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[IDV #WCL-477622]: IDV - on data formats

Hello HansPeter-

> Institution: EUMETSAT
> Package Version: 2.0
> Operating System: os.name:Windows XP; os.arch:x86; os.version:5.1;
> Hardware Information: java.vendor:Sun Microsystems Inc.; 
> java.version:1.5.0_06; java.home:C:\\Program Files\\Java\\jre1.5.0_06; 
> j3d.version:1.3.2 fcs (build12); j3d.vendor:Sun Microsystems, Inc.; 
> j3d.renderer:OpenGL;
> Inquiry: Hi
> 
> I am running successfully the nightly build of 2006-08-0 that happens to be 
> the Swiss National Day.

A day for celebration!

> Unconnected to the IDV version and festivities I have a couple of questions 
> about data formats.
> 
> 1. I can read McIDAS AREA files from EUMETSAT's archive U-MARF..
> Why does IDV not recognise the format, i.e. it has to be selected from a list 
> of formats?

The format guessing is based on the filename.  If your files are named AREA*
or end in .area, it will automatically select the McIDAS AREA data source type.
Otherwise, you need to set it manually.  If you have a specific file naming
convention for these files that doesn't conflict with any others, let me 
know and I could add it to the file pattern.

> What are default units (RAW?) read in?

The raw values are normally just the values sent from the satellite.  In the
case of GOES, however, they are what is relayed after pre-processing by
ground station.  For MSG, they are whatever Eumetsat sends.

In either case, these are the values used to compute the radiances --
usually just a linear function.

> How can I change to BRIT/RAD and/or TEMP?

The easiest thing would be to put them on an ADDE server and read
them that way since the server will have all the calibrations.  
Otherwise, you'd have to implement the McIDAS calibration
modules either in Java or Jython.  Since the calibration varies from
satellite to satellite, it would be a bit of work to handle all cases.
 
> 2. Are there any plans to offer HDF inoput (e.g. to read MODIS and future 
> U-MARF data) from MSG and Metop?

I think there is a McIDAS ADDE HDF server.  There is a plan to read HDF-5
directly through the netCDF Java library, but that's a ways off.

> 3. What about the BUFR world?

Someone here is working on a Java BUFR decoder which is under review. Are 
there particular datasets that you would want to access?

> Evviva la Svizzera, HP

Someday, with any luck, I'll get to visit Switzerland.  It's high on 
my list.

Don

Ticket Details
===================
Ticket ID: WCL-477622
Department: Support IDV
Priority: Normal
Status: Open