
A=[1 2 3; 4 5 6; 7 8 9];
intro_str = 'Your matrix is:\n';
sprintf([intro_str strrep(mat2str(A),';','\n ')])
Your matrix is:
[1 2 3
4 5 6
7 8 9]
If, however, you want to have them on the same line, the only way I see how this can be done is by computing the amount of tabs (\t) or spaces you need on every "non-intro" line, approximately like this:
A=[1 2 3; 4 5 6; 7 8 9];
intro_str = 'Your matrix is: ';
%// ntabs = ceil(length(intro_str)/3);
%// tab_blanks = cellstr(repmat('\t',size(A,2),ntabs));
spaces = blanks(length(intro_str));
space_blanks = repmat(spaces,size(A,2),1);
mid_row = ceil(size(A,1)/2);
%// tab_blanks(mid_row) = {intro_str};
space_blanks(mid_row,:) = intro_str;
final_str = [space_blanks repmat('%u\t',size(A,1),size(A,2)) repmat('\n',size(A,1),1)]';
final_str = horzcat(final_str(:))';
sprintf(final_str,A(:))
ans =
1 4 7
Your matrix is: 2 5 8
3 6 9
2 Comments
user5512412
Both the solution you proposed will be useful:thank you for the patience to answer me for the second time , @Dev-iL : )