fprint f for a matrix

Question

Lee 2013-11-18

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回答： Jan 2023-2-20

say i have a nXm matrix of numbers and i need to print it with tabs between itch element how should it be done?

my matrix is

             0 3 0
             1 2 3

and i want to print it with nonthing where the zeros are and tabs beetween the numbers

i calld he matrix z

and tried this

fprintf('%d\t%d\t%d\n',z(1,1:end))
fprintf('%d\t%d\t%d\n',z(2,1:end))

but its not working

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Walter Roberson 2013-11-18

在 MATLAB Online 中打开

To check: the output should be

[TAB]3[TAB]
1[TAB]2[TAB]3

?

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Answer 1

Sarthak 2023-2-20

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Hi,

You can use a ‘for’ loop to do the same.

Please refer to the following code to understand the problem:

z = [0 3 0; 1 2 3]; 
[n, m] = size(z); 
for i = 1:n 
    for j = 1:m 
        if z(i,j) == 0 
            fprintf('\t') 
        else 
            fprintf('%d\t', z(i,j)) 
        end 
    end 
    fprintf('\n') 
end 

This will produce the following output:

    3 
1   2   3 

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Answer 2

Jan 2023-2-20

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https://ww2.mathworks.cn/matlabcentral/answers/106570-fprint-f-for-a-matrix#answer_1175530

在 MATLAB Online 中打开

x = [0 3 0;  1 2 3];
c = sprintfc('%g', x.');
c(x.' == 0) = {''};
fprintf('\t%s\t%s\t%s\n', c{:})
		3	
	1	2	3
% Or:
s = compose("%g", x);
s(s == "0") = "";
fprintf('\t%s\t%s\t%s\n', s.')
		3	
	1	2	3