Re: [netcdf-java] Cant read ...: not a valid CDM file.

  • To: Christian Ward-Garrison <cwardgar@xxxxxxxx>
  • Subject: Re: [netcdf-java] Cant read ...: not a valid CDM file.
  • From: David Rush <david.rush@xxxxxxx>
  • Date: Tue, 25 Jul 2017 13:07:49 -0600
Never mind.  Just discovered that "example_nc" is a tar file (a small
detail that could have been made clearer to me).  Once I untarred that I
can open the files inside.

So, I was never here, and this never happened..... ;^)

David

On Tue, Jul 25, 2017 at 1:01 PM, David Rush <david.rush@xxxxxxx> wrote:

> Can someone send me a small, simple file that I should be able to read
> with this program?
>
> David
>
> On Tue, Jul 25, 2017 at 1:01 PM, David Rush <david.rush@xxxxxxx> wrote:
>
>> Christian:
>>
>> That's a good question.  I'm not able to see what's in it, so can't say
>> if the "higher ups" would approve dissemination, but I will investigate.
>>
>> Logistically it might be tricky simply because it's a large (16 MB) file.
>>
>> David
>>
>> On Tue, Jul 25, 2017 at 12:57 PM, Christian Ward-Garrison <
>> cwardgar@xxxxxxxx> wrote:
>>
>>> Hi David,
>>>
>>> It's hard to say. Can you provide us the file?
>>>
>>> Cheers,
>>> Christian
>>>
>>> On Tue, Jul 25, 2017 at 12:50 PM, David Rush <david.rush@xxxxxxx> wrote:
>>>
>>>> Hi.  I'm completely new to netcdf and have been given some netcdf data
>>>> to read.
>>>>
>>>> I'm using netcdfAll-4.6.10.jar
>>>>
>>>> I found the example program in the tutorial and have implemented
>>>> something very similar:
>>>>
>>>> import ucar.nc2.NetcdfFile;
>>>>
>>>> public class ReadNetCDF {
>>>>
>>>>   public static void main(String[] args) throws Exception {
>>>>     ReadNetCDF x = new ReadNetCDF();
>>>>     x.read("netCDF/example_nc");
>>>>   }
>>>>
>>>>   public void read(String fileName) throws Exception {
>>>>     NetcdfFile ncFile = null;
>>>>     try {
>>>>       ncFile = NetcdfFile.open(fileName);
>>>>       System.out.println("ncFile = " + ncFile);
>>>>       this.read(ncFile);
>>>>     } finally {
>>>>       if (ncFile != null) {
>>>>         ncFile.close();
>>>>       }
>>>>     }
>>>>   }
>>>>
>>>>   private void read(NetcdfFile nf) throws Exception {
>>>>     System.out.println("nf = " + nf);
>>>>   }
>>>>
>>>> }
>>>>
>>>> When I run that I get:
>>>>
>>>> Exception in thread "main" java.io.IOException: java.io.IOException:
>>>> Cant read netCDF/example_nc: not a valid CDM file.
>>>>
>>>> at ucar.nc2.NetcdfFile.open(NetcdfFile.java:427)
>>>>
>>>> Suggestions?  Is the example_nc file I was given likely corrupt?
>>>>
>>>> David
>>>>
>>>>
>>>> E-Mail to and from me, in connection with the transaction
>>>> of public business, is subject to the Wyoming Public Records
>>>> Act and may be disclosed to third parties.
>>>>
>>>> _______________________________________________
>>>> NOTE: All exchanges posted to Unidata maintained email lists are
>>>> recorded in the Unidata inquiry tracking system and made publicly
>>>> available through the web.  Users who post to any of the lists we
>>>> maintain are reminded to remove any personal information that they
>>>> do not want to be made public.
>>>>
>>>>
>>>> netcdf-java mailing list
>>>> netcdf-java@xxxxxxxxxxxxxxxx
>>>> For list information or to unsubscribe, visit:
>>>> http://www.unidata.ucar.edu/mailing_lists/
>>>>
>>>
>>>
>>
>

-- 

E-Mail to and from me, in connection with the transaction 
of public business, is subject to the Wyoming Public Records 
Act and may be disclosed to third parties.
  • 2017 messages navigation, sorted by:
    1. Thread
    2. Subject
    3. Author
    4. Date
    5. ↑ Table Of Contents
  • Search the netcdf-java archives: