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Reading-eScience-Centre / edal-java

Environmental Data Abstraction Layer libraries
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Support for raw NCML FMRC #93

Closed acrosby closed 7 years ago

acrosby commented 7 years ago

Does edal support raw ncml fmrcs or is it expected that people will be using TDS to do this? I have an fmrc aggregation that seems to be valid in Tools-ui, and ncwms2 reads the ncml with no errors, but the dataset appears to be time-disabled. I am only interested in the "best" series.

guygriffiths commented 7 years ago

No, currently there's no support for NcML FMRCs. I looked into it a long time ago, so the details are hazy, but I seem to recall that I was trying to use an NcML representation of an FMRC to perform automatic timeseries aggregation on files with overlapping time axes (again, only looking for the "best" time series). I remember that it didn't work, but I don't remember why not. Although by no means the most likely option, it's possible that the issue was with the NetCDF-Java libraries and we've updated to a 5.x release of those recently, so things may have changed. If you can attach the NcML, I'll take a look and see if it can be made to work.

acrosby commented 7 years ago

Hi @guygriffiths, here is the NCML that I am using. The data is proprietary, do you mind if i send some files to you separately? 

<?xml version="1.0" encoding="UTF-8"?>                                     
<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2" enhance="true" >
     <aggregation dimName="run" type="forecastModelRunCollection" >          
       <scan location="/media/GLB15MIN/" suffix=".nc" enhance="true" />       
    </aggregation>                                                         
</netcdf>
guygriffiths commented 7 years ago

@acrosby - Thanks for that. I'm happy for you to send me some files separately. If they're small enough to email (bearing in mind that just 2 or 3 files would be sufficient), I'm on guy.griffiths@the-iea.org, otherwise let me know how you want to go about it.

acrosby commented 7 years ago

@guygriffiths is this now taken care of in the releases of edal and ncwms?

Thanks, Alex

guygriffiths commented 7 years ago

@acrosby - Yes, it should be. I'll close the issue, but feel free to reopen it if it doesn't work for you (if you can? If not, just ping me an email)