working with mwArray in C++: How to extend it...

I am working with mwArray's in C++. I have created an empty cellarray as follows:

mwArray r(mxCELL_CLASS);

Now I would like to add a row to this. The Matlab code would be as follows:

>> r = {};
>> r = [ r; { 'asdf', 'fdsa', 1.0, 'foobar' } ]

And I can repeat it to add more rows (ignore performance issues due to not pre-allocating - not material here for what I am doing).

How do I do the above in C++? I tried:

r.Get(1,1).Set( mwArray( "asdf") )

or, equivalently (from what I understand so far):

r(1) = "asdf"

Both produce an error "Attempt to access element at index 1 in array of size 0".

Of course I can pre-allocate - but various google searches suggest that I shouldn't need to in this case, i.e. the mwArray should just grow as needed.

Thanks in advance,

[matal]

FYI - I am using R2009a.

Answer 1

[Kaustubha Govind]

I'm not sure, but it doesn't seem like mwArray's of double-matrix types can grow dynamically. From the documentation:

Restrictions on Using C++ SETDATA to Dynamically Resize an MWArray

You cannot use the C++ SETDATA function to dynamically resize MWArrays.

For instance, if you are working with the following array:

[1 2 3 4]

you cannot use SETDATA to increase the size of the array to a length of five elements.

I'm assuming this limitation applies to the SET function as well, but you may want to confirm with MathWorks Support.

[matal]

Thank you - I didn't see that part of the documentation. It answers the question directly.