[netcdf-java] Getting forecast times from grib file

• To: netcdf-java@xxxxxxxxxxxxxxxx
• Subject: [netcdf-java] Getting forecast times from grib file
• From: Alexander Berkes <n3bul4@xxxxxx>
• Date: Mon, 17 Jan 2011 16:16:30 +0100

Hello,

I am really new to the netcdf-java library.

I am really stuck on getting the forecast times from a grib file.
Anything else works great (getting the lat/lon coordinate points,
getting the values or subsetting the grid...).

I tried the following:

------------------
String filename = "current.grb";

FmrcImpl forecasts = new FmrcImpl(filename);
List<Date> forecastDates = forecasts.getForecastDates();
           
for(Date d : forecastDates){
    System.out.println(fd);
}
-----------------

But the above fails with a nullpointer exception on Object creation
(FmrcImpl forecasts = new FmrcImpl(filename);):
---------------------
Exception in thread "main" java.lang.NullPointerException
    at ucar.nc2.dt.fmrc.FmrcImpl$Gridset.<init>(FmrcImpl.java:264)
    at ucar.nc2.dt.fmrc.FmrcImpl.init(FmrcImpl.java:133)
    at ucar.nc2.dt.fmrc.FmrcImpl.<init>(FmrcImpl.java:85)
    at ucar.nc2.dt.fmrc.FmrcImpl.<init>(FmrcImpl.java:81)
    at Test.main(Test.java:62)
---------------------

Please can anybody help me on this?


Best regards,

Alex

• Follow-Ups:
  • Re: [netcdf-java] Getting forecast times from grib file
    • From: John Caron