Re: IDV and netCDF FillValue

• To: Brian Blanton <brian_blanton@xxxxxxx>
• Subject: Re: IDV and netCDF FillValue
• From: Don Murray <dmurray@xxxxxxxxxxxxxxxx>
• Date: Thu, 04 Aug 2005 10:41:21 -0600

Hi Brian-

Sorry for the delay in responding.  I was on vacation and your
message got lost in my mailbox.

Brian Blanton wrote:

Hi.  I'm new IDV user.

Welcome.

I'm using IDV for visualization of ocean
model output that has been mapped to a
regular grid.  The points over land are set
to _FillValue=nf90_fill_value, but contours get
drawn with a max value on the range of
nf90_fill_value.

What does the attribute look like in ncdump?  Is it
    var:__FillValue = "nf90_fill_value" ;

or has the macro been expanded (as it should be).
It will only work if the value is numeric.

Does IDV recognize netCDF FillValues?

It should.  Can you provide me with a sample file?

Don
*************************************************************
Don Murray                               UCAR Unidata Program
dmurray@xxxxxxxxxxxxxxxx                        P.O. Box 3000
(303) 497-8628                              Boulder, CO 80307
http://www.unidata.ucar.edu/staff/donm
        "Time makes everyone interesting, even YOU!"
*************************************************************

• References:
  • IDV and netCDF FillValue
    • From: Brian Blanton