How can I get data from nasa via ftp?

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jiang wenjie
jiang wenjie 2016-6-7
评论： Yogita Karale 2017-10-13
Hello everyone
I want use matlab get modis data from <ftp://ladsweb.nascom.nasa.gov/allData/6/MYD021KM/>. But when I use
f = ftp('ftp://ladsweb.nascom.nasa.gov/allData/6/MYD021KM/')
Matlab has error. such as
Error using connect (line 18)
Could not open a connection to "ftp", port "NaN".
Error in ftp (line 75)
connect(h)
thank you
Jiang
  2 个评论
Muhammad Usman Saleem
Muhammad Usman Saleem 2016-6-7
编辑：Muhammad Usman Saleem 2016-6-7
use .cdf format in which NASA offer its product. this format is easily readable to matlab

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回答（2 个）

Muhammad Usman Saleem
编辑：Muhammad Usman Saleem 2016-6-11
http://www.mathworks.com/matlabcentral/answers/273383-how-to-convert-netcdf-reterive-from-ncep-ncar-to-ascii-files-of-each-month
https://www.myroms.org/wiki/NetCDF_Data_Processing_Scripts
search more on google and researchgate about how to proccess .nc files in matlab
m.
m. 2016-8-3
I got the same problem. I bet it has something to do with the ':' in the url, since after the ':' usually should come the portnumber. How to solve this is still unclear to me.
  2 个评论
m.
m. 2016-8-3
Got it! Start with this: f = ftp('ladsweb.nascom.nasa.gov') and then use mget in order to download the data
Yogita Karale
Yogita Karale 2017-10-13
but then how do you go to specific folder and download a particular file from that folder

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