Hello Shayma,
You could urlwrite function to download the files from an online database. The following steps can be followed to download the files:
1) Save of the URL of the file to be downloaded into a variable called 'url':
% NOTE: This URL has just been taken as an example to illustrate the
% process.
url = 'http://blizzard.mtukrc.org/~weather/KRCwthr050916.csv';
2) Use urlwrite to download the required file as follows:
urlwrite (url, 'KRCwthr050916.csv'); % 'KRCwthr050916.csv' is the output file name
Hope this helps!
