MATLAB - Read GRIB Data

Background:

I want to import meteorological data (wind speed, temperature as a function of position and altitude) in the GRIB-format into Matlab.

Status:

While googling I found this Matlab-Grib-Reader: http://www.mathworks.com/matlabcentr...exchange/21579

The Matlab Grib-Reader requires CDI libraries from here: https://code.zmaw.de/projects/cdi/files

The libraries must be compiled with the own machine, i used this terminal commands:

./configure CFLAGS=-fPIC CPPFLAGS=-fPIC --enable-shared 
make

I copied the resulting libcdi.a library into the lib64 folder, and executed compile.m which gave me the following:

COMPILING cdi_varlist... 
cdi_mx.c: In function 'getLevel': 
cdi_mx.c:431: warning: incompatible implicit declaration of built-in function 'modf' 
Undefined symbols for architecture x86_64: 
"_Warning", referenced from: 
_getLevel in cdi_mx.o 
(maybe you meant: _Warning_) 
ld: symbol(s) not found for architecture x86_64 
collect2: ld returned 1 exit status 

mex: link of ' "cdi_varlist.mexmaci64"' failed. 

Error using mex (line 206) 
Unable to complete successfully. 

Error in compile (line 15) 
mex cdi_varlist.c cdi_mx.c -Iinclude -Llib64 -lcdi -lnetcdf

Who can help?

PS: Matlab 2012a, Mac OS X 10.8.2, Xcode 4.6

Answer 1

[Jacob Halbrooks]

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.