How to retrieve files from ftp website

Hi, I need to retreive .nc files in a loop from a web address that starts with ftp://

I tried mget, urlread, and webread and none seemed to work for me

Any assistance would be appreciated!

Answer 1

[Walter Roberson]

https://www.mathworks.com/help/matlab/ref/ftp.html

You create a connection, and then you use cd() and mget() and so on on the object.

[Tiger]

just

mget(ftp('ftp://usgodae.org/pub/outgoing/argo/dac/aoml/13857/'), '13857_tech.nc')

which gives me:

Error using connect (line 22)

Could not open a connection to "ftp", port "NaN".

Error in ftp (line 75)

connect(h)

sorry if its a simple question, new to this sort of stuff

basically ftp://usgodae.org/pub/outgoing/argo/dac/aoml/ has folders with files I want

thanks!

[Image Analyst]

Do you need a password to login to the site? If you do it via your web browser does it work?

[Tiger]

Yup works in web browser, no password

[Walter Roberson]

obj = ftp('usgodae.org');
cd(obj, '/pub/outgoing/argo/dac/aoml/13857/');
mget(obj, '13857_tech.nc')
close(obj)

Answer 2

[Ameer Hamza]

See websave(): https://www.mathworks.com/help/releases/R2020a/matlab/ref/websave.html

[Tiger]

Thanks for the response. All these functions (including websave) say that any url that isn't http:// isn't supported, and the url I want starts with ftp:// so kinda in a rut :(

[Ameer Hamza]

Can you show your code with mget().

[Image Analyst]

outfilename = websave('13857_tech.nc', 'https://usgodae.org/pub/outgoing/argo/dac/aoml/13857/')

only brings down the HTML document, not the actual file.