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How can I replace every element of a matrix with a special character to hide the element

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Sahil Bajaj
Sahil Bajaj 2015-11-26
回答： Rick Rosson 2015-11-29
I have a nxn matrix and want to hide the elements and replace them with a special character
Example
1 2 3
4 5 6
7 8 9
is now
* * *
* * *
* * *

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采纳的回答

Rick Rosson
Rick Rosson 2015-11-29
x = magic(3);
y = repmat('*',size(x));
disp(y);

更多回答（2 个）

Rick Rosson
Rick Rosson 2015-11-27
x = magic(3);
x(x<7) = NaN;
disp(x);
Image Analyst
Image Analyst 2015-11-27
Try this, using fprintf():
m = [...
1 2 3
4 5 6
7 8 9]
[rows, columns] = size(m);
for row = 1 : rows
for col = 1 : columns
fprintf('* ');
end
fprintf('\n');
end
and this.

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