NCREAD reading GRIB2 files?

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Ryan
Ryan 2015-1-14
回答： Jacob Halbrooks 2024-9-25
For my understanding these are GRIB2 files... any potential reasons they're not working? Maybe I misunderstand that NCREAD cannot read this format? Any help would be appreciated
url = 'ftp://ftp.ncep.noaa.gov/pub/data/nccf/com/gfs/prod/gfs.2015011412/gfs.t12z.pgrb2.0p25.f120'
data = ncread(url,'APCP');

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回答（2 个）

Jacob Halbrooks
Jacob Halbrooks 2024-9-25
As of R2023b, you can read data from a GRIB file (.grb, .grib, .grib2) using the Mapping Toolbox readgeoraster function. You can also get information about a GRIB file by using the georasterinfo function. These functions were enhanced in R2024b to support GRIB files that use CCSDS compression.
Kelly Kearney
Kelly Kearney 2015-1-14
I don't believe ncread can read files via FTP, only OPeNDAP. You'll have to save the file locally before you can read it.
  2 个评论
Ryan
Ryan 2015-1-14
Hmmmm still trouble loading it even when I download to a local drive..
Kelly Kearney
Kelly Kearney 2015-1-14
Also, you'll need to convert the file to netcdf... unlike NCL, Matlab doesn't read in GRIB files natively.

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