Re: NcML aggregation question

On 6/15/2010 1:33 PM, Tommy Jasmin wrote:
> John Caron wrote:
> > On 6/15/2010 1:02 PM, Tommy Jasmin wrote:
> > > Hey John - would you mind looking at a simple joinNew aggregation 
> > > and see if you
> > > can tell why it's not working, if I send you the files?
> > yes, thats fine.
> >
> > you should send stuff to address@hidden so 
> > someone else can answer (maybe) if im on vacation, as i will be after 
> > weds.
> Thanks John, I will do that from now on.  Since I already have your 
> attention I'll
> just send this one to you.
> Files are attached - just trying to do a simple joinNew on two NPP 
> files.  I suspect
> there is some problem I am not seeing when the variableAgg variable is 
> buried
> down in a group.
>
> The example files from the NcML aggregation web page work fine.

<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2";>
<aggregation dimName="time" type="joinNew">
<variableAgg name="CloudBaseHeightTotal" />
<netcdf 
location="VCBHO_npp_d20030125_t084830_e084955_b00015_c20071213022754_den_OPS_SEG.h5" 
coordValue="0" />
<netcdf 
location="VCBHO_npp_d20030125_t084955_e085121_b00015_c20071213022754_den_OPS_SEG.h5" 
coordValue="10" />
</aggregation>
</netcdf>

1. theres no variable "CloudBaseHeightTotal" in those files

2. NPP doesnt put shared dimensions into its files (!). we fix this in

   ucar.nc2.dataset.conv.NppConvention

however, we are currently only guessing at what needs to be done. I 
started to fix it, when i saw the above. I will check in my fixes 
tommorrow, and you will have to continue to change that class as needed.

you can also look at

http://www.unidata.ucar.edu/software/netcdf-java/tutorial/CoordSysBuilder.html