How can I get MATLAB to log in to a website and then grab data?

If my code looks like this:

url = 'example url'; 
options = weboptions('Timeout',360); %6 min timeout
outfilepath = websave('Export 1.csv',Turl,options); 
filename = 'Export 1.csv';

I can get data to a spreadsheet. But the url I'm working with links to a password protected data set, so I tried to write it like this:

 main_url = 'example main url'; 
 login_url = 'url to screen with login prompt';
 webwrite(login_url,'userid','example username','password','example password');
 options = weboptions('Timeout',360); %6 min timeout
 outfilepath = websave('Export 2.csv',TGIN_url,options); 
 filename = 'Export 2.csv';

But I still get the same export that does not contain the data I want. Is there any way to get MATLAB to login to the website and then grab the data?

Thanks!

[Philip Hoddinott]

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