Re: [visad] help

• To: Tom Whittaker <whittaker@xxxxxxxx>
• Subject: Re: [visad] help
• From: Curtis Rueden <ctrueden@xxxxxxxx>
• Date: Tue, 25 Mar 2014 09:28:03 -0500

Hi Tom,

> Unfortunately, this means that for files that use newer features in
> these formats, the code no longer works.

Out of curiosity: how do IDV and McIDAS V open NetCDF and HDF5 files? Would
that code be illustrative and/or helpful for other devs in the community?

Regards,
Curtis


On Tue, Mar 25, 2014 at 9:12 AM, Tom Whittaker <whittaker@xxxxxxxx> wrote:

> I believe the main issue here is that the code in the VisAD library
> for HDF files has not been maintained by the original authors.  This
> also is true of the netCDF adapter ("Plain").  Unfortunately, this
> means that for files that use newer features in these formats, the
> code no longer works.
>
> I do not have any solutions, other than as Ghansham suggests, using
> the "official" releases of the respective libraries and then building
> your own VisAD Data objects...
>
> tom
>
> On Fri, Mar 21, 2014 at 3:14 AM, Devanshi Prajapati
> <prajapati.devanshi@xxxxxxxxx> wrote:
> > Hi.......This is my program,
> >
> > package myapp;
> >
> > import java.rmi.RemoteException;
> > import visad.DataImpl;
> > import visad.VisADException;
> > import visad.data.hdf5.HDF5Form;
> > import ncsa.hdf.hdf5lib.*;
> >
> > public final class hfAdapter2
> > {  String filePath;
> >     public hfAdapter2() throws VisADException, RemoteException
> >     {
> >         filePath="F:\\Devanshi\\Input\\xyz.h5";
> >         System.load("F:\\Devanshi\\Projects\\MyApp\\Lib\\jhdf.dll");
> >         System.load("F:\\Devanshi\\Projects\\MyApp\\Lib\\jhdf5.dll");
> >         HDF5Form h=new HDF5Form();
> >         DataImpl ncData=h.open(filePath);
> >     }
> >     public static void main(String[] args)
> >     throws RemoteException, VisADException, IOException
> >     {      new hfAdapter2();
> >     }
> > }
> > And the Error I got is,
> >
> > run:
> > Exception in thread "main" java.lang.UnsatisfiedLinkError:
> > ncsa.hdf.hdf5lib.H5.H5Fopen(Ljava/lang/String;II)I
> > at ncsa.hdf.hdf5lib.H5.H5Fopen(Native Method)
> > at visad.data.hdf5.hdf5objects.HDF5File.<init>(HDF5File.java:85)
> > at visad.data.hdf5.HDF5FileAdapted.<init>(HDF5FileAdapted.java:70)
> > at visad.data.hdf5.HDF5Form.open(HDF5Form.java:102)
> > at myapp.hfAdapter2.<init>(hfAdapter2.java:46)
> > at myapp.hfAdapter2.main(hfAdapter2.java:96)
> > Java Result: 1
> > BUILD SUCCESSFUL (total time: 0 seconds)
> >
> > --
> > Devanshi U. Prajapati
> >
> >
> > _______________________________________________
> > visad mailing list
> > visad@xxxxxxxxxxxxxxxx
> > For list information, to unsubscribe, visit:
> > http://www.unidata.ucar.edu/mailing_lists/
>
>
>
> --
> Tom Whittaker
> Researcher-Emeritus
> University of Wisconsin-Madison
> Madison, WI USA
>
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> visad mailing list
> visad@xxxxxxxxxxxxxxxx
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>

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    • From: Devanshi Prajapati
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    • From: Tom Whittaker