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[IDV #LLH-849248]: error to load and represent the data



Ashwinee,

We spent quite a bit more time looking at this file and there are many problems.

0/ The data file says that it is "CF-1.4", but it is not.

1/ The attributes for the Mercator projection are defined are defined globally,
but they should be defined with the rcm_map variable which defines the grid
mapping. The attached ncml file fixes, at least, the projection problems.

2/ There are no data relating to the variables (e.g., "maximum surface
temperature"). In particular the time dimension for the variables are zero.

I am able to open the file by pointing to the attached ncml file in the IDV, but
I cannot display much on account of problem 2/. But I can render or visualize
the some of the 2D fields (e.g., "Domain land/ocean mask").

In summary, the file is not CF compliant even though it claims to, the
projection is not defined correctly, and there are no data in the data 
variables.

Best,

Unidata IDV Support


> Hello,
> Yes, I have already informed them and they will do the necessary. Thank you
> very much.
> Have a nice day.
> Regards
> 
> address@hidden> wrote:
> 
> > Ashwinee,
> >
> > The problem, from what I can tell, is the output data from this model are
> > not CF
> > compliant.
> >
> > Can you work with the authors of RegCM to ensure the data are CF
> > compliant? Otherwise, the IDV will not be able to display these data.
> >
> > Best,
> >
> > Unidata IDV Support
> >
> >
> > > Hello Sir/Madam,
> > > These files are generated from the regcm 4.3 model. we have even
> > converted
> > > the file from .nc to .cdl, and we still face the same problem, that is
> > > error to load the data.
> > >
> > > address@hidden> wrote:
> > >
> > > > Ashwinee & Stephie,
> > > >
> > > > I took a look at the file mauritius_STS.1990060100.nc
> > > >
> > > > It appears the mercator projection is not completely defined.
> > > >
> > > > In particular, the Mercator projection must have the netCDF attribute
> > > > "standard_parallel" or "scale_factor_at_projection_origin".
> > > >
> > > > Where are these data coming from? What model?
> > > >
> > > > Best Wishes,
> > > >
> > > > Unidata IDV Support
> > > >
> > > > > Bonjour Ashwinee,
> > > > >
> > > > > Please upload your data to
> > > > http://motherlode.ucar.edu/repository/alias/idvupload
> > > > > and let us know when it is there.
> > > > >
> > > > > Cordialement,
> > > > >
> > > > > Unidata IDV Support
> > > > >
> > > > > PS When I was a kid I vacationed in nearby Ãle de la RÃunion. It is 
> > > > > a
> > > > beautiful
> > > > > part of the world. I hope to visit L'ile Maurice one day.
> > > > >
> > > > >
> > > > > > Full Name: Ashwinee Dheerees
> > > > > > Email Address: address@hidden
> > > > > > Organization: university of mauritius
> > > > > > Package Version: 5.0u1 build date:2014-08-08 16:54 UTC
> > > > > > Operating System: Windows 7
> > > > > > Hardware: Java: home: C:\Users\labuser\Desktop\IDV_5.0u1\jre
> > version:
> > > > 1.7.0_51 j3d:1.6.0-pre9-daily-experimental daily
> > > > > > Description of problem: There was an error loading the data:
> > > > > > Error creating data source:file.grid with:
> > > > C:\Users\labuser\Desktop\regcmdata\output\mauritius_SRF.1990060100.nc
> > > > > > Grid data source failed making data set:
> > > > C:\Users\labuser\Desktop\regcmdata\output\mauritius_SRF.1990060100.nc
> > > > > > Mercator projection must have attribute standard_parallel or
> > > > scale_factor_at_projection_origin
> > > > > >
> > > > > > ******************
> > > > > > Stack trace:
> > > > > > java.lang.IllegalArgumentException: Mercator projection must have
> > > > attribute standard_parallel or scale_factor_at_projection_origin
> > > > > > at
> > > >
> > ucar.nc2.dataset.transform.Mercator.makeCoordinateTransform(Mercator.java:63)
> > > > > > at
> > > >
> > ucar.nc2.dataset.CoordTransBuilder.makeCoordinateTransform(CoordTransBuilder.java:217)
> > > > > > at
> > > >
> > ucar.nc2.dataset.CoordSysBuilder.makeCoordinateTransforms(CoordSysBuilder.java:930)
> > > > > > at
> > > >
> > ucar.nc2.dataset.CoordSysBuilder.buildCoordinateSystems(CoordSysBuilder.java:516)
> > > > > > at ucar.nc2.dataset.NetcdfDataset.enhance(NetcdfDataset.java:469)
> > > > > > at ucar.nc2.dataset.NetcdfDataset.<init>(NetcdfDataset.java:1446)
> > > > > > at
> > ucar.nc2.dataset.NetcdfDataset.openDataset(NetcdfDataset.java:427)
> > > > > > at
> > > > ucar.nc2.dataset.NetcdfDataset.acquireDataset(NetcdfDataset.java:516)
> > > > > > at ucar.nc2.dt.grid.GridDataset.open(GridDataset.java:117)
> > > > > > at ucar.nc2.dt.grid.GridDataset.open(GridDataset.java:103)
> > > > > > at
> > > >
> > ucar.unidata.data.grid.GeoGridDataSource.doMakeDataSet(GeoGridDataSource.java:1156)
> > > > > > at
> > > >
> > ucar.unidata.data.grid.GeoGridDataSource.getDataset(GeoGridDataSource.java:1178)
> > > > > > at
> > > >
> > ucar.unidata.data.grid.GeoGridDataSource.initAfterCreation(GeoGridDataSource.java:502)
> > > > > > at
> > > > ucar.unidata.data.DataManager.createDataSource(DataManager.java:1602)
> > > > > > at
> > > >
> > ucar.unidata.idv.IntegratedDataViewer.createDataSource(IntegratedDataViewer.java:1980)
> > > > > > at
> > > >
> > ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1897)
> > > > > > at
> > > >
> > ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1831)
> > > > > > at
> > > >
> > ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1804)
> > > > > > at
> > > > ucar.unidata.idv.chooser.IdvChooser.makeDataSource(IdvChooser.java:943)
> > > > > > at
> > > >
> > ucar.unidata.idv.chooser.FileChooser.selectFilesInner(FileChooser.java:656)
> > > > > > at
> > > > ucar.unidata.idv.chooser.FileChooser.selectFiles(FileChooser.java:525)
> > > > > > at
> > > >
> > ucar.unidata.idv.chooser.FileChooser.doLoadInThread(FileChooser.java:547)
> > > > > > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> > > > > > at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
> > > > > > at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> > > > > > at java.lang.reflect.Method.invoke(Unknown Source)
> > > > > > at ucar.unidata.util.Misc$2.run(Misc.java:1215)
> > > > > > at ucar.unidata.util.Misc$3.run(Misc.java:1243)
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > >
> > > >
> > > > Ticket Details
> > > > ===================
> > > > Ticket ID: LLH-849248
> > > > Department: Support IDV
> > > > Priority: Normal
> > > > Status: Closed
> > > >
> > > >
> > >
> > >
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: LLH-849248
> > Department: Support IDV
> > Priority: Emergency
> > Status: Closed
> >
> >
> 
> 


Ticket Details
===================
Ticket ID: LLH-849248
Department: Support IDV
Priority: Emergency
Status: Closed

Attachment: mauritius_ATM.1990060100.ncml
Description: Binary data


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