Re: Bug in NetCDF's MAMath.java?

Eric Russell wrote:

> At 2:41 PM -0700 3/7/05, John Caron wrote:
>  
>
> > Eric Russell wrote:
> >
> >    
> >
> > > At 8:16 PM -0700 3/4/05, John Caron wrote:
> > >
> > >
> > >      
> > >
> > > > thanks Eric, you are of course right,  i dont know why i didnt find this 
> > > > before !
> > > >
> > > > are you are using 2.2? if so, i just released a new version with the fix 
> > > > in it.
> > > >
> > > > thanks very much,
> > > >
> > > > John
> > > >   
> > > >
> > > >        
> > > Thanks for the quick response! I downloaded the netcdfAll-2.2.07.zip, 
> > > but now I'm getting a NoClassDefFoundError: ucar/nc2/dataset/conv/Convention
> > > when I call thredds.datamodel.Dataset.getGridDataset (line 135 of 
> > > Dataset.java). I think one of the jars must be out of sync with the 
> > > others, but I can't figure out which. Any ideas? Thanks again,
> > >
> > > Eric
> > >
> > >
> > >
> > >      
> > hmmm, thats an old package we arent using anymore. Did that come out of 
> > thredds.jar? Are you using it, or just trying to do a source compile?
> >    
>
> Aha! It's from catalogUI.jar, which wasn't in the netcdfAll jar. I don't
> know how it snuck in there. I'm updating the Thredds support I added to
> My World a while back, and it appears from looking at the current 
> Thredds source code that using Dataset is no longer the way to get a 
> GridDataset from an InvDataset. It looks like the way to do it now is 
> to use the ucar.nc2.thredds.ThreddsDataFactory. Is that correct? Is 
> there a document somewhere I should be reading that describes this 
> change and similar changes from Thredds 1.3 to 2.0? Thanks,
>
> Eric
>
>  
Hi Eric, I didnt realize who you were at first. Yes, Ive been 
refactoring the whole thredds/netcdf-java stuff. Ive been planning on 
putting together a new release suitable for anyone using the UI classes 
before anyone noticed, but you've beat me to it!  Generally, client side 
stuff is moving to ucar.nc2, and server stuff will be done in the 
thredds packages.

As I recall, you are getting GeoGrid objects and working with them? We 
are adding new data types (eg radar, buoy data, etc) some of which you 
may be interested in. We are redoing these "scientific data types" as 
interfaces, under the ucar.nc2.dt package. GeoGrid will  eventually  
implement  a  GridDatatype interface (or somehing).

Anyway, its not quite done yet, there are some loose ends, but now would 
be a good time to figure out what you need and when you need it.  Why 
dont you download the ToolsUI (used to be the thredds data viewer) and 
look around at it:

  
http://my.unidata.ucar.edu/content/software/netcdf-java/v2.2/webstart/index.html

And look at ucar.nc2.ui.ToolsUI to see how things work in there. The 
ToolsUI handles both local files and files accessible through THREDDS 
catalogs. Are you interested in local file access? The nj22 package is 
starting to be able to other file formats besides netcdf, including 
grib, radar, etc.