[Paraview] troubles with netCDF reader ?

[Aashish Chaudhary]

Dear Cynthia,

Is there any chance that you can send me a sample dataset?

- Aashish

On Fri, Jun 16, 2017 at 6:15 PM Hart, Cynthia Joyce - (cyndyb) <
cyndyb at email.arizona.edu> wrote:

> Folks –
>
>
>
> I am struggling with using the netCDF reader, with a bunch of timeseries
> of WRF data output (weather prediction modeling).  I am a visualizer, NOT a
> meteorologist, and so, my full understanding of the model’s output is shaky
> at best.  The researcher I am trying to assist is currently on vacation,
> and I’m trying to animate the output of his WRF model.
>
>
>
> So!  I have been viewing some of the output using the built in reader in
> Paraview (the ‘generic and cf’ reader) and it works for some variables, not
> for others.  I am using NCO tools to extract some of the variables of
> interest into their own CDF file, to try and isolate the problem Paraview
> has, reading some variables.. but that doesn’t help.  I am particularly
> trying to read a variable for radar data, “REFL_10CM”.  Here is the
> relevant bit of the file header from ncdump, below:
>
>
>
> netcdf ARAD4_test2 {
>
> dimensions:
>
>                 Time = UNLIMITED ; // (1 currently)
>
>                 south_north = 393 ;
>
>                 west_east = 639 ;
>
>                 bottom_top = 37 ;
>
> variables:
>
>                 float REFD_MAX(Time, south_north, west_east) ;
>
>                                 REFD_MAX:FieldType = 104 ;
>
>                                 REFD_MAX:MemoryOrder = "XY " ;
>
>                                 REFD_MAX:description = "MAX DERIVED RADAR
> REFL" ;
>
>                                 REFD_MAX:units = "dbZ" ;
>
>                                 REFD_MAX:stagger = "" ;
>
>                                 REFD_MAX:coordinates = "XLONG XLAT XTIME" ;
>
>                 float REFL_10CM(Time, bottom_top, south_north, west_east) ;
>
>                                 REFL_10CM:FieldType = 104 ;
>
>                                 REFL_10CM:MemoryOrder = "XYZ" ;
>
>                                 REFL_10CM:description = "Radar
> reflectivity (lamda = 10 cm)" ;
>
>                                 REFL_10CM:units = "dBZ" ;
>
>                                 REFL_10CM:stagger = "" ;
>
>                                 REFL_10CM:coordinates = "XLONG XLAT XTIME"
> ;
>
>                 float XLAT(Time, south_north, west_east) ;
>
>                                 XLAT:FieldType = 104 ;
>
>                                 XLAT:MemoryOrder = "XY " ;
>
>                                 XLAT:description = "LATITUDE, SOUTH IS
> NEGATIVE" ;
>
>                                 XLAT:units = "degree_north" ;
>
>                                 XLAT:stagger = "" ;
>
>                                 XLAT:coordinates = "XLONG XLAT" ;
>
>                 float XLONG(Time, south_north, west_east) ;
>
>                                 XLONG:FieldType = 104 ;
>
>                                 XLONG:MemoryOrder = "XY " ;
>
>                                 XLONG:description = "LONGITUDE, WEST IS
> NEGATIVE" ;
>
>                                 XLONG:units = "degree_east" ;
>
>                                 XLONG:stagger = "" ;
>
>                                 XLONG:coordinates = "XLONG XLAT" ;
>
>                 float XTIME(Time) ;
>
>                                 XTIME:FieldType = 104 ;
>
>                                 XTIME:MemoryOrder = "0  " ;
>
>                                 XTIME:description = "minutes since
> 2016-07-29 12:00:00" ;
>
>                                 XTIME:units = "minutes since 2016-07-29
> 12:00:00" ;
>
>                                 XTIME:stagger = "" ;
>
>
>
> Paraview complains that it cannot read a variable with more than three
> dimensions without time.  But there appears to ‘be’ time (I’m very unclear
> what “UNLIMITED” time , as seen in the header, refers to in this context).
> Is there any way I can work around this?  Most frustrating.   I can
> actually read this variable into QGIS, but I’d rather use the strengths of
> Paraview to visualize this data.
>
>
>
> Thanks in advance.
>
>
>
>
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