Create empty dataset and populate it row by row

Hi,

I'm trying to create an object of the class dataset (Stats toolbox) with a few named "columns". I want such object to initially have no rows. Then, I would like to add new rows one by one. I've tried the code below to create the dataset but I get an error. Can anyone help me with this?

Thanks in advance

P.S. I could not submit this question to the "answers" section of the Mathworks website

% Column names are 'F1' and 'F2'
myDS = dataset([],'VarNames',{'F1','F2'})

??? Error using ==> setvarnames at 23
NEWNAMES must have one name for each variable in A.

Error in ==> dataset.dataset>dataset.dataset at 383
            a = setvarnames(a,varnames); % names will be modified to make them valid

Answer 1

[Mark]

Fangjun Jiang 23 minutes ago

VarNames={'F1','F2'}; myDS=dataset([],[],'VarNames',VarNames)

Answer 2

[Fangjun Jiang]

myDS =dataset({[],'F1'},{[],'F2'});

Or to see it, myDS =dataset({1,'F1'},{2,'F2'})

[Mark]

Thank you, but I want to avoid putting each variable name individually. I thought that the 'VarNames' was supposed to do that. I want a dataset with two columns, one is numeric and the other contains strings. How do I do that with the 'VarNames' option?

[Fangjun Jiang]

VarNames={'F1','F2'};

myDS=dataset([],[],'VarNames',VarNames)

[Mark]

That worked, thanks