Character array with one letter

I want to make an array with one character, and i want the user to be able to write how many. For example:

cha='hello';

cha=upper(cha);

length=length(cha);

now, lets say i want to create an array with only dots and i want it to be as many as 'length' is (in this case 5, so i want this to be shown: ..... ). How do I proceed?

thanks

Answer 1

[Andrei Bobrov]

cha='hello';
cdot = '.';
out = cdot(ones(1,numel(cha)))

Answer 2

[the cyclist]

Here's one way:

L = length(cha);
A = repmat('.',[1 L])

Also, I recommend against defining a variable named "length", because it is a MATLAB command. That often leads to confusion down the road.

Answer 3

[Matt Tearle]

Easy

char(46*ones(size(cha)))

Not so easy

regexprep(char,'\w','.')

:)