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    %% Write and Append Data to File  

%% 
% Create two arrays of sample numeric data. 
M = magic(5);
N = magic(3);  

%% 
% Export matrix |M| to a file and use whitespace as the delimiter. 
dlmwrite('myFile.txt',M,'delimiter',' ');  

%% 
% Append matrix |N| to the file, offset from the existing data by one row.
% Then, view the file. 
dlmwrite('myFile.txt',N,'-append',...
'delimiter',' ','roffset',1)
type('myFile.txt')  

%% 
% Read the data in |'myFile.txt'| using |dlmread|. 
dlmread('myFile.txt') 

%%
% When |dlmread| reads the two matrices from the file, it pads the smaller
% matrix with zeros.