why ascii instead of letter?

hi,

I want place 'a' instead of 1 as in :

x=[1 2 3 1]; >> for i=1:4 if x(i)==1 x(i)='a' end end

but the result: 97 2 3 97

why ascii is appearing?

Answer 1

[Walter Roberson]

You have initialized a numeric array rather than a character array. Numeric arrays cannot hold characters as characters. Only cell arrays can mix numerics with characters.

Answer 2

[Fangjun Jiang]

Original x is a double array, but in your for-loop, you assign a char value to its element. So it takes the ASCII value of letter 'a'. see

double('a')

[huda nawaf]

so , what I have to do?

thanks

[Fangjun Jiang]

use cell array

%%

x={1 2 3 1};

for i=1:4

if x{i}==1

x{i}='a';

end

end