How do you replace the entry of a matrix with a string?

I'm a little stuck

[Azzi Abdelmalek]

What is the entry of a matrix?

[Ahmed]

It is a number, 0, and I want to change it to a string 'monday' I'm making a calendar

Answer 1

[Wayne King]

You can't technically replace an entry of a matrix with an entire string. You would require a cell array for that. You can convert a matrix into numbers and replace single elements with single characters.

For example:

X = randi([0 6],20,20);
X = num2str(X);
X(X=='0') = 'M';

If you tried to replace with 'Monday', you'd get an assignment mismatch problem because you can't put 6 characters in a placeholder for one character.

You would have to use cell arrays for something like that.

Answer 2

[Jos (10584)]

I suggest to use a cell array and keep the original numerical matrix for finding the elements that have to change:

X1 = randi([0 6],10,10)
X2 = num2cell(X1)
X2(X1 == 1) = {'Tuesday'}

[oshawcole]

can you write this code in one line?

Answer 3

[Azzi Abdelmalek]

a=[0;1;2;3]
b=num2cell(a)
b{1}='Monday'