Help with error in Matlab

I have a cell named "r2" which has 2 rows and 1 column:

r2 {1,1} = 1046 x 1

r2 {2,1} = 1045 x 1

When analyzing the number of repetitions in a cell how in the following example:

r2 = {[1, 4, 3, 1], [2, 2, 3]};

I should have results:

r3 = {[1 2, 2 0, 3; 1 4 1], [1 0, 2; 2 3 1]};

In applying the code:

if true

    % code

r2 = {[1, 4, 3, 1]; [2, 2, 3]};

r3 = cellfun (@ (x) [(1: máx (x)) ', accumArray (x (:), 1) ], r2, 'un', 0);

end

Matlab gives me the error:

*"Error using accumarray

First input SUBS must contain positive integer subscripts.

Error in @(x)[(1:max(x))',accumarray(x(:),1)]"*

How I can fix it?

Many thanks

Answer 1

[Walter Roberson]

invalid_entries = cellfun( @(x) x(x <= 0 | mod(x,1) ~= 0), r2, 'Uniform', 0);

Use that to find out which values are not positive integers.

[FRANCISCO]

The value that is not positive is "0". How I can solve?. I've thought about replacing the "0" with "100" that I can solve

[Walter Roberson]

What behavior would you like to see for the 0? Would you like the 0 to be counted or omitted ?

[FRANCISCO]

I consider the "0", then replaced it with "100" and then I had it in mind to place it in the cell, returning to change the "100" to "0". Many thanks

[Walter Roberson]

r3 = cellfun (@ (x) [(0: máx (x)) ', accumArray (x (:) + 1, 1) ], r2, 'un', 0);

Notice the +1 added to the x(:) so that 0 becomes index 1, 1 becomes index 2, and so on.